1P/90/90-
`
`
`——+.
`=,
`PTO/SB/05 (11-00)
`=— e
`Approved for use through 10/31/2002 OMB 0651-0032
`fq
`>
`Please type a plus sign (4) inside this box
`=== pp
`US Patent and Trademark Office, US DEPARTMENT OF COMMERCE
`SSS
`== c Under the Paperwork Reduction Act of 1995, no persons are required to respond to a collection of information unless ft displays a valid OMB control number
`
`Gb lf —e|
`
`A
`
`UTILITY
`PATENT APPLICATION
`Adaptive Predistortion Device and Method Using Digital...
`TRANSMI TTAL
`(Only for new nonprovisional applications under 37 CFR 1.53(b))|Express Mail Labe! No.
`
`Attorney Docket No.
`
`|GO35-001
`
`{EL 844046025 US
`
`APPLICATION ELEMENTS
`
`See MPEPchapter 600 concerning utility patent application contents.
`Fee Transmittal Form (e.g., PTO/SB/17)
`
`7.
`
`pe. x
`
`<
`
`]
`
`
`
`Information Disclosure
`
`Oples 0
`
`
`
`
`
`
`. Assistant Commissioner for Patents
`ADDRESS TO:
`Box Patent Application
`Washington, DC 20231
`1.
`{(Subnutanoriginalandaduplicatefor feeprocessmg}
`LJ Computer Program (Appendie
`9
`So
`=>
`CD-ROMor CD-R in duplicate, large table or
`==
`8. Nucleotide and/or Amino Acid Sequence Submission FO
`Applicant claims small entity status.
`Nt
`’
`Q
`a —=
`See 37 CFR 1.27.
`(ifapplicable, all necessary)
`c=4
`[Total Pages
`Specification
`[| Computer Readable Form (CRF)
`no
`o
`(preterredarrangementsetforth below)
`a.
`P'
`1 5
`- Descriptive title of the invention
`b. Specification SequenceListing on:
`oS
`Ss
`- Cross Reference to Related Applications
`om,
`ng
`.
`.
`- Statement Regarding Fed sponsored R & D
`ea
`©
`i. L]
`CD-ROM or CD-R(2 copies); or
`- Reference to sequencelisting, a table,
`‘i
`S
`°
`im paper
`or a computer programlisting appendix
`.
`/
`.
`.
`=
`- Background of the Invention
`c. [| Statements verifying identity of above copies
`“ Briel DescriptionoftheDrawings (iffilec
`ACCOMPANYING_APPLICATION PARTS
`
`- Detailed Description 9.[| Assignment Papers (cover sheet & document(s))
`~ Claim(s)
`[_] 37 CFR 8.73{b) Statement
`Powerof
`- Abstract of the Disclosure
`10.
`(whenthere is an assignee)
`Attorney
`]
`_[ TotalSheets
`Drawing(s} (35 U.S.C. 113)
`11. [_] English Translation Document (iappreable) ‘ps
`4.
`
`
`
`
`5. Oath or Declaration 12.L| Statement (IDS)/PTO-1449[ TotalPages ] Citations
`a. LJ Newly executed (original or copy)
`13. [J Preliminary Amendment
`EC]
`Copyfrom a prior application (37 CFR 1.63 (d))
`[x] Return Receipt Posicard (MPEP 503)
`b.
`(for continuation/divisional with Box 18 completed)
`14,
`(Should be specifically itemized)
`i. [_] DELETION OF INVENTOR(S)
`15.[_| Settified Copy of Priority Document(s)
`Signed statement attached deleting inventor(s)
`(if foreign priority is claimed)
`named in the prior application, see 37 CFR
`16.[ | Request and Certification under 35 U.S.C. 122
`1 63(d)(2) and 1 33(b)
`(b){2)(B)(i). Applicant must attach form PTO/SB/35
`or its equivalen
`Application Data Sheet. See 37 CFR 1.76
`47.
`Other: Check...
`6. [_]
`18. Ifa CONTINUING APPLICATION, check appropriate box, and supply the requisite information below andin a preliminary amendment,
`or in an Application Data Sheet under 37 CFR 1.76:
`
`Continuation Cj
`Divistonal C]
`Continuation-in-part (CIP)
`of pnor appiication No f
`Group Art Unit
`Prior application information
`Examiner.
`For CONTINUATION OR DIVISIONAL APPS only: The entire disclosure of the prior application, from which an oath or declaration fs supplied under
`Box 5b, is considered a part of the disclosure of the accompanying continuation or divisional application and is hereby incorporated by reference.
`The incorporation can only be relied upon when a portion has been inadvertently omitted from the submitted application parts.
`19. CORRESPONDENCE ADDRESS
`
`
` CustomerNumberor Bar Code Label net ee or [ Correspondence address beiow
`
`
`
`Soba.
