新颖的平均传输参考型超宽带相关接收机的研究

基于超宽带（UWB）通信在多个比特数据传输中信道基本不变的特点,提出一种平均传输参考型UWB相关接收机．发送端的每一帧数据由头部几个参考信号和多个调制数据信号组成,接收机采用这几个参考信号接收波形的累加平均作为相关模板来解调随后的数据信号,由于提高了相关模板的信噪比,从而改善了接收机的误码率性能,同时结构较为简单,便于实现．理论分析和IEEE多径信道模型的仿真表明：该接收机的比特误码率明显优于传统自相关接收机,在10^-2误码率时约有2dB的信噪比增益．

Research on Novel Ultra-Wideband Correlation Receiver of Averaged Transmitted-Reference Type

By considering the feature that the channel is basically unvaried during the course of transmitting many bits data in ultrawideband(UWB)communications,a novel UWB correlation receiver of the average transmitted-reference type was presented.In transmitting end,every frame is composed of header several reference signals and many modulated data signals.The accumulated average of these received reference signal waves is used by the receiver as the correlation template to demodulate the subsequent data signals. Because the signal-to-noise ratio of the correlation template is increased,the bit error ratio(BER) performance of the receiver is improved while the structure is still kept simple and easy to be realized.The theoretical analysis and simulation of the IEEE multipath channel models show that BER performance of the receiver is obviously superior to the conventional autocorrelation receivers and has about 2 dB signal-to-noise ratio gain at 10~(-2) BER.