Reduced computation in joint detection

Details Reduced computation in joint detection Reduced computation in joint detection

2007-11-13

2007-11-13

Ghayour, Mohammed (Department: 2611)

Pulse or digital communications

Spread spectrum

Direct sequence

C375S267000, C375S347000

Reexamination Certificate

active

11010703

ABSTRACT:
A user equipment receives a plurality of transmitted data signals in a communication system. The transmitted data signals are received. A channel response is determined for each received data signal. A system response is determined based on in part the channel signals. The system response is expanded to be piecewise orthogonal. Data from the received data signals is retrieved based on in part the expanded system response.

REFERENCES:
patent: 4658225 (1987-04-01), Dukes et al.
patent: 5727032 (1998-03-01), Jamal et al.
patent: 5880644 (1999-03-01), Schmidt et al.
patent: 6175587 (2001-01-01), Madhow et al.
patent: 6304618 (2001-10-01), Hafeez et al.
patent: 6314147 (2001-11-01), Liang et al.
patent: 6339612 (2002-01-01), Stewart et al.
patent: 6442154 (2002-08-01), Bottomley
patent: 6442193 (2002-08-01), Hirsch
patent: 6477210 (2002-11-01), Chuang et al.
patent: 6512534 (2003-01-01), Koga
patent: 6594487 (2003-07-01), Nasshan et al.
patent: 6600776 (2003-07-01), Alamouti et al.
patent: 6603801 (2003-08-01), Andren et al.
patent: 6647077 (2003-11-01), Shan et al.
patent: 6697633 (2004-02-01), Dogan et al.
patent: 6775260 (2004-08-01), Dabak et al.
patent: 99/40698 (1999-08-01), None
patent: 99/59351 (1999-11-01), None
Karimi, H. R., et al “Personal Indoor and Mobile Radio Communications”, The Ninth IEEE International Symposium on Communications, Sep. 1998, vol. 3, pp. 1340-1345.
Yfoulis, C.A.; Muir, A.; Pettit, N.B.O.L.; Wellstead, P.E., “Stabilization of orthogonal piecewise linear systems using piecewise linear Lyapunov-like functions” IEEE, vol. 2, Dec. 1998 pp. 1476-1481.
Wu Bin, “Identification of nonlinear systems via piecewise general orthogonal polynomials operator” Decision and Control, 2001. Proceedings of the 40th IEEE Conference on, vol. 3, Dec. 2001 pp. 2538-2543.
Karimi, H.R. and Anderson, N.W., “A Novel and Efficient Solution to Blocked-Based Joint-Detection Using Approximate Cholesky Factorization”, Personal, Indoor and Mobile Radio Communications, The Ninth IEEE International Symposium on communications, Sep. 1998, vol. 3 pp. 1340-1345.
Anja Klein and Paul W. Baier, “Linear Unbiased Data Estimation in Mobile Radio Systems Applying CDMA”, IEEE Journal on Selected Areas in Communications, vol. 11, No. 7, Sep. 1993, pp. 1058-1065.
Lars K. Rasmussen, Teng J. Lim and Ana-Louise Johansson, “A Matrix-Algebraic Approach to Successive Interference Cancellation in CDMA”, IEEE Transactions on Communications, vol. 48, No. 1, Jan. 2000, pp. 145-151.
Anja Klein, Ghassan Kawas Kaleh and Paul W. Baier, “Zero Forcing and Minimum Mean-Square-Error Equalization for Multiuser Detection in Code-Division Multiple-Access Channels”, IEEE Transactions on Vehicular Technology, vol. 45, No. 2, May 1996, pp. 276-287.
H.R. Karimi and N.W. Anderson, “A Novel and Efficient Solution to Block-Based Joint-Detection Using Approximate Cholesky Factorization”, Ninth IEEE International Symposium, vol. 3, Sep. 8-11, 1998, pp. 1340-1345.
Pulin Patel and Jack Holtzman, “Analysis of a Simple Successive Interference Cancellation Scheme in a DS/CDMA System”, IEEE Journal on Selected Areas in Communications, vol. 12, No. 5, Jun. 1994, pp. 796-807.
Andrew L. C. Hui and Khaled Ben Letaief, “Successive Interference Cancellation for Multiuser Asynchronous DS/CDMA Detectors in Multipath Fading Links”, IEEE Transactions on Communications, vol. 46, No. 3, Mar. 1998, pp. 384-391.
Youngkwon Cho and Jae Hong Lee, “Analysis of an Adaptive SIC for Near-Far Resistant DS-CDMA”, IEEE Transactions on Communications, vol. 46, No. 11, Nov. 1998, pp. 1429-1432.
J. Malard et al., “Efficiency and Scalability of Two Parallel QR Factorization Algorithms”, Proceedings of the Scalable High-Performance Computing Conference (Cat. No. 94TH0637-9), Proceedings of IEEE Scalable High Performance Computing Conference, Knoxville, TN, USA, May 23-25, 1994, pp. 615-622.
Tik-Bin Oon, Raymond Steele and Ying Li, “Performance of an Adaptive Successive Serial-Parallel CDMA Cancellation Scheme in Flat Rayleigh Fading Channels”, IEEE Transactions on Vehicular Technology, vol. 49, No. 1, Jan. 2000, pp. 130-147.
“Channel Impulse Response Model”, UMTS 30.03 version 3.2.0, TR 101 112 version 3.2.0 (1998), pp. 42-43 and 65-66.
3rd Generation Partnership Project; Technical Specification Group Radio Access Networks; UTRA (UE) TDD; Radio Transmission and Reception 3G TS 25.102 version 3.3.0 Release 1999, p. 37.
3rd Generation Partnership Project; Technical Specification Group Radio Access Network; Physical Channels and Mapping of Transport Channels onto Physical Channels (TDD), 3G TS 25.221 version 3.2.0 (Mar. 2000), pp. 3-10.
Li et al., “QR Decomposition Based Blind Channel Identification and Equalization”, IEEE, Conference Record of the Thirty-second Asilomar Conference on Signals, Systems & Computers, vol. 2, Nov. 1998, pp. 1484-1488.
Turner et al., Implementation of a Conjugate Matched Filter Adaptive Receiver for DS-CDMA, IEEE, Conference Proceedings Singapore ICCS '94, vol. 2, Nov. 1994, pp. 369-373.

Affiliated with

Also associated with

Rating

Reduced computation in joint detection does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Reduced computation in joint detection, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Reduced computation in joint detection will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3848286