`
`Name
`
`Address pd
`
`Registration No. (Attorney/Agent)| 33 560 Lsonawe|Dae
`
`Name (Print/Type)
`
`Deepak Malhotra
`
`Burden Hour Statement This form ts estimated to take 0 2 hours to complete Time will vary depending upon the needs of the individual case Any comments on
`the amount of time you are required to complete this form should be sent to the Chief Information Officer, US Patent and Trademark Office, Washington, DC
`20231. DO NOT SEND FEES OR COMPLETED FORMS TO THIS ADDRESS SEND TO Assistant Commissioner for Patents, Box Patent Application,
`Washington, DC 20231
`
`EL844046025
`
`PETITIONERS EXHIBIT 1002
`Page 1 of 153
`
`PETITIONERS EXHIBIT 1002
`Page 1 of 153
`
`

`

`(12/99)
`PTOYSB/17
`Approved for use through 09/30/2000, OMB 0651-0032
`Patent and Trademark Office) US DEPARTMENT OF COMMERCE
`Under the Papenvork Reduction Act of 1995, no persons are required to respond to a collection of information unlessit displays a valid OMB control number
`
`
`June 8, 2001
`Filing Date
`First Named Inventor Emesto G. Jeckeln
`
`anti
`
`2.
`
`113
`
`415
`116
`117
`
`
`
`
`
`FEE TRANSMITTAL |—_cmpeeroe
`
`
`for FY 2000
`
`
`
`
`Patent fees are subject to annual revision
`
`
`
`
`Smati Entity payments must be supported by a small entity statement,
`otherwise large entity fees must be paid Sco Forms PTO/SB/09-12.
`Group / An unit
`See 37 CFR §§ 1.27 and 128.
`
`
`
`
`
`TOTAL AMOUNT OF PAYMENT|(3) 395.00 Attomey Docket No. |GO35-001
`
`METHOD OF PAYMENT(check one)
`FEE CALCULATION (continued)
`1 El The Commissioner is hereby authorized to charge
`3. ADDITIONAL FEES
`.
`indicated fees and credit any overpayments to
`Large EntityS$mail Entity
`Fee
`Fee Fee
`ee
`ul
`ccoun
`fem [33.0025id|Sa Sescsums-nnnnese
`Number 23-0925 Surcharge-late filing fee or oath105 130 205 65
`
`
`
`
`
`Surcharge - late provisional filing fee or
`Deposit
`127
`50
`227
`26
`cover sheet
`Account|Wells, St. John etal.
`139 130©Non-English specrfication1439
`
`
`OnaarCENS8116 and pegured
`447
`447 2520
`Forfiling a request for reexamination
`-
`112
`412 920° Requesting publication of SIR prior to
`Payment Enclosed:
`Examineraction
`Mone’
`113 1,840* Requesting publication of SIR after
`Check
`Order.
`Examiner action
`oO Other
`Extension for reply within first month
`Extension for reply within second month
`FEE CALCULATION
`1. BASIC FILING FEE
`Extension for reply withm third month
`Large Entity Small Entity
`Fee
`Fee
`Fee
`Fee
`Code (S$)
`Code ($)
`701
`690
`201
`345 Utity filing fee
`106
`310
`206 155
`Designfiling fee
`107 480
`207 240
`Plantfiling fee
`108
`690
`208 345
`Reissuefiling fee
`114
`150
`214
`75
`Provisionalfiling fee
`
`
`
`55
`215
`190
`216
`4
`435
`217
`Extension for reply within fourth month
`218 680
`118
`Extension for reply within fifth manth
`228 925
`4128
`Notice of Appeal
`219 150
`119
`Filing a brief in support of an appeal
`229 150
`420
`Request for oral hearing
`221
`130
`TT 121
`Petition to institute a public use proceeding
`138 1,519
`rd 138
`Petition to revive - unavoidable
`240
`55
`140
`
`SUBTOTAL(1)|($) 355.00 144 241 605 Petition to revive - unintentional
`
`
`
`2. EXTRA CLAIM FEES
`142
`242
`605
`Utility issue fee (or reissue)
`Fee from
`Extra Claims_below Fee Paid} |“3 243 215 Designissue fee
`
`
`
`
`144
`244 290
`Plantissue fee
`gr"
`x
`4o__]
`122
`422
`130
`Petitions to the Commissioner
`[Independent fq -9t -L__] x
`4 40 ]
`Multiple Dependent
`123
`123
`50
`Petitions related to provisional applications
`Submission of Information Disclosure Stmt
`*tor number previously paid,
`126
`126
`Large Entity Small Entity
`Fee
`Fee
`Fee
`Fee
`Code (§)
`Code (8)
`103
`18
`203
`9
`102
`78
`202
`39
`104 260
`204
`109
`78
`209
`
`Fee Description
`
`|
`Fee Paid
`355.00
`
`if greater, For Reissues, see belowf,
`
`Fee Description
`Claims in excess of 20
`Independent claimsin excess of 3
`Multiple dependentclaim, if not paid
`** Reissue independent claims
`ever original patent
`“™Reissue claims in excess of 20
`and over original patent
`
`39
`
`410
`
`#18
`
`#210
`
`9
`
`581
`146
`149
`
`40
`690
`690
`
`581
`246
`249
`
`Other fee (specify)
`
`40
`345
`S45
`
`Recording each patent assignment per
`property {times number of properties)
`Filing a submission after fal reyection
`(37 CFR § 1 129(2))
`Ff
`h
`additional
`tion
`to
`bi
`°
`examined (37 cen §1123(0)),
`
`
`Other fee (specify}
`
`
`
`(5) 0.00
`SUBTOTAL(3)
`SUBMITTED BY
`Complete (if applicable:
`
`
`Deepak Malhotra fence,|33,560 509-624-4276
`
`pee|og pe [Jie 20)
`WARNING:
`
`SUBTOTAL(2)
`
`|($)
`
`40.001] Reduced by Basic Filing Fee Paid
`
`Information on this form may become public. Credit card information should not be
`included on this form. Provide credit card information and authorization on PTO-2038.
