【摘要】 提出一种PPM-DIFF-UWB调制方式及其接收机,该接收机采用三条具有不同延时特性的相关支路实现PPM-UWB信号的差分接收,提供了一种关于PPM调制的超宽带信号的低复杂度的接收方式,可用于实现在密集多径信道下的多径分集接收,且不需要复杂的信道估计以及发送额外的参考信号。理论分析和实验仿真结果表明该接收机的误码性能优于常规的PPM-TR-UWB接收机。更多还原

【Abstract】 A PPM-DIFF-UWB modulation scheme and its receiver is proposed, in which the differential reception of the PPM-UWB signal is achieved by employing three coherent branches with different time delays. The receiver offers a low-complexity alternative to PPM-UWB reception and can be used to exploit multipath diversity inherent in wideband channels without the estimation of the channel and extra reference signal. Analysis in theory and simulation results show that the performance of error rate (PER) of the proposed PPM-DIFF-UWB receiver outperforms the traditional PPM-TR-UWB receiver.更多还原