TW200623664A - Iterative fast fourier transform error correction - Google Patents

Iterative fast fourier transform error correction

Info

Publication number
TW200623664A
TW200623664A TW094111917A TW94111917A TW200623664A TW 200623664 A TW200623664 A TW 200623664A TW 094111917 A TW094111917 A TW 094111917A TW 94111917 A TW94111917 A TW 94111917A TW 200623664 A TW200623664 A TW 200623664A
Authority
TW
Taiwan
Prior art keywords
data
fourier transform
estimated
data signals
transmitted
Prior art date
Application number
TW094111917A
Other languages
Chinese (zh)
Other versions
TWI269540B (en
Inventor
Jung-Lin Pan
Ariela Zeira
Original Assignee
Interdigital Tech Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US10/004,370 external-priority patent/US7027489B2/en
Application filed by Interdigital Tech Corp filed Critical Interdigital Tech Corp
Publication of TW200623664A publication Critical patent/TW200623664A/en
Application granted granted Critical
Publication of TWI269540B publication Critical patent/TWI269540B/en

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  • Radio Relay Systems (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Data is to be estimated from a received plurality of data signals in a code division multiple access communication system. The data signals are transmitted in a shared spectrum at substantially a same time. A combined signal of the transmitted data signals are received over the shared spectrum and sampled. A channel response for the transmitted data signals is estimated. Data of the data signals is estimated using the samples and the estimated channel response. The data estimation uses a fourier transform based data estimating approach. An error in the data estimation introduced from a circulant approximation used in the fourier transform based approach is iteratively reduced.
TW94111917A 2001-11-01 2002-04-04 Iterative fast fourier transform error correction TWI269540B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US10/004,370 US7027489B2 (en) 2001-04-06 2001-11-01 Iterative fast fourier transform error correction

Publications (2)

Publication Number Publication Date
TW200623664A true TW200623664A (en) 2006-07-01
TWI269540B TWI269540B (en) 2006-12-21

Family

ID=38291587

Family Applications (3)

Application Number Title Priority Date Filing Date
TW095142889A TW200737758A (en) 2001-11-01 2002-04-04 Iterative fast fourier transform error correction
TW094134538A TW200637191A (en) 2001-11-01 2002-04-04 Iterative fast fourier transform error correction
TW94111917A TWI269540B (en) 2001-11-01 2002-04-04 Iterative fast fourier transform error correction

Family Applications Before (2)

Application Number Title Priority Date Filing Date
TW095142889A TW200737758A (en) 2001-11-01 2002-04-04 Iterative fast fourier transform error correction
TW094134538A TW200637191A (en) 2001-11-01 2002-04-04 Iterative fast fourier transform error correction

Country Status (1)

Country Link
TW (3) TW200737758A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8064550B2 (en) 2007-03-09 2011-11-22 Qualcomm, Incorporated Quadrature imbalance estimation using unbiased training sequences
US8428175B2 (en) 2007-03-09 2013-04-23 Qualcomm Incorporated Quadrature modulation rotating training sequence
US8290083B2 (en) 2007-03-09 2012-10-16 Qualcomm Incorporated Quadrature imbalance mitigation using unbiased training sequences

Also Published As

Publication number Publication date
TWI269540B (en) 2006-12-21
TW200637191A (en) 2006-10-16
TW200737758A (en) 2007-10-01

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Legal Events

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MM4A Annulment or lapse of patent due to non-payment of fees