Patent ID: 8446939

Claim:
A method of computing a signal-to-interference-plus-noise ratio of a signal received on an orthogonal frequency-division multiplexing (OFDM) carrier over a communication channel, said method comprising: receiving two or more signals-of-interest over a multiple-input, multiple-output channel; iteratively detecting each signal-of-interest by successive interference cancellation, wherein detecting each signal-of-interest comprises jointly detecting symbols in each signal-of-interest; computing a signal-to-interference-plus-noise ratio for each signal-of-interest reflecting the remaining interference after cancellation of interference attributable to previously detected signals-of-interest, by: computing per-subcarrier signal-to-interference-plus-noise ratios for a plurality of subcarriers allocated to the signal-of-interest; computing a total signal-to-interference-plus-noise ratio for the signal-of-interest based on the per-subcarrier signal-to-interference-plus-noise ratios of the subcarriers; and determining one or more transmission formats based on the total signal-to-interference-plus-noise ratios for the signals-of-interest.