`Burden Hour Statement. This form 1s eslmated to také 02 hours to complete Time will vary depending upon the needsof the individual case Any comments on
`the amountof time you are required to complete this form should be sent to the Chief Information Officer, Patent and Trademark Office, Wastington, DC 20231
`DO NOT SEND FEES OR COMPLETED FORMS TO THIS ADDRESS
`SEND TO. Assistant Commissionerfor Patents, Washington, DC 20231
`FL844046025
`
`PETITIONERS EXHIBIT 1002
`Page 2 of 153
`
`PETITIONERS EXHIBIT 1002
`Page 2 of 153
`
`

`

`06 —1{ —©1
`
`*
`
`]
`
`]
`]
`
`Information Disclosure
`
`oples Oo}
`
`1h/90/90.-
`
`
`
`
`®
`
`
`
`
`
`
`=
`= S
`PTO/SB/05 (11-00)
`——
`.
`_
`Approved for use through 10/31/2002 OMB 0651-0032
`ES
`P
`SS
`US Patent and Trademark Office, US DEPARTMENT OF COMMERCE
`ease tye
`‘gn (+)
`inst
`awe 1
`PI
`type a
`plus sign
`(+)
`inside: this box —>
`
`— c Under ihe Paperwork Reduction Act of 1995, no persons are required to respond to a collection of information unless ft displays a valid OMB control number
`
`
`
`UTILITY
`=
`Attorney Docket No.
`|GO35-001
`
`PATENT APPLICATION
`First Inventor
`=
`Emmesto G. Jeckeln
`
`
`TRANSMITTAL
`Adaptive Predistortion Device and Method Using Digital...
`
`
`{EL 844046025 US
`Express Mail Label No.
`(Only for new nonprovisional applications under 37 CFR 1.53(b))
`
`
`Assistant Commissioner for Patents
`
`
`
`BoxPatent Application
`APPLICATION ELEMENTS
`ADDRESS TO:
`
`Washington, DC 20231
`See MPEP chapter 600 concerningutility patent application contents.
`
`
`1.
`(Submutanoriginalandaduplicateforfeeprocessing}
`L] Computer Program Appandbs
`g
`Fee Transmittal Form (e.g., PTO/SB/17}
`CD-ROMor CD-R in duplicate, large table or
`7.
`=>
`5
`==
`A.
`Applicant claims small entity status.
`8. Nucleotide and/or Amino Acid Sequence Submission
`oe
`See 37 CFR 1.27.
`(ifapplicable, all necessary)
`Specification
`[Total Pages
`= a
`<
`(preferredarrangementsetforthbelow)
`a. LJ Computer Readable Form (CRF)
`a =
`- Descriptive title of the invention
`2 zs
`b. Specification SequenceListing on:
`- Cross Reference to Related Applications
`.
`on ~~
`.
`- Statement Regarding Fed sponsored R & D
`I CL
`CD-ROMor CD-R(2 copies}; or Ss
`ies)
`- Reference to sequencelisting, a table,
`ii Cl
`paper
`S
`°
`or a computer program listing appendix
`,
`oe.
`.
`un
`- Background of the Invention
`c. [| Statements verifying identity of above copies
`
`
`
`
` APPLICATIONeo beanie[ACCOMPANYINGPARTS|- Brief Description of the Drawings(iffiled) ACCOMPANYING APPLICATION PARTS
`
`- Detailed Description Q.[| Assignment Papers (cover sheet & document(s))
`~ Clairn(s)
`Cc) GFR 3.73(b) Statement
`Powerof
`- Abstractof the Disclosure
`10.
