Computational methods for use in a short-code...

Details Computational methods for use in a short-code... Computational methods for use in a short-code...

2007-01-16

2007-01-16

Ghebretinsae, Temesghen (Department: 2611)

Pulse or digital communications

Spread spectrum

Direct sequence

C375S143000

Reexamination Certificate

active

10098628

ABSTRACT:
The invention provides methods and apparatus for multiple user detection (MUD) processing that have application, for example, in improving the capacity CDMA and other wireless base stations. One aspect of the invention provides a multiprocessor, multiuser detection system for detecting user transmitted symbols in CDMA short-code spectrum waveforms. A first processing element generates a matrix (hereinafter, “gamma matrix”) that represents a correlation between a short-code associated with one user and those associated with one or more other users. A set of second processing elements generates, e.g., from the gamma matrix, a matrix (hereinafter, “R-matrix”) that represents cross-correlations among user waveforms based on their amplitudes and time lags. A third procesing element produces estimates of the user transmitted symbols as a function of the R-matrix.

REFERENCES:
patent: 5581632 (1996-12-01), Koljonen et al.
patent: 5644592 (1997-07-01), Divsalar et al.
patent: 5757791 (1998-05-01), Kanterakis et al.
patent: 5790534 (1998-08-01), Kokko et al.
patent: 5831984 (1998-11-01), Hottinen
patent: 5864549 (1999-01-01), Honkasalo et al.
patent: 5867478 (1999-02-01), Baum et al.
patent: 5870378 (1999-02-01), Huang et al.
patent: 5872776 (1999-02-01), Yang
patent: 5881056 (1999-03-01), Huang et al.
patent: 5933423 (1999-08-01), Laakso et al.
patent: 5936950 (1999-08-01), Hottinen
patent: 5943330 (1999-08-01), Hottinen
patent: 6005852 (1999-12-01), Kokko et al.
patent: 6011812 (2000-01-01), Laakso et al.
patent: 6018317 (2000-01-01), Dogan et al.
patent: 6047020 (2000-04-01), Hottinen
patent: 6064689 (2000-05-01), Vollmer
patent: 6067292 (2000-05-01), Huang et al.
patent: 6091788 (2000-07-01), Keskitalo et al.
patent: 6101176 (2000-08-01), Honkasalo et al.
patent: 6127973 (2000-10-01), Choi et al.
patent: 6128486 (2000-10-01), Keskitalo et al.
patent: 6154443 (2000-11-01), Huang et al.
patent: 6154507 (2000-11-01), Bottomley
patent: 6161209 (2000-12-01), Moher
patent: 6188718 (2001-02-01), Gitlin et al.
patent: 6192042 (2001-02-01), Seo
patent: 6212406 (2001-04-01), Keskitalo et al.
patent: 6215780 (2001-04-01), Peters et al.
patent: 6219341 (2001-04-01), Varanasi
patent: 6222833 (2001-04-01), Seo
patent: 6240099 (2001-05-01), Lim et al.
patent: 6370130 (2002-04-01), Zhou et al.
patent: 6546026 (2003-04-01), Goeddel
patent: 6570864 (2003-05-01), Kim et al.
patent: 6600729 (2003-07-01), Suzuki
patent: 6647059 (2003-11-01), Faruque
patent: 6754805 (2004-06-01), Juan
patent: 6782036 (2004-08-01), Dowling et al.
patent: 6801565 (2004-10-01), Bottomley et al.
patent: 6816541 (2004-11-01), Schmidl
patent: 6842480 (2005-01-01), Yang et al.
patent: 2002/0118728 (2002-09-01), Mohseni
patent: 2002/0122392 (2002-09-01), Elezabi
patent: 2003/0002569 (2003-01-01), Oates
patent: 2003/0058929 (2003-03-01), Cox et al.
patent: 2003/0076875 (2003-04-01), Oates
patent: 2003/0091058 (2003-05-01), Oates
patent: 2003/0091106 (2003-05-01), Oates
patent: 2003/0099224 (2003-05-01), Oates
patent: 2003/0099225 (2003-05-01), Oates
patent: 2003/0103558 (2003-06-01), Oates
patent: 2003/0128739 (2003-07-01), Oates
patent: 2003/0191887 (2003-10-01), Oates
patent: 2003/0198197 (2003-10-01), Oates
patent: 2003/0202559 (2003-10-01), Oates
patent: 2003/0202566 (2003-10-01), Oates
patent: 2003/0206577 (2003-11-01), Liberti, Jr. et al.
patent: 2003/0231702 (2003-12-01), Oates
patent: 2004/0213329 (2004-10-01), Takashi et al.
