Pulse or digital communications – Spread spectrum – Direct sequence
Reexamination Certificate
2008-11-25
2009-10-27
Ha, Dac V (Department: 2611)
Pulse or digital communications
Spread spectrum
Direct sequence
C375S148000, C375S260000, C375S340000, C370S479000
Reexamination Certificate
active
07609750
ABSTRACT:
Data is estimated of a plurality of received spread spectrum signals by a wireless communication apparatus. The plurality of received communications are received in a shared spectrum. The received communications are sampled to produce a received vector of sequential samples. The received vector is processed to produce a plurality of segments. Each segment is processed separately to estimate data of the received communications.
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Karimi et al., “A Novel and Efficient Solution to Block-Based Joint-Detection Using Approximate Cholesky Factorization”, Motorola GSM Products Division, Swindon, UK, 1998.
Kärkkäinen et al., “Performance of an Asynchronous DS-CDMA System with Long and Short Spreading Codes - A Simulation Study”, Military Communications Conference, 1994., MILCOM '94, Conference Record, 1994 IEEE, vo. 3, pp. 780-784, (Oct. 2-5, 1994).
Klein et al., “Linear Unbiased Data Estimation in Mobile Radio Systems Applying CDMA”, IEEE Journal on Selceted Areas in Communications, vol. 11, No. 7, Sep. 1993.
Klein et al., “Zero Forcing and Minimum Mean-Square-Error Equalizer for Multiuser Detection in Code-Division Multiple-Access Channels”, IEEE Transactions on Vehicular Technology, vol. 45, No. 2, May 1996.
Klein, “Data Detection Algorithms Specially Designed for the Downlink of CDMA Mobile Radio Systems”, IEEE 47thVehicular Technology Conference, Phoenix, Arizona, USA, May 4-7, 1997.
Misra et al., “A Computationally Efficient Hybrid Joint Detection and Successive Interference Cancellation”,VTC 2001 Spring, IEEE VTS 53rd. Vehicular Technology Conference. vol. 3 of 4. Conf 53. May 6, 2001 pp. 1784-1788, XP001082450, ISBN: 0-7803-6728-6.
Pan et al., “Low Complexity Data Detection Using Fast Fourier Transform Decomposition of Channel Correlation Matrix”, Globecom'01 IEEE Global Telecommunications Conference, San Antonio, TX Nov. 25-29, 2001, vol. 2 of 6 pp. 1322-1326, XP001099319, ISBN: 0-7803-7206-9.
Tsai et al., “Hybrid MMSE and SIC for Multiuser Detection”, VTC 2001 Spring. IEEE VTS 53rd. Vehicular Technology Conference. vol. 3 of 4. Conf 53. May 6, 2001 pp. 1779-1783, XP001082449, ISBN: 0-7803-6728-6.
Tsatsanis et al., “Adaptive blind interference cancellation in CDMA systems”, Seamless Interconnection for Universal
Pan Jung-Lin
Zeira Ariela
Ha Dac V
InterDigital Technology Corporation
Volpe and Koenig PC
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