Pulse or digital communications – Systems using alternating or pulsating current – Plural channels for transmission of a single pulse train
Reexamination Certificate
2007-07-24
2007-07-24
Bocure, Tesfaldet (Department: 2611)
Pulse or digital communications
Systems using alternating or pulsating current
Plural channels for transmission of a single pulse train
C375S299000, C375S347000, C455S101000, C455S132000
Reexamination Certificate
active
10198303
ABSTRACT:
Provided are methods and apparatuses for use in wireless communication between a transmitter having plural transmit antennas and a receiver having plural receive antennas. A first data stream using a first transmit antenna weight vector and a second data stream using a second transmit antenna weight vector simultaneously are transmitted to the receiver. In addition, a first perturbation signal corresponding to the first transmit antenna weight vector and a second perturbation signal corresponding to the second transmit antenna weight vector are transmitted. Feedback regarding the first transmit antenna weight vector and the second transmit antenna weight vector is received from the receiver and is utilized to modify the first transmit antenna weight vector and the second transmit antenna weight vector.
REFERENCES:
patent: 5517686 (1996-05-01), Kennedy et al.
patent: 6748024 (2004-06-01), Kuchi et al.
patent: 6831943 (2004-12-01), Dabak et al.
patent: 6907270 (2005-06-01), Blanz
patent: 6952455 (2005-10-01), Banister
patent: 2001/0053678 (2001-12-01), Bonaccorso et al.
Derek Gerlach and Arogywami Paulraj, “Adaptive Transmitting Antenna Arrays with Feedback,” Oct. 199, IEEE Signal Processing Letters, vol. 1, No. 10.
3GPP specification: “Advanced Closed loop TX Diversity Concept (eignbeamforming),” 3GPP TSG RAN WG 1, Jul. 4-7, 2000, 1-12.
3GPP specification,“Closed Loop mode Transmit Diversity,” 3GPP TS 25-214 V5.2 Draft (Sep. 2002),pp. 43-51
Derryberry, et al. (Nokia), “Transmit Adaptive Arrays without User Specific Pilot”, Aug. 1999.
Banister, et al., “A Stochastic Gradient Algorithm for Transmit Antenna Weight Adaptation with Feedback”, Workshop on Signal Processing Advances in Wireless Communications, Mar. 2001.
Banister, et al., “Tracking Performance of a Stochastic Gradient Algorithm for Transmit Antenna Weight Adaptation with Feedback”, International Conference on Acoustics, Speech and Signal Processing, May 2001.
Harrison (Motorola), “TX AA Parameter Recommendations”, Sep. 1999.
Harrison, et al. (Motorola), “Open and Closed Loop Transmit Diversity at High Data Rates on 2 and 4 Elements”, Aug. 1999.
Liang, et al., “Forward Link Antenna Diversity Using Feedback for Indoor Communication Systems”, Proceedings of International Conference on Acoustics, Speech and Signal Processing, May 1995, pp. 1753-1755.
Liang, et al., “Transmit Antenna Array Techniques for Cellular CDMA Systems”, Proceedings of the Ninth International Symposium on Personal, Indoor, and Mobile Radio Communications, Sep. 1998, pp. 1396-1400.
Rashid-Farrokhi, et al., “Transmit Beamforming and Power Control for Cellular Wireless Systems”, IEEE Journal on Selected Areas in Communications, vol. 16, No. 8, Oct. 1998.
Alamouti, “A Simple Transmit Diversity Technique for Wireless Communications”, IEEE Journal on Select Areas in Communications, vol. 16, No. 8, Oct. 1998.
G. Foschini, “Layered Space-Time Architecture for Wireless Communication in a Fading Environment When Using Multi-Element Antennas”, Bell Labs Technical Journal, Autumn 1996.
Foschini, et al., “On Limits of Wireless Communications in a Fading Environment when Using Multiple Antennas”, Wireless Personal Communications, vol. 6, 1998, pp. 311-335.
Tarokh, et al., “Space-Time Block Coding for Wireless Communications: Performance Results”, IEEE Journal on Selected Areas in Communications, vol. 17, No. 3, Mar. 1999, pp. 451-460.
E. Telatar, “Capacity of Multi-Antenna Gaussian Channels”, European Transactions on Telecommunications, vol. 10, No. 6, Nov. 1999, pp. 585-595.
Bliss, et al., “MIMO Environmental Capacity Sensitivity”, Proceedings of the 34th Asilomar Conference on Signals, Systems and Computers, Oct. 2000.
Bocure Tesfaldet
Kirkpatrick & Lockhart Preston Gates Ellis
LSI Logic
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