`(whenthereis an assignee)
`Attorney
`[ TotalSheets
`Drawing(s} (35 U.S.C. 113)
`11. [J English Translation Document (apptean’) eps
`4.
`[ TotalPages
`5. Oath or Declaration
`12. LJ Statement (IDSVPTO-1449
`Citations
`a. LC] Newly executed (original or copy)
`13. [J Preliminary Amendment
`[| Copy from a prior application (37 CFR 1.63 (d))
`[x] Return Receipt Postcard (MPEP 503)
`b.
`(for continuation/divisional with Box 18 completed)
`14.
`(Should be specifically itemized)
`i {_] DELETION OF INVENTOR(S)
`15.[_] Settiied Copyof Priority Document(s}
`Signed statement attached deleting inventor(s)
`(if foreign priority is claimed)
`named in the prior apphcation, see 37 CFR 16.[_|Request and Certification under 35 U.S.C. 122
`
`1 63(d)(2) and 1 33(b)
`(b){2)(B)(i). Applicant must attach form PTO/SB/35
`or its equivalen
`Application Data Sheet. See 37 CFR 1.76
`6. LJ
`17.
`Other: Checkveeeueeeceeeeaeer aeee teetereanees
`:
`
`If a CONTINUING APPLICATION, check appropriate box, and supply the requisite information below andin a preliminary amendment,
`18.
`or in an Application Data Sheet under 37 CFR 1.76:
`f
`of pror appiication No
`| Continuation C]
`Bivistonal C]
`Continuaton-in-part (CIP)
`
`Group Art Unit
`Prior application information
`Examiner
`
`
`For CONTINUATION OR DIVISIONAL APPS only: The entire disclosure of the prior application, from which an oath or declaration is supplied under
`
`
`Box 5b, is considered a part of the disclosure of the accompanying continuation or divisional application and is hereby incorporated by reference.
`
`
`
`The incorporation can only be relied upan when a portion has been inadvertently omitted from the submitted application parts.
`19. CORRESPONDENCE ADDRESS
`
`
`
`
`Customer Numberor Bar Cade Label
`or [] Correspondence address below
`
`
`Name |
`
`
`
`
`
`
`
`
`
`
`
`
`Registration No. (Attorney/Agent)| 33 560
`Deepak Malhotra
`Name (Print/Type)
`
`
`o &/2are‘ y
`
`
`WMALoaie[rune Sor
`
`Address
`
`Telephone
`
`
`
`Zip Code
`
`Fax
`
`Burden Hour Statement This form is estimated to take 0 2 hours to complete Time wil vary depending upon the needsof the individual case Any comments on
`the amountof time you are required to complete this form should be sent fo the Chief Information Officer, US Patent and Trademark Office, Washington, DC
`20231. DO NOT SEND FEES OR COMPLETED FORMS TO THIS ADDRESS SEND TO Assistant Commissioner for Patents, Box Patent Application,
`
`washing, 90 2025
`
`EL844046025
`
`PETITIONERS EXHIBIT 1002
`Page 3 of 153
`
`PETITIONERS EXHIBIT 1002
`Page 3 of 153
`
`

`

`(12/99)
`PTOYSB/17
`Approved for use through 09/30/2000, OMB 0651-0032
`Patent and Trademark Office) US DEPARTMENT OF COMMERCE
`Under the Papenvork Reduction Act of 1995, no persons are required to respond to a collection of information unlessit displays a valid OMB control number
`
`
`June 8, 2001
`Filing Date
`First Named Inventor Emesto G. Jeckeln
`
`anti
`
`2.
`
`113
`
`415
`116
`117
`
`
`
`
`
`FEE TRANSMITTAL |—_cmpeeroe
`
`
`for FY 2000
`
`
`
`
`Patent fees are subject to annual revision
`
`
`
`
`Smati Entity payments must be supported by a small entity statement,
`otherwise large entity fees must be paid Sco Forms PTO/SB/09-12.
`Group / An unit
`See 37 CFR §§ 1.27 and 128.
`
`
`
`
`
`TOTAL AMOUNT OF PAYMENT|(3) 395.00 Attomey Docket No. |GO35-001
`
`METHOD OF PAYMENT(check one)
`FEE CALCULATION (continued)
`1 El The Commissioner is hereby authorized to charge
`3. ADDITIONAL FEES
`.
