Space-time-frequency coded ofdm over frequency-selective...

Details Space-time-frequency coded ofdm over frequency-selective... Space-time-frequency coded ofdm over frequency-selective...

H - Electricity

04

J

H04J 11/00 (2006.01) H04Q 7/32 (2006.01)

Patent

CA 2427403

Techniques are described for space-time-frequency (STF) coding of multi- carrier transmissions over frequency-selective fading channels. In particular, techniques for STF coding of MIMO-OFDM systems are described that provide maximum diversity, high coding gains, and low decoding complexity are described. A set of generally correlated OFDM subcarriers are divided into groups of subcarriers creating a set of group STF (GSTF) subsystems, within which STF coding is applied to each GSTF subsystem. Subcarrier grouping preserves maximum diversity gains and simplifies both the code construction within each GSTF and decoding complexity. ST coding techniques are used in designing STF block (STFB) and STF trellis (STFT) codes which are applied within GSTF subsystems.

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