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中文摘要：
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8dB左右增益,优化后的发射信号能获得5～9dB增益。
英文摘要：
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 is proposed to obtain the achievable diversity order.Then,two full-diversity（maximum diversity） transmit signal design methods are proposed.To optimize the first proposed transmit signal,one interleaved-partition subcarrier grouping scheme,establishing a tradeoff between receivers＇ location and performance,is introduced.Simulation results are presented in a representative scenario to demonstrate the performance gains offered by the proposed transmit signals.
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