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Bit-Interleaved Time-Frequency Coded Modulation for OFDM Systems Over Time-Varying Channels
IEEE Transactions on Communications
Orthogonal frequency-division multiplexing (OFDM) is a promising technology in broadband wireless communications, with its ability to transform a frequency-selective fading channel into multiple flat-fading channels. However, the time-varying characteristics of wireless channels induce the loss of orthogonality among OFDM subcarriers, which was generally considered harmful to system performance. In this paper, we propose a bit-interleaved time-frequency coded modulation (BITFCM) scheme for OFDMdoi:10.1109/tcomm.2005.851561 fatcat:z6rjnrs35bge3kcnny7dsmwapi