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多输入多输出正交频分复用(MIMO-OFDM)是4G和5宽带无线通信中最重要的空间接口。MIMO可通过多路天线传输多种信号,OFDM可将一条无线通道分隔成空间非常接近的大量子通道,从而提供更可靠的高速通信。研究结果表明,MIMO还可以和其他接口联合使用,如时分多址(TDMA)和码分多址(CDMA)。MIMO and OFDM的结合对高速数据传输是最实际的应用。利用不同的turbo编码率,误码率(BER)得到了改善。
Multiple Input Multiple Output Orthogonal Frequency Division Multiplexing (MIMO-OFDM) is the most important spatial interface for 4G and 5 wideband wireless communications. MIMO transmits multiple signals over multiple antennas. OFDM separates a single wireless channel into a large number of subchannels that are close enough in space to provide more reliable, high-speed communications. The results show that MIMO can also be used in conjunction with other interfaces such as Time Division Multiple Access (TDMA) and Code Division Multiple Access (CDMA). The combination of MIMO and OFDM is the most practical application for high speed data transmission. With different turbo coding rates, the bit error rate (BER) has been improved.