频域谱最优合并超宽带接收技术

Frequency-Domain Spectrum-Optimal-Combination Technology for Ultra Wide-Band Systems

基于超宽带(UWB)无线通信系统提出了新型的频域接收技术———频域谱最优合并(FD-SOC)技术,该技术利用任意超宽带脉冲信号的频域谱矢量和为实数,且正负极性随脉冲形状变化的性质,在频域内实现数据信息的最优接收.理论分析了FD-SOC技术的原理.计算机实验仿真了超宽带信道环境下(IEEE 802.15.3a信道模型),基于频域子空间信道估计的FD-SOC超宽带接收机和基于最大似然(ML)信道估计的超宽带Rake接收机的性能,结果显示FD-SOC超宽带接收机具有良好的性能.

Frequency-domain spectrum-optimal-combination （FD-SOC） technology is a novel receiver technology for ultra wide-band （UWB） systems. This technology implements the optimal reception of the transmitted data bits in frequency domain by utilizing the fact that the sum of the discrete spectrum components of each UWB pulse is real and the polarity of the sum is variable according to the pulse shape. The principle of FD-SOC was analyzed theoretically, and then the performance of FD-SOC UWB receiver with frequency-domain subspace channel estimation and UWB Rake receiver with maximum likelihood （ML） channel estimation were evaluated under UWB channel environment （IEEE 802.15.3a channel model）. The simulation results show that FD-SOC UWB receiver has good performances.