A method of computing a signal-to-interference-plus-noise ratio of a signal received on an OFDM carrier over a communication channel, said method comprising: jointly detecting symbols in a signal-of-interest; and computing a signal-to-interference-plus-noise ratio for the signal-of-interest by: computing per-subcarrier signal-to-interference-plus-noise ratios for a plurality of subcarriers allocated to the signal-of- interest; computing per-subcarrier capacities for the subcarriers allocated to the signal-of-interest based on the per subcarrier signal-to-interference-plus-noise ratios; and computing a total signal-to-interference-plus-noise ratio for the subcarriers based on the per-subcarrier capacities of the subcarriers, wherein the signal-of-interest is received on multiple antennas and wherein computing per-subcarrier signal-to-interference-plus-noise ratios for a plurality of subcarriers carrying the signal-of-interest comprises combining the contributions of each antenna to obtain the per-subcarrier signal-to-interference-plus- noise ratios, and wherein combining the contributions of each antenna to obtain the per-subcarrier signal-to-interference-plus-noise ratios comprises computing interference correlations across said antennas and combining the contributions of each antenna based on the interference correlations. jointly detecting symbols in a signal-of-interest; and computing a signal-to-interference-plus-noise ratio for the signal-of-interest by: computing per-subcarrier signal-to-interference-plus-noise ratios for a plurality of subcarriers allocated to the signal-of- interest; computing per-subcarrier capacities for the subcarriers allocated to the signal-of-interest based on the per subcarrier signal-to-interference-plus-noise ratios; and computing a total signal-to-interference-plus-noise ratio for the subcarriers based on the per-subcarrier capacities of the subcarriers, wherein the signal-of-interest is received on multiple antennas and wherein computing per-subcarrier signal-to-interference-plus-noise ratios for a plurality of subcarriers carrying the signal-of-interest comprises combining the contributions of each antenna to obtain the per-subcarrier signal-to-interference-plus- noise ratios, and wherein combining the contributions of each antenna to obtain the per-subcarrier signal-to-interference-plus-noise ratios comprises computing interference correlations across said antennas and combining the contributions of each antenna based on the interference correlations. computing per-subcarrier signal-to-interference-plus-noise ratios for a plurality of subcarriers allocated to the signal-of- interest; computing per-subcarrier capacities for the subcarriers allocated to the signal-of-interest based on the per subcarrier signal-to-interference-plus-noise ratios; and computing a total signal-to-interference-plus-noise ratio for the subcarriers based on the per-subcarrier capacities of the subcarriers, wherein the signal-of-interest is received on multiple antennas and wherein computing per-subcarrier signal-to-interference-plus-noise ratios for a plurality of subcarriers carrying the signal-of-interest comprises combining the contributions of each antenna to obtain the per-subcarrier signal-to-interference-plus- noise ratios, and wherein combining the contributions of each antenna to obtain the per-subcarrier signal-to-interference-plus-noise ratios comprises computing interference correlations across said antennas and combining the contributions of each antenna based on the interference correlations.