`indicated fees and credit any overpayments to
`Large EntityS$mail Entity
`Fee
`Fee Fee
`ee
`ul
`ccoun
`fem [33.0025id|Sa Sescsums-nnnnese
`Number 23-0925 Surcharge-late filing fee or oath105 130 205 65
`
`
`
`
`
`Surcharge - late provisional filing fee or
`Deposit
`127
`50
`227
`26
`cover sheet
`Account|Wells, St. John etal.
`139 130©Non-English specrfication1439
`
`
`OnaarCENS8116 and pegured
`447
`447 2520
`Forfiling a request for reexamination
`-
`112
`412 920° Requesting publication of SIR prior to
`Payment Enclosed:
`Examineraction
`Mone’
`113 1,840* Requesting publication of SIR after
`Check
`Order.
`Examiner action
`oO Other
`Extension for reply within first month
`Extension for reply within second month
`FEE CALCULATION
`1. BASIC FILING FEE
`Extension for reply withm third month
`Large Entity Small Entity
`Fee
`Fee
`Fee
`Fee
`Code (S$)
`Code ($)
`701
`690
`201
`345 Utity filing fee
`106
`310
`206 155
`Designfiling fee
`107 480
`207 240
`Plantfiling fee
`108
`690
`208 345
`Reissuefiling fee
`114
`150
`214
`75
`Provisionalfiling fee
`
`
`
`55
`215
`190
`216
`4
`435
`217
`Extension for reply within fourth month
`218 680
`118
`Extension for reply within fifth manth
`228 925
`4128
`Notice of Appeal
`219 150
`119
`Filing a brief in support of an appeal
`229 150
`420
`Request for oral hearing
`221
`130
`TT 121
`Petition to institute a public use proceeding
`138 1,519
`rd 138
`Petition to revive - unavoidable
`240
`55
`140
`
`SUBTOTAL(1)|($) 355.00 144 241 605 Petition to revive - unintentional
`
`
`
`2. EXTRA CLAIM FEES
`142
`242
`605
`Utility issue fee (or reissue)
`Fee from
`Extra Claims_below Fee Paid} |“3 243 215 Designissue fee
`
`
`
`
`144
`244 290
`Plantissue fee
`gr"
`x
`4o__]
`122
`422
`130
`Petitions to the Commissioner
`[Independent fq -9t -L__] x
`4 40 ]
`Multiple Dependent
`123
`123
`50
`Petitions related to provisional applications
`Submission of Information Disclosure Stmt
`*tor number previously paid,
`126
`126
`Large Entity Small Entity
`Fee
`Fee
`Fee
`Fee
`Code (§)
`Code (8)
`103
`18
`203
`9
`102
`78
`202
`39
`104 260
`204
`109
`78
`209
`
`Fee Description
`
`|
`Fee Paid
`355.00
`
`if greater, For Reissues, see belowf,
`
`Fee Description
`Claims in excess of 20
`Independent claimsin excess of 3
`Multiple dependentclaim, if not paid
`** Reissue independent claims
`ever original patent
`“™Reissue claims in excess of 20
`and over original patent
`
`39
`
`410
`
`#18
`
`#210
`
`9
`
`581
`146
`149
`
`40
`690
`690
`
`581
`246
`249
`
`Other fee (specify)
`
`40
`345
`S45
`
`Recording each patent assignment per
`property {times number of properties)
`Filing a submission after fal reyection
`(37 CFR § 1 129(2))
`Ff
`h
`additional
`tion
`to
`bi
`°
`examined (37 cen §1123(0)),
`
`
`Other fee (specify}
`
`
`
`(5) 0.00
`SUBTOTAL(3)
`SUBMITTED BY
`Complete (if applicable:
`
`
`Deepak Malhotra fence,|33,560 509-624-4276
`
`pee|og pe [Jie 20)
`WARNING:
`
`SUBTOTAL(2)
`
`|($)
`
`40.001] Reduced by Basic Filing Fee Paid
`
`Information on this form may become public. Credit card information should not be
`included on this form. Provide credit card information and authorization on PTO-2038.
`Burden Hour Statement. This form 1s eslmated to také 02 hours to complete Time will vary depending upon the needsof the individual case Any comments on
`the amountof time you are required to complete this form should be sent to the Chief Information Officer, Patent and Trademark Office, Wastington, DC 20231
`DO NOT SEND FEES OR COMPLETED FORMS TO THIS ADDRESS
`SEND TO. Assistant Commissionerfor Patents, Washington, DC 20231
`FL844046025
`
`PETITIONERS EXHIBIT 1002
`Page 4 of 153
`
`PETITIONERS EXHIBIT 1002
`Page 4 of 153
`
`

`

`
`
`TITLE OF THE INVENTION
`
`[0001]
`
`ADAPTIVE PREDISTORTION DEVICE AND METHOD
`
`USING DIGITAL RECEIVER
`
`FIELD OF THE INVENTION
`
`The present invention relates to predistorting devices. More
`[0002]
`specifically, the present invention is concerned with a predistorting device and
`to a method of predistortion using digital receivers.
