【摘要】 为四发射天线的多输入多输出(Multi-input multi-output,MIMO)系统提出一种高速率全分集的分层块空时(Layered block space-time,LBST)分组码。该空时分组码能够提供2符号/信道利用的传输率,为了能够正确地译码,接收天线数必须不少于2个。本文分析了LBST分组码的编码结构与简化的译码算法,并对其性能进行了仿真分析。结果表明:本文方案与其他空时分组码相比较,具有一定的优越性,并且采用简化的译码算法可以很大程度上降低计算复杂度。更多还原

【Abstract】 A high-rate full-diversity space-time block code is proposed for multi-input multi-output(MIMO) system of four transmit antennas.The layered block space-time code can provide two symbols per channel.To decode the symbols correctly,there must be not less than two antennas at the receiver.Furthmore,this paper analyzes the encoding structure and the simplified decode method for the layered block space-time code.Simulation results show that the new scheme is superior to other space-time codes.And the simplified decoding algorithm can reduce the computational complexity.更多还原