Pulse or digital communications – Spread spectrum – Direct sequence
Reexamination Certificate
2007-10-09
2007-10-09
Bocure, Tesfaldet (Department: 2611)
Pulse or digital communications
Spread spectrum
Direct sequence
C370S442000
Reexamination Certificate
active
11491463
ABSTRACT:
A single transmitter transmits K communication bursts in a shared spectrum in a time slot of a time division duplex communication system. Each burst has an associated midamble sequence, a receiver knowing the midamble sequences of the K bursts. The receiver receives a vector corresponding to the transmitted midamble sequences of the K communication bursts. A matrix having K right circulant matrix blocks is constructed based in part on the known K midamble sequences. The wireless channel between the transmitter and receiver is estimated based on in part the K block matrix and the received vector.
REFERENCES:
patent: 5933768 (1999-08-01), Skõld et al.
patent: 5970060 (1999-10-01), Baier et al.
patent: 1163024 (1997-10-01), None
patent: 0480507 (1992-04-01), None
patent: 99/59351 (1999-11-01), None
patent: 01/52489 (2001-07-01), None
Steiner et al., “Optimum and Suboptimum Channel Estimation for the Uplink of CDMA Mobile Radio Systems with Joint Detection”, European Transactions on Telecommunications and Related Technologies, IT, AEI, Milano, vol. 5, No. 1, 1994; pp. 39-50.
Liu, “Performance of Joint Data and Channel Estimation Using Tap variable Step-Size (TVSS) LMS for Multipath Fast Fading Channel”, Proceedings of the Global Telecommunications Conference (GLOBECOM), Nov. 28, 1994, pp. 973-978.
Klein et al., “Linear Unbiased Data Estimation in Mobile Radio Systems Applying to CDMA”, IEEE Journal on Selected Areas in Communications, vol. 11, No. 7, Sep. 1993, pp. 1058-1065.
Rasmussen et al., “A Matrix-Algebraic Approach to Successive Interference Cancellation in CDMA”, IEEE Transactions on Communications, vol. 48, No. 1, Jan. 2000, pp. 145-151.
Klein et al., “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.
Karimi et al., “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.
Patel et al., “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.
Hui et al., “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.
Cho et al., “Analysis of an Adaptive SIC for Near-Far Resistant DS-CDMA”, IEEE Transactions on Communications, vol. 46, No. 11, Nov. 1998, pp. 1429-1432.
Oon et al., “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, 1998, pp. 42-43 and 65-66.
3rdGeneration Partnership Project; Technical Specification Group Radio Access Networks; UTRA (UE) TDD; Radio Transmission and Reception 3G TS 25.102 V3.3.0 Release 1999, p. 37.
3rdGeneration Partnership Project; Technical Specification Group Radio Access Network; Physical Channels and Mapping of Transport Channels onto Physical Channels (TDD), 3G TS 25.221 V3.2.0, Mar. 2000, pp. 3-10.
Karimi et al., “A Novel and Efficient Solution to Block-Based Joint-Detection Using Approximate Cholesky Factorization”, IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, vol. 3, 1998, pp. 1340-1345.
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 the IEEE Scalable High Performance Computing Conference, Knoxville, TN, May 23-25, 1994, pp. 615-622.
Benvenuto et al., “Joint Detection with Low Computational Complexity for Hybrid TD-CDMA Systems”, IEEE, 2000, pp. 245-253.
Pan et al., “Low Complexity Data Detection Using Fast Fourier Transform Decomposition of Channel Correlation Matrix”, 2001, IEEE, pp. 1322-1326.
Lee et al. “A Fast Computation Algorithm For the Decision Feedback Equalizer,” IEEE Transactions on Communications, vol. 43, No. 11, Nov. 1995, pp. 2742-2749.
Bocure Tesfaldet
InterDigital Technology Corporation
Volpe and Koenig P.C.
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