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A level of interference affecting signal components of received communication signals is estimated and used to weight the signal components. The signal components in a each of a number of groups of signal components are weighted based on respective interference estimates to thereby adjust signal com

A level of interference affecting signal components of received communication signals is estimated and used to weight the signal components. The signal components in a each of a number of groups of signal components are weighted based on respective interference estimates to thereby adjust signal components for colored interference, which may vary significantly between different groups of signal components. Each group of signal components may include a single component or components within a relatively narrow sub-band of the communication signals, such as a coherence bandwidth of an Orthogonal Frequency Division Multiplexing (OFDM) signal.

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1. A method of processing communication signals comprising: receiving at least one communication signal, the at least one communication signal comprising a plurality of signal components;estimating interference affecting the at least one received communication signal to obtain at least a first inter

1. A method of processing communication signals comprising: receiving at least one communication signal, the at least one communication signal comprising a plurality of signal components;estimating interference affecting the at least one received communication signal to obtain at least a first interference estimate based on a first modulated symbol of a first signal component from the plurality of signal components; andapplying a first weight based on the first interference estimate to a first signal component of the plurality of signal components to obtain a first weighted signal component. 2. The method of claim 1, further comprising decoding the first weighted signal component. 3. The method of claim 2, wherein: receiving the at least one received communication signal comprises receiving a plurality of communication signals, each having a plurality of signal components,the method further comprises applying a first weight based on the first interference estimate to a first signal component of the plurality of signal components of each of the plurality of communication signals to obtain a plurality of first weighted signal components; anddecoding comprises combining the plurality of weighted signal components. 4. The method of claim 3, wherein the signal combining uses hard-decision estimates. 5. The method of claim 4, wherein the hard-decision estimates are generated using summations over a coherence bandwidth of Orthogonal Frequency Division Multiplexing (OFDM) signals. 6. The method of claim 1, wherein receiving the at least one received communication signal comprises receiving a plurality of communication signals. 7. The method of claim 6, wherein the communication signals comprise diversity signals in a Space-Time Transmit Diversity (STTD) system. 8. The method of claim 7, wherein the diversity signals are Orthogonal Frequency Division Multiplexing (OFDM) signals, and wherein the plurality of signal components comprises sub-carrier signals. 9. The method of claim 7, wherein the STTD system is a 2-by-2 STTD system. 10. The method of claim 1, wherein receiving the at least one received communication signal comprises receiving a plurality of communication signals, and wherein the communication signals comprise received communication signals in a Multiple Input Multiple Output (MIMO) system. 11. The method of claim 1, further comprising decoding the first weighted signal component, wherein the decoding comprises interference-weighted hard-decision decoding. 12. The method of claim 11, wherein the plurality of signal components comprises a first group and a second group, and applying the first weight comprises applying at least the first weight to each signal component in the first group of signal components that includes the first signal component, the method further comprising applying a second weight to each signal component in the second group of signal components. 13. The method of claim 11, wherein decoding further comprises generating first-cut hard-decision estimates of the at least one received communication signal and using the first-cut hard-decision estimates in the interference-weighted hard-decision decoding. 14. The method of claim 13, further comprising determining whether the first-cut hard-decision estimates are within a tolerance of results of the interference-weighted hard-decision decoding, and if not, repeating the interference-weighted hard-decision decoding using the interference-weighted hard-decision decoding results. 15. The method of claim 14, wherein determining whether the first-cut hard-decision estimates are within a tolerance of the interference-weighted hard-decision decoding results comprises measuring a Euclidean distance between the first-cut hard-decision estimates and the interference-weighted hard-decision decoding results. 16. The method of claim 1, further comprising demodulating the plurality of signal components to generate demodulated signal components, and applying respective weights to at least two of the demodulated signal components. 17. The method of claim 16, wherein receiving the at least one received communication signal comprises receiving a plurality of communication signals, and wherein demodulating comprises determining a log likelihood ratio of each bit of a modulation symbol mapped to signal components of transmitted signals respectively corresponding to the plurality of signal components of the received communication signals, the method further comprising applying respective weights to the log likelihood ratio with respective estimates of interference power. 18. The method of claim 17, further comprising decoding the received communication signals to generate decoded communication signal components, and wherein demodulating comprises demodulating the decoded communication signal components. 19. The method of claim 18, wherein the decoded communication signal components comprise a first plurality of decoder output signal components and a second plurality of decoder output signal components, and wherein demodulating comprises determining the log likelihood ratio for each decoder output signal component. 20. A computer program product comprising a non-transitory computer-readable medium storing instructions which, when executed by a processor, cause the processor to perform the method of claim 1. 21. A communication signal receiver comprising: an input adapted for connection to an antenna system for receiving at least one communication signal; anda processor adapted to: receive the at least one communication signal from the input, wherein the at least one communication signal comprises a plurality of sub-carrier signal components;generate a first interference estimate for a first signal component from the plurality of sub-carrier signal components of the at least one communication signal, wherein the first signal component is included in a first group of signal components of the at least one received communication signal and wherein the first interference estimate is based on at least one modulated symbol of one of the plurality of sub-carrier signal components;generate a second interference estimate for a second signal component from the plurality of sub-carrier signal components of the at least one communication signal, wherein the second signal component is included in a second group of signal components of the at least one received communication signal and wherein the second interference estimate is based on at least one modulated symbol of one of the plurality of sub-carrier signal components;apply a first weight based on the first interference estimate to each signal component of the first group of signal components; andapply a second weight based on the second interference estimate to each signal component of the second group of signal components. 22. The communication signal receiver of claim 21, wherein the at least one communication signal comprises Orthogonal Frequency Division Multiplexing (OFDM) signals. 23. The communication signal receiver of claim 22, wherein each of the first and second groups of signal components includes sub-carrier signals within a coherence bandwidth of the OFDM signals. 24. The communication signal receiver of claim 21, wherein the antenna system comprises a single antenna. 25. The communication signal receiver of claim 24, wherein the single antenna is configured to receive communication signals from a plurality of transmitting antennas. 26. The communication signal receiver of claim 21, wherein the antenna system comprises a plurality of antennas. 27. The communication signal receiver of claim 26, wherein each of the plurality of antennas is configured to receive communication signals from a plurality of transmitting antennas. 28. The communication signal receiver of claim 21, wherein the processor comprises an interference estimator for estimating interference in the at least one communication signal and a decoder adapted for connection to the interference estimator and to the input. 29. The communication signal receiver of claim 28, wherein the processor further comprises a demodulator adapted for connection to the decoder for demodulating decoded communication signal components output from the decoder, and a multiplier connected to the demodulator and to the interference estimator for applying the first and second weights to first and second demodulated communication signal components output from the demodulator. 30. The communication signal receiver of claim 29, wherein the demodulator is selected from a group consisting of a Quadrature Amplitude Modulation (QAM) demodulator and a Quadrature Phase Shift Keying (QPSK) demodulator. 31. The communication signal receiver of claim 28, wherein the decoder combines weighted signal components of different received communication signals to generate decoded communication signals. 32. The communication signal receiver of claim 31, wherein the decoder is selected from a group consisting of a Space-Time Transmit Diversity (STTD) decoder and a Multiple Input Multiple Output (MIMO) decoder.