Multiplex communications – Communication techniques for information carried in plural...
Reexamination Certificate
2005-06-30
2008-12-30
Harper, Vincent P. (Department: 2617)
Multiplex communications
Communication techniques for information carried in plural...
C370S310000
Reexamination Certificate
active
07471694
ABSTRACT:
In a wireless system, a method and system for channel estimation in a single channel MIMO system comprising two-transmit and multiple-receive antennas for WCDMA/HSDPA are provided. A first receive antenna and at least one additional receive antenna may receive a plurality of SC communication signals transmitted from a first and an additional transmit antennas. Estimates of the propagation channels between transmit and receive antennas may be performed concurrently and may be determined from a baseband combined channel estimate. The integration time may be based on channel estimation accuracy and wireless modem performance. The signals received in the additional receive antennas may be multiplied by a rotation waveform to achieve channel orthogonality. The rotation waveform's amplitude and phase components may be modified based on the channel estimates. Rotation of the received signals in the additional receive antennas may be continuous or periodic.
REFERENCES:
patent: 2003/0026199 (2003-02-01), Myers
patent: 2004/0131012 (2004-07-01), Mody et al.
patent: 2005/0243898 (2005-11-01), Reznik et al.
Jan Mietzner and Peter A. Hoeher, University of Kiel, Adaptive Antennas and MIMO Systems for Wireless Communications,Boosting the Performance of Wireless Communication Systems: Theory and Practice of Multiple-Antenna Techniques, IEEE Communications Magazine, Oct. 2004, pp. 40-47.
Simon Haykin, McMaster University; Mathini Sellathurai, Yvo de Jong, and Tricia Willink, Communications Research Centre Canada, Adaptive Antennas and MIMO Systems for Wireless Communications,Turbo-MIMO for Wireless Communications, IEEE Communications Magazine, Oct. 2004, pp. 48-53.
David J. Love, Purdue University, Robert W. Heath Jr., University of Texas at Austin and Wiroonsak Santipach and Michael L. Honig, Northwestern University; Adaptive Antennas and MIMO Systems for Wireless Communications, Whatis the Value of Limited Feedback for MIMO Channels?, IEEE Communications Magazine, Oct. 2004, pp. 54-59.
Quentin H. Spencer, Distribution Control Systems, Inc., Christian B. Peel, Swiss Federal Institute of Technology, A. Lee Swindlehurst, Brigham Young University, Martin Haardt, Ilmenau University of Technology, Adaptive Antennas and MIMO Systems for Wireless Communications,An Introduction to the Multi-User MIMO Downlink, IEEE Communications Magazine, Oct. 2004, pp. 60-67.
Shahab Sanayei and Aria Nosratinia, University of Texas at Dallas, Adaptive Antennas and MIMO Systems for Wireless Communications,Antenna Selection in MIMO Systems, IEEE Communications Magazine, Oct. 2004, pp. 68-73.
Aria Nosratinia, University of Texas, Dallas, Todd E. Hunter, Nortel Networks, Ahmadreza Hedayat, University of Texas, Dallas,Cooperative Communication in Wireless Networks, IEEE Communications Magazine, Oct. 2004, pp. 74-80.
Jack H. Winters,Optimum Combining for Indoor Radio Systems with Multiple Users, IEEE Communications Magazine, vol. COM-35, No. 11, Nov. 1987, pp. 1222-1230.
3RDGeneration Partnership Project;Technical Specification Group Radio Access Network; Physical Layer Procedures(FDD) (Release 6) , 3GPP TS 25.214 V6.2.0 (Jun. 2004), pp. 1-64.
Erceg Vinko
Kent Mark
Landau Uri M.
Roux Pieter
van Rooyen Pieter G. W.
Broadcom Corporation
Doan Phuoc
Harper Vincent P.
McAndrews Held & Malloy Ltd.
LandOfFree
Method and system for channel estimation in a single channel... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and system for channel estimation in a single channel..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and system for channel estimation in a single channel... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4041688