Pulse or digital communications – Systems using alternating or pulsating current – Antinoise or distortion
Reexamination Certificate
2008-03-13
2011-10-04
Liu, Shuwang (Department: 2611)
Pulse or digital communications
Systems using alternating or pulsating current
Antinoise or distortion
C375S259000
Reexamination Certificate
active
08031798
ABSTRACT:
A method for decoding and rate assignment in a wireless channel, where all dominant transmitter sources use inner codes from a particular set, comprising the steps of: i) estimating channel matrices seen from all dominant transmitter sources in response to a pilot or preamble signal transmitted by each such source; ii) converting each estimated channel matrix into an effective channel matrix responsive to the inner code of the corresponding transmitter source; iii) obtaining the received observations in a linear equivalent form (linear model) whose output is an equivalent of the received observations and in which the effective channel matrix corresponding to each dominant transmitter source inherits the structure of its inner code; iv) processing the transmitter sources according to the specified (or pre-determined) order of decoding; v) for each transmitter source, assuming perfect cancellation of signals of preceding transmitter sources; vi) computing a signal-to-interference-noise-ratio SINR responsive to the effective channel matrix of the transmitter source and the covariance matrix of the noise plus signals from remaining transmitter sources; and vii) feeding back all computed SINRs to respective transmitter sources.
REFERENCES:
patent: 7254192 (2007-08-01), Onggosanusi et al.
patent: 2008/0212539 (2008-09-01), Bottomley et al.
Madihian Mohammad
Prasad Narayan
Wang Xiaodong
Kolodka Joseph
Liu Shuwang
NEC Laboratories America, Inc.
Neff Michael
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