摘要
结合STBC和VBLAST混合编码结构的优点,提出将块分组编码应用于MIMO-OFDM系统。在发射端数据流分成两层输入块分组编码器后进行OFDM调制,在接收端,采用MMSE干扰抑制算法译码。块分组编码将数据符号按层分块后交叉通过不同的天线对发射,数据流之间产生了一定交织效果,使编码获得了更好的分集增益。
A block coding scheme is proposed in Multiple-input multiple-output and orthogonal frequency division multiplexing （MIMO-OFDM） systems by combining the advantages of STBC and VBLAST. At the transmitter, the data stream is partitioned into two groups which are block encoded and OFDM modulated. At the receiver, MMSE method can be employed. The block coding symbols are transmitted decussately through different antenna groups after blocking by layers, then, there are some in- terleaving effects between the data flows so as to get better diversity gain.
出处
《信息通信》
2012年第1期4-5,共2页
Information & Communications
基金
国家自然科学基金(60702028)
甘肃省高等学校基本科研业务费项目(20996)
