Multi-user channel estimation in OFDMA uplink systems based on irregular sampling and reduced pilot overhead

被引：0

作者：

Fertl, Peter ^{[1
]}

Matz, Gerald ^{[1
]}

机构：

[1] Vienna Univ Technol, Inst Commun & Radio Frequency Engn, Gusshausstr 25-389, A-1040 Vienna, Austria

来源：

2007 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING, VOL III, PTS 1-3, PROCEEDINGS | 2007年

关键词：

OFDMA; uplink; channel estimation; irregular sampling; multiuser channels;

D O I：

暂无

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

This paper considers multiuser OFDMA uplink transmissions over doubly selective channels. We propose a pilot-aided channel estimator based on irregular sampling techniques. Our novel estimator features several benefits: it has low complexity, excellent performance, and enables highly flexible subcarrier allocation. Simulation results show that our scheme significantly outperforms conventional least-squares channel estimation and allows to support high-rate users with reduced pilot overhead.

引用

页码：297 / +

页数：2

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