`
`BACKGROUND OF THE INVENTION
`
`The demand for developing ultra-linear microwave transmitter,
`[0003]
`supporting high crest factor signals,
`increases rapidly,
`for example by the
`definition of the third generation (hereinafter "3G") of mobile radio standards.
`
`ratio (hereinafter
`The demanding adjacent channel power
`[0004]
`"ACPR'") requirements of these systems, i.e., W-CDMA or cdma2000, present
`a critical issue for transmitter designers if both ultra-linearity and high power
`
`In fact, the degradation oflinearity becomessignificant
`efficiency must be met.
`as the power amplifier (hereinafter "PA") operates close to saturation where
`both high power efficiency and high output power emission are achieved.
`Therefore, for different stimulus levels driving the amplifiers and for a given
`
`ACPR specification, the trade-off between powerefficiency and linearity impose
`an operating point with poor power efficiency.
`In this case,
`linearization
`techniques become the only possible way to recuperate the linearity and to
`
`allow optimal trade-off.
`
`Various linearization methods have been reported and are
`[0005]
`derived, by any measure, from three main types named:
`
`FL844046025
`
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`
`
`
`
`
`Feed-forward (R. Meyer, R. Eschenbach and W. Edgerley, Jr.
`[0006]
`"A wide-Band Feedforward Amplifier", IEEE J. of Solid-State Circuits, vol. sc-9,
`
`an open loop
`includes
`pp. 442-428, December 1974), which
`6,
`no.
`configuration, can handle a multicarrier signal but can not easily be controlled
`against the effects of drift. Moreover, their low power efficiency makeit suitable
`in base station only. A good analysis of adaptation behavior has been
`presented in J. Cavers, "Adaptation Behavior of a Feedforward Amplifier
`Linearizer", IEEE Transactions on Vehicular Technology, vol. 44, no. 1, pp. 31-
`
`40, February 1995;
`
`[0007]
`Feedback (A. Bateman & D. Haines,
`"Direct Conversion
`Transceiver Design for Compact Low-Cost Portable Mobile Radio Terminals"
`IEEE Conf. pp. 57-58, 1989), which presents an excellent reduction of out-of-
`
`band emissions,is relatively easy to implement. However, stability requirement
`
`limits its bandwidth becauseofits critical dependence on the loop delay; and
`
`"Novel
`Imai, T. Nojima and T. Murase,
`Predistortion (N.
`[0008]
`Linearizer Using Balanced Circulators and Its Application to Multilevel Digital
`Radio Systems",
`IEEE Transactions on Microwave Theory and Techniques,
`vol. 37, no. 8, pp. 1237-1243, August 1989),
`this technique has historically
`
`been the most common method in analog implementation. This method uses a
`
`nonlinear element which precedes the device to be compensated,
`its gain-
`expansion characteristic cancels the gain compression of the amplifier. Like
`feed-forward, it has an open loop configuration and therefore is very sensitive
`
`to drifts.
`
`The predistortion technique has historically been the most
`[0009]
`common method in analog implementation. Now, this technique is well suited
`to digital implementation, for example by integrating a DSP chip to handle high-
`speed arithmetic.
`In this way,
`important experimental
`results have been
`presented in the following papers, demonstrating the capability in reducing the
`
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`spectral spreading and how adaptive correction for drift, aging and temperature
`
`variation can be achieved using DSP circuits.
`
`[0010]
`Mobil",
`
`"Linear Amplification Technique for Digital
`[1] Y. Nagata,
`in Proc. IEEE Veh. Technol. conf., San Francisco, CA, 1989, pp. 159-
`
`164.
`
`“Adaptive
`[2] M. Faulkner, T. Mattsson and W. Yates,
`[0011]
`Linearization Using Predistortion” in Proc. 40th IEEE Veh. Technol. Conf. 1990.
`
`pp. 35-40.
`
`"Experimental
`and Willem G. Durtled,
`[3] A.S. Wright
`[0012]
`Performance of an Adaptive Digital Linearized Power Amplifiers",
`IEEE
`Transactions on Vehicular Technology, vol. 41, no 4, pp. 395-400, November
`
`1992.
`
`[0013]
`[4] J. Cavers,
`"Amplifier Linearization Using
`a_ Digital
`predistorter with Fast Adaptation and Low Memory Requirement’,
`IEEE
`Transaction on Vehicular Technology, vol. 39, no 4, pp. 374-382, November
`1990.
`
`[5] E.G. Jeckeln, F.M. Ghannouchi and Mohamad Sawan,
`[0014]
`"Adaptive Digital Predistorter for Power Amplifiers with Real Time Modeling of
`Memoryless Complex Gains",
`IEEE MTT-S 1996 International Microwave
`
`Symposium, San Francisco, CA, June 1996.
