Determining a channel matrix by measuring interference

Details Determining a channel matrix by measuring interference Determining a channel matrix by measuring interference

2007-08-31

2010-11-30

Ha, Dac V (Department: 2611)

Pulse or digital communications

Spread spectrum

Direct sequence

C375S220000, C375S267000, C375S299000, C370S278000, C370S465000, C370S480000, C455S101000, C455S115100

Reexamination Certificate

active

07843990

ABSTRACT:
An apparatus includes a transmitter configured to transmit symbols to one or more receivers via a plurality of communication channels of a physical communication link. The transmitter is configured to estimate a phase of one or more off-diagonal elements of a channel matrix for the physical communication link based on values of signal-to-interference-plus-noise ratios at the one or more receivers.

REFERENCES:
patent: 7260153 (2007-08-01), Nissani (Nissensohn)
patent: 2003/0016626 (2003-01-01), Lagerberg et al.
patent: 2003/0210750 (2003-11-01), Onggosanusi et al.
patent: 2004/0264559 (2004-12-01), Cendrillon et al.
patent: 2005/0141631 (2005-06-01), Takano
patent: 2006/0153178 (2006-07-01), Cendrillon et al.
patent: 2008/0089442 (2008-04-01), Lee et al.
U.S. Appl. No. 11/848,684, filed Aug. 31, 2007, Adriaan De Lind Van Wijngaarden, et al.
U.S. Appl. No. 11/897,809, filed Aug. 31, 2007, Mamoun Guenach, et al.
U.S. Appl. No. 11/934,347, filed Nov. 2, 2007, Alexei Ashikhmin, et al.
U.S. Appl. No. 11/796,366, filed Apr. 26, 2002, Gerhard G. Kramer, et al.
Kihong Kim, et al, “Interference Mitigation in MIMO Systems by Subset Antenna Transmission”Wireless Personal Communications, Kluwer Academic Publishers, D0, vol. 40, No. 3, Aug. 9, 2006, pp. 305-315.
Raphael Cendrillon, et al, “Partial crosstalk precompensation in downstream VDSL”Signal Processing, Elsevier Science Publishers, vol. 84, No. 11, Nov. 1, 2004, pp. 2005-2019.
M. Webb, et al, “Matrix structure and capacity bounds of MIMO channels in interference”IEE Proceedings: Communications, Institution of Electrical Engineers, GB, vol. 153, No. 4, Aug. 3, 2006, pp. 476-481.
D.P. Palomar, et al, “Optimum Joint Transmit-Receive Linear Processing for Vectored DSL Transmission with QoS Requirements”, Conference Record of the 36th.Asilomar Conference on Signals, Systems, &Computers, Pacific Grove, CA, Nov. 3-6, 2002;Asilomar Conference on Signals, Systems, &Computers, New York, NY, IEEE, US. vol. 1, pp. 388-392.
PCT International Search Report dated Aug. 27, 2008 (PCT/US2008/004232), 4 pgs.

Affiliated with

Also associated with

Rating

Determining a channel matrix by measuring interference does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Determining a channel matrix by measuring interference, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Determining a channel matrix by measuring interference will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4165253