patent: 187 41 567 (1998-09-01), None
patent: 198 41 578 (2000-03-01), None
patent: 0 772 306 (1997-05-01), None
patent: 0 876 008 (1998-11-01), None
patent: 0 865 172 (1999-01-01), None
patent: 0 926 913 (1999-06-01), None
patent: 0 929 202 (1999-07-01), None
patent: 0 936 749 (1999-08-01), None
patent: 0 954 112 (1999-11-01), None
patent: 0 955 734 (1999-11-01), None
patent: 0 831 669 (1999-12-01), None
patent: 0 971 485 (2000-01-01), None
patent: 0 982875 (2000-01-01), None
patent: 0 978 951 (2000-02-01), None
patent: 0 978 962 (2000-02-01), None
patent: 0 993 127 (2000-04-01), None
patent: 0 839 412 (2000-08-01), None
patent: 1 035 681 (2000-09-01), None
patent: 1 047 218 (2000-10-01), None
patent: 1 063 780 (2000-12-01), None
patent: 1 065 799 (2001-01-01), None
patent: 1 069 722 (2001-01-01), None
patent: 1 075 158 (2001-02-01), None
patent: 1 077 551 (2001-02-01), None
patent: 1 085 688 (2001-03-01), None
patent: 1 093 235 (2001-04-01), None
patent: 1 091 506 (2001-05-01), None
patent: 1 124 346 (2001-08-01), None
patent: WO 95/12943 (1995-05-01), None
patent: WO 95/14336 (1995-05-01), None
patent: WO 95/28772 (1995-10-01), None
patent: WO 96/01544 (1996-01-01), None
patent: WO 96/11534 (1996-04-01), None
patent: WO 96/37969 (1996-11-01), None
patent: WO 96/37970 (1996-11-01), None
patent: WO 96/37973 (1996-11-01), None
patent: WO 96/37974 (1996-11-01), None
patent: WO 96/37975 (1996-11-01), None
patent: WO 96 37976 (1996-11-01), None
patent: WO 96/38015 (1996-11-01), None
patent: WO 97/02666 (1997-01-01), None
patent: WO 97/15985 (1997-05-01), None
patent: WO 97/21292 (1997-06-01), None
patent: WO 97/35384 (1997-09-01), None
patent: WO 97/36378 (1997-10-01), None
patent: WO 98/10542 (1998-03-01), None
patent: WO 98/17026 (1998-04-01), None
patent: WO 98/18210 (1998-04-01), None
patent: WO 98/24193 (1998-06-01), None
patent: WO 98/24199 (1998-06-01), None
patent: WO 98/38805 (1998-09-01), None
patent: WO 98/45967 (1998-10-01), None
patent: WO 98/47243 (1998-10-01), None
patent: WO 98/51111 (1998-11-01), None
patent: WO 98/59450 (1998-12-01), None
patent: WO 99/01946 (1999-01-01), None
patent: WO 99/33196 (1999-06-01), None
patent: WO 99/35706 (1999-07-01), None
patent: WO 99/41871 (1999-08-01), None
patent: WO 99/59266 (1999-11-01), None
patent: WO 99/66645 (1999-12-01), None
patent: WO 00/04652 (2000-01-01), None
patent: WO 00/18030 (2000-03-01), None
patent: WO 00/49720 (2000-08-01), None
patent: WO 00/51260 (2000-08-01), None
patent: WO 00/54427 (2000-08-01), None
patent: WO 00/52845 (2000-09-01), None
patent: WO 00/54418 (2000-09-01), None
patent: WO 00/72459 (2000-11-01), None
patent: WO 00/72464 (2000-11-01), None
patent: WO 00/72465 (2000-11-01), None
patent: WO 00/72496 (2000-11-01), None
patent: WO 00/79701 (2000-12-01), None
patent: WO 01/01605 (2001-01-01), None
patent: WO 01/03330 (2001-01-01), None
patent: WO 01/13530 (2001-02-01), None
patent: WO 01/22610 (2001-03-01), None
patent: WO 01/22617 (2001-03-01), None
patent: WO 01/28150 (2001-04-01), None
patent: WO 01/29983 (2001-04-01), None
patent: WO 01/29990 (2001-04-01), None
patent: WO 01/41387 (2001-06-01), None
patent: WO 01/43302 (2001-06-01), None
patent: WO 01/45287 (2001-06-01), None
patent: WO 01/46711 (2001-06-01), None
patent: WO 01/53999 (2001-07-01), None
patent: WO 01/54300 (2001-07-01), None
patent: WO 01/59258 (2001-08-01), None
patent: WO 01/59962 (2001-08-01), None
Verdú, “Multiuser Detection”, 1998, Cambridge, pp. 19-66; 154-213.

Affiliated with

Also associated with

Rating

Computational methods for use in a short-code... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Computational methods for use in a short-code..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Computational methods for use in a short-code... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3774895