100Mbit/s SDM-COFDM over MIMO channel for broadband mobile communications

摘要

This paper proposes SDM (Space Division Multiplexed)-COFDM (Coded Orthogonal Frequency Division Multiplexing) scheme that realizes MIMO (Multi Input Multi Output) channel transmission without frequency bandwidth expansion. The proposed scheme improves the degradation due to both mutual channel interference and fading with feedforward control by using the estimated propagation matrix for each OFDM subcarrier. Moreover, the proposed amplitude weight factors based on each channel SNR obtain larger coding gain of soft decision Viterbi decoding. It is clarified that the proposed scheme achieves more than 100 Mbit/s per 20MHz in fading environments by computer simulation.