`
`Although the above-mentioned technique is powerful duetoits
`[0015]
`digital operating principles, it presents certain inflexibility in the sense that; it is
`suitable only when the baseband signal
`is acceded directly before the up-
`
`conversion.
`
`In most cases, linearizer designers have no access to baseband
`
`they found themselves confined to use traditional Radio-
`signal; hence,
`frequency (hereinafter “RF”) analog predistortion techniques. In this case, it is
`
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`more difficult
`
`to meet severe ACPR for a high crest
`
`factor's
`
`signals
`
`specifications while operating not in far back-off regions.
`
`The RF-based predistorter proposed by Stapelton et al. (S.P.
`[0016]
`Stapelton and F.C. Cotescu, "An Adaptative Predistorter for a Power Amplifier
`Based on Adjacent Channel Emissions",
`IEEE Transactions of Vehicular
`Technology, vol. 41, no 1, pp 49-56, February 92) offers an interesting
`alternative. It includes a complex gain tuning circuit that controls the amplitude
`
`and phase of the RF signal. The baseband environmentis confined to optimize
`
`two nonlinear work functions by monitoring the ACP-minimization (Adjacent
`
`Channel Power) measured by a powerdetector. Drawbacks of this method are
`its
`slow convergence toward the minimum and its
`sensitivity to the
`
`measurement noise.
`
`OBJECTS OF THE INVENTION
`
`[0017]
`
`An object of the present invention is therefore to provide an
`
`improved predistortion device and method.
`
`SUMMARYOF THE INVENTION
`
`in accordance with the present invention,
`More specifically,
`[0018]
`there is provided an adaptive method for precistorting a signal
`to be
`transmitted, supplied by a signal source to an input of a power amplifier having
`an output for delivering an amplified output signal, said method comprising the
`
`steps of:
`
`predistorting the signal
`
`to be transmitted by means of
`
`predistortion amplitude and phase look-up tables interposed between the signal
`
`source and the input of the power amplifier;
`
`producing, via a first digital receiver, a first feedback signalin
`
`responseto the predistorted signal;
`
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`
`producing, via a second digital receiver, a second feedback
`
`signal in response to the amplified output signal from the power amplifier;
`modeling the power amplifier in response to the first and
`
`second feedbacksignals; and
`updating the predistortion amplitude and phase look-up table
`meansin responseto said modeling of the power amplifier.
`
`According to a second aspect of the presentinvention, thereis
`[0019]
`provided an adaptive device for predistorting a signal
`to be transmitted,
`supplied by a signal source to an input of a power amplifier having an output for
`delivering an amplified output signal, said adaptive device comprising:
`
`a complex gain adjuster interposed betweenthe signal source
`
`and the input of the power amplifier;
`including predistortion amplitude and
`distorting generator
`phase look-up table; said distorting generator being so configured as to control
`said complex gain adjuster to predistort
`the signal
`to be transmitted in
`
`amplitude and in phase;
`a first digital
`
`receiver producing a first feedback signal
`
`in
`
`responseto the predistorted signal from said complex gain adjuster;
`a seconddigital receiver producing a second feedbacksignal
`in responseto the amplified output signal from the power amplifier;
`a contro! module receiving said first and second feedback
`signals from said first and second digital receivers; said control module being ~
`so configured as to model the power amplifier in response to the first and
`second feedback signals and to update said amplitude and phase look-up table
`of said distortion generator in responseto said modeling of the power amplifier.
`
`According to a third aspect of the present invention, there is
`[0020]
`provided a transmitter system for amplifying and up-converting a baseband
`signal from a signal source; said transmitter system comprising:
`
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`
`a power amplifier having a signal input and an amplified signal
`
`output;
`
`a complex gain adjuster interposed between the signal source
`
`and said signal input;
`
`distorting generator
`including predistortion amplitude and
`phase look-up table; said distorting generator being so configured as to control
`said complex gain adjuster to predistort the baseband signal in amplitude and
`
`in phase;
`
`an up-converter receiving said predistorted baseband signal;
`
`said up-converter being so configured as to supply an up-converted
`
`predistorted signal to said signal input of said power amplifier;
`a first digital
`receiver producing a first feedback signal
`
`in
`
`responseto the predistorted baseband signal;
`
`a second digital receiver producing a second feedback signal
`
`in response to the up-converted amplified output signal from said amplified
`
`signal output;
`
`a control module receiving said first and second feedback
`signals from said first and second digital receivers; said control module being
`so configured as to model said power amplifier in response to the first and
`
`second feedback signals and to update said amplitude and phase look-up table
`
`of said distorting generator in response to said modeling of said power
`
`amplifier.
