Approach to parameters estimation and signal detection for OFDMA uplink based on PN sequence

被引：0

作者：

Dang, Jun-Hong ^{[1
,2
]}

Shao, Wei-Wei ^{[3
]}

机构：

[1] Department of Electronic Engineering, Tsinghua University

[2] Department of Information Engineering, Chongqing Communication Institute

[3] Shanghai Deputy of Department of Communication, PLA General Staff Headquarters

来源：

Dianzi Yu Xinxi Xuebao/Journal of Electronics and Information Technology | 2008年 / 30卷 / 01期

关键词：

Carrier frequency offset and channel estimation; OFDMA Uplink; PN sequence; Signal detection;

D O I：

10.3724/sp.j.1146.2006.00774

中图分类号：

学科分类号：

摘要：

This paper addresses the problem of parameters estimation and signal detection for OFDMA Uplink. Firstly, a transmit signal frame structure for OFDMA uplink is designed, the preamble of frame structure consists of PN sequence. Secondly, the carrier frequency offset and channel estimation algorithm based on PN sequence are proposed, also a time minimum-mean-square-error signal detection algorithm is proposed for OFDMA uplink. Simulation results demonstrate the carrier frequency offset and channel estimation algorithm can get more accurate parameters estimation because of correlation of PN sequence, meanwhile it is immune to the noise and adapts to the fading channel, the time minimum-mean-square-error signal detection algorithm can provide better bit error rate performance.

引用

页码：38 / 43

页数：5