满速率满分集优化的单频网发射信号

针对分布式发射天线单频网，设计了3种发射信号及针对第一种发射信号的优化方案。首先通过误对概率分析，推导出满速率单频网能获得的分集度，设计了一种能达到该分集度的发射信号和具有满分集度的2种发射信号。然后针对第一种发射信号，提出了基于异步时延的子载波交织分组的信号优化方法，在接收机位置与性能之间建立了一种折中关系。仿真结果表明，设计的满分集发射信号能获得8 dB左右增益，优化后的发射信号能获得5～9 dB增益。

Full-Diversity Full-Rate Optimum Transmit Signal for SFN

To improve performance of single frequency networks employing distributed transmit antennas,some transmit signals are introduced in this paper. Pair-wise error probability is derived and one transmit signal isproposed to obtain the achievable diversity order. Then, two full-diversity (maximum diversity) transmit signaldesign methods are proposed. To optimize the first proposed transmit signal, one interleaved-partition subcarriergrouping scheme, establishing a tradeoff between receivers' location and performance, is introduced. Simulationresults are presented in a representative scenario to demonstrate the performance gains offered by the proposedtransmit signals.