Data detection for codes with non-uniform spreading factors

Details Data detection for codes with non-uniform spreading factors Data detection for codes with non-uniform spreading factors

2007-12-25

2007-12-25

Kim, Kevin (Department: 2611)

Pulse or digital communications

Spread spectrum

Direct sequence

Reexamination Certificate

active

10834321

ABSTRACT:
A plurality of communication signals is received. Each communication signal has an associated code. At least two of the communication signals has a different spreading factor. The associated codes have a scrambling code period. A total system response matrix has blocks. Each block has one dimension of a length M and another dimension of a length based on in part M and the spreading factor of each communication. M is based on the scrambling code period. Data of the received plurality of communication signals is received using the constructed system response matrix.

REFERENCES:
patent: 5970060 (1999-10-01), Baier et al.
patent: 6934323 (2005-08-01), Hara
patent: 6956892 (2005-10-01), Ylitalo
patent: 7099377 (2006-08-01), Berens et al.
patent: 2002/0176392 (2002-11-01), Reznik
patent: 2003/0021249 (2003-01-01), Kim et al.
patent: 01/22610 (2001-03-01), None
Karimi, “Efficient Multi-Rate Multi-User Detection for the Asynchronous WCDMA Uplink”, Vehicular Technology Conference, 1999, IEEE vol. 1, Sep. 19, 2001, pp. 593-597.
A. Klein et al., “Zero Forcing and Minimum Mean-Square-Error Equalization for Multiuser Detection in Code-Division Multiple-Access Channels,” IEEE Transactions on Vehicular Tehnology, US, IEEE Inc. New York, vol. 45, No. 2, May 1, 1996 pp. 276-287.
H. R. 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.
J Mayer et al., “Realtime Feasibility of Joint Detection CDMA,” EPMCC, European Personal Mobile Communications Conference Together with Kommunikation, vol. 145, No. 145, 1997, pp. 245-25.
Klein et al., “Linear Unbiased Data Estimation in Mobile Radio Systems Applying CDMA,” IEEE Journal on Selected Areas in Communications, vol. 11, No. 7, Sep. 1193, pp. 1058-1066.
Benvenuto et al., “Joint Detection with Low Computational Complexity for Hybrid TD-CDMA Systems,” IEEE Journal on Selected Areas in Communications, vol. 19, No. 1, Jan. 2001, pp. 245-253.

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