【摘要】 在频率选择性衰落信道中,两根分布式接收天线接收来自单天线发射机的发射信号。利用两根分布式接收天线的协同,提出了一种协同的粗定时同步方法。该方法在不增加各分布式接收天线预定虚警概率的情况下,通过两根分布式接收天线的协同,避免了部分漏检情况的发生。分析和仿真结果表明,提出的方法可以改善OFDM系统粗定时同步的正确检测和漏检性能。更多还原

【Abstract】 In frequency-selective fading channels,two distributed receive antennas are assumed for receiving the signal transmitted from the transmitter with a single antenna.By using the cooperation between the two distributed receive antennas,a cooperative coarse timing synchronization method is proposed.Without increasing the pre-defined false alarm probability for each distributed receive antenna,some of missed detection can be avoided with the cooperation of the two distributed receive antennas.By the analysis and simulations,it is shown that the missed detection and correct detection of coarse timing synchronization in OFDM system can be improved by employing the proposed method.更多还原