Detection of physics-based ultra-wideband signals using generalized RAKE with multiuser detection (MUD) and time-reversal mirror

被引:16
作者
Qiu, RCM [1 ]
Zhang, JQ [1 ]
Guo, N [1 ]
机构
[1] Tennessee Technol Univ, Ctr Mfg Res, Dept Elect & Comp Engn, Cookeville, TN 38505 USA
关键词
generalized RAKE; multiuser detection (MUD); physics-based; pulse distortion; time reversal; ultra-wideband (UWB);
D O I
10.1109/JSAC.2005.863813
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
This paper first introduces per-path pulse distortion in multiuser detection for ultra-wideband communications. A new generalized RAKE structure that estimates and compensates for the pulse distortion is used. An finite-impulse response filter representation of the per-path impulse response is used and estimated. The new structure greatly improves the system performance. With four users considered in our simulations in a high-rise building environment, it is found that the average performance of the generatized RAKE using minimum mean-square error (MMSE) detection is improved over the conventional RAKE by 1.8 dB. Both synchronous and asynchronous transmission schemes for decorrelating detector and MMSE detector are considered.
引用
收藏
页码:724 / 730
页数:7
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