`
`According to a final aspect of the present invention, there is
`[0021]
`provided an adaptive device for predistorting a signal
`to be transmitted,
`supplied by a signal source to an input of a power amplifier having an output for
`delivering an amplified output signal, comprising:
`predistorter means comprising predistortion amplitude and
`
`phase look-up table meansinterposed between the signal source and the input
`
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`of the power amplifier for amplitude and phase predistorting the signal to be
`
`transmitted;
`
`digital receiver means for producing a first feedback signalin
`responseto the predistorted signal from the predistorter means;
`digital receiver means for producing a second feedbacksignal
`in response to the amplified output signal from the power amplifier;
`meansfor modeling the power amplifier in responseto thefirst
`
`and second feedback signals; and
`
`means for updating the predistortion amplitude and phase
`
`look-up table meansin responseto said modeling of the power amplifier.
`
`the present
`Other objects, advantages and features of
`[0022}
`invention will become more apparent upon reading of
`the following non-
`restrictive description of preferred embodiments thereof, given by way of
`
`example only with reference to the accompanying drawings.
`
`BRIEF DESCRIPTION OF THE DRAWINGS
`
`In the appended drawings:
`
`is a general block diagram of a predistortion device
`Figure 1
`[0023]
`according to a first embodimentof the present inveniton;
`
`Figure 2 is a block diagram illustrating the algorithm the PA
`[0024]
`characterization made via the digital receivers of the predistortion device of
`
`Figure 1;
`
`[0025]
`
`Figure 3 is a block diagram of the distorting generator of the
`
`predistortion device of Figure 1;
`
`[0026]
`
`Figure 4A is a block diagram illustrating the algorithm to
`
`process the ACPR for the PA output signal;
`
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`Figure 4B is a block diagram similar to Figure 4Aillustrating
`[0027]
`an alternate algorithm to process the distortion evaluation for the PA output
`
`signal, by using a complex envelopecrosscorrelation function;
`
`[0028]
`
`signals;
`
`[0029]
`
`Figure 5 is a graphic illustrating CCDF plots of different CDMA
`
`Figure 6 is a graphic illustrating the 30kHz normalized
`
`requirementfor 44 dBm PA;
`
`Figure 7 is a graphicillustrating a simulation of ACPR vs OBO
`[0030]
`of the ideallimiter under the stimulus of nine channels CDMAstandard signal;
`
`Figure 8 is a graphicillustrating a simulation of ACPR vs OBO
`[0031]
`of a 40 dBm PA underthe stimulus of a W-CDMAstandard signal;
`
`Figure 9 is a graphicillustrating a simulation of ACPR vs OBO
`[0032]
`of a linearized 44dBm PA under the stimulus of nine channels CDMA standard
`
`signal;
`
`Figure 10 is a graphicillustrating a simulation of ACPR vs
`[0033]
`OBO ofthe ideallimiter under the stimulus of a cdma2000 DSsignal;
`
`Figure 11 is a graphic illustrating a simulation of ACPR vs
`[0034]
`OBO of both the ideal limiter and a 40 dBm PA underthe stimulus of a W-
`
`CDMAstandard signal;
`
`Figure 12 is a graphic illustrating measurements of ACPR vs
`[0035]
`OBO of both the ideal
`limiter and a 40 dBm PA under the stimulus of a W-
`
`CDMAsignal;
`
`Figure 13 is a general block diagram of a predistortion device
`[0036]
`according to a second embodimentof the present invention; and
`
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`Figure 14 is a general block diagram of an amplification
`[0037]
`system integrating a predistorting device according to the present invention.
`
`DESCRIPTION OF THE PREFERRED EMBODIMENT
`
`Generally stated, the present invention relates to an adaptive
`[0038]
`baseband/RF predistorting device, which
`advantageously integrates
`the
`conceptof digital receiver technologyinto thelinearization techniques, and to a
`method therefor. By taking advantage of the digital receiver technology to
`digitally translate signal from RF to baseband with very high accuracy, the
`predistorting device of
`the present
`invention performs the instantaneous
`characterization of
`the memoryless nonlinearity in baseband to supply a
`correlated predistortion function. The distortion is generated in baseband by
`addressing the extracted predistortion function and then,
`the distortion is
`embedded into the RF signal by dynamically adjusting the amplitude and the
`
`phase of the carrier.
`
`the appended drawings, a
`of
`Turning now to Figure 1
`[0039]
`predistorting device 20 according to a first embodiment of the present invention
`will be described. The predistorting device 20 has two inputs 22 and 24 and an
`output 26. The first input 22 is connected to the low level RF output 28 of a low
`level RF signal source 30 to thereby receive an input RF signal therefrom; and
`the second input 24 is connected to the RF output 32 of a PA 34. The RF
`output 32 delivering an ampli