ON THE PERFORMANCE OF ANALOG MULTIUSER DETECTION IN ULTRA-WIDEBAND TRANSMITTED-REFERENCE SYSTEM  

作　　者：Ge Wei Zheng Lin Qiu Hongbing 

机构地区：[1]Guilin University of Electronic Technology （ GUET）, Guilin 541004, China

出　　处：《Journal of Electronics(China)》2009年第6期798-803,共6页电子科学学刊（英文版）

基　　金：Supported by the Guangxi Natural Science Foundation (No.0731025, No.0731026);the Established Project by Guangxi Education Department (No.200808LX117)

摘　　要：The detection performance is evaluated for our proposed analog multiuser receiver in Ultra-WideBand (UWB) transmitted-reference system. In the presence of dense multipath and multi-access signals,the performance analysis is difficult due to the complicated waveform of received impulse. We develop an approach to analyze the steady-state Signal-to-Interference-plus-Noise (SINR) of the detector output. The multipath-spread impulse is fitted to an exponentially decaying profile in the analysis. A closed-form expression of steady-state SINR is further deduced for the proposed Least Minimum Square (LMS) detector. The analysis is validated by simulations in Line-Of-Sight (LOS) and Non-Line-Of-Sight (NLOS) channel respectively. Based on the theoretical results,the multipath delay spread is employed to determine the optimal width of the integration window of the detector.The detection performance is evaluated for our proposed analog multiuser receiver in Ultra-WideBand （UWB） transmitted-reference system. In the presence of dense multipath and multi-access signals, the performance analysis is difficult due to the complicated waveform of received impulse. We develop an approach to analyze the steady-state Signal-to-Interference-plus-Noise （SINR） of the detector output. The multipath-spread impulse is fitted to an exponentially decaying profile in the analysis. A closed-form expression of steady-state SINR is further deduced for the proposed Least Minimum Square （LMS） detector. The analysis is validated by simulations in Line-Of-Sight （LOS） and Non-Line-Of-Sight （NLOS） channel respectively. Based on the theoretical results, the multipath delay spread is employed to determine the optimal width of the integration window of the detector.

关 键 词：Multiuser detection Minimum Mean Square Error （MMSE） Transmitted reference Ultra-WideBand （UWB） 

分 类 号：TN914.53[电子电信—通信与信息系统] TN957.51[电子电信—信息与通信工程]