Low-Complexity MMSE Combining for Linear Impulse Radio UWB Receivers

被引：0

作者：

Gezici, Sinan ^{[1
]}

Molisch, Andreas F. ^{[2
,3
]}

Kobayashi, Hisashi ^{[1
]}

Poor, H. Vincent ^{[1
]}

机构：

[1] Princeton Univ, Dept Elect Engn, Princeton, NJ 08544 USA

[2] Lund Univ, Lund, Sweden

[3] Mitsubishi Elect Res Labs, Cambridge, MA 02139 USA

来源：

2006 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS, VOLS 1-12 | 2006年

基金：

美国国家科学基金会;

关键词：

Ultra-wideband (UWB); impulse radio (IR); Rake receiver; MMSE combining;

D O I：

暂无

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

Due to the fine delay resolution of typical ultra wideband (UWB) systems, Rake receivers need to combine samples from a large number of multipath components (MPCs) in order to collect sufficient signal energy for reliable decisions. In addition, these samples need to be combined optimally in order to minimize bit error probability. The optimal linear minimum mean square error (MMSE) combining scheme might require inversion of a large matrix depending on channel and system parameters. Therefore, suboptimal algorithms with lower computational complexity but close-to-optimal performance are desirable. In this paper, a low-complexity combining scheme is proposed for that purpose, which divides samples into a number of groups and performs MMSE combining in two steps. Performance of this two-step combining scheme is investigated theoretically and by simulations.

引用

页码：4706 / 4711

页数：6

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