用基于LMMSE-PIC算法消除OFDMA上行链路多用户干扰

吉林大学学报(工学版) ›› 2011, Vol. 41 ›› Issue (02): 520-0524.

用基于LMMSE-PIC算法消除OFDMA上行链路多用户干扰

关庆阳,赵洪林,郭庆

哈尔滨工业大学通信研究所,哈尔滨 150001

收稿日期:2009-04-05 发布日期:2011-03-01
通讯作者: 赵洪林（1969-）,男,教授,博士生导师.研究方向:软件无线电,扩频通信,无线通信物理层传输.E-mail:hlzhao@hit.edu.cn E-mail:hlzhao@hit.edu.cn
作者简介:关庆阳（1982-）,男,博士研究生.研究方向:无线通信物理层传输.E-mail:guan_qy@163.com
基金资助:
国家自然科学基金项目(60532030）

LMMSE-PIC algorithm for multiuser interference cancellation in uplink OFDMA communication system

GUAN Qing-yang,ZHAO Hong-lin,GUO Qing

Communication Research Center, Harbin Institute of Technology, Harbin 150001, China

Received:2009-04-05 Published:2011-03-01

摘要/Abstract

摘要：

提出了一种消除载波频偏引起的多用户接入干扰的LMMSEPIC算法。首先，采用线性最小均方误差(LMMSE)来估计各用户的频偏干扰，然后根据这些估计值采用一种迭代的并行干扰消除(PIC)算法来消除多用户接入干扰。仿真结果表明，所采用的算法对载波频偏的估计精度较高，消除MUI干扰的效果明显。

关键词: 正交频分多址接入, 载波频率偏差, 并行干扰消除算法, 线性最小均方误差

Abstract:

A Linear Minimum Mean Square Error Parallel Interference Cancellation (LMMSEPIC) scheme was proposed to cancel Multiple Access Interference (MUI) in uplink Orthogonal FrequencyDivision Multiple Access (OFDMA). First, the Linear Minimum Mean Square Error (LMMSE) algorithm was derived to estimate the MUI. Then, the advantage of an iterative Parallel Interference Cancellation (

Key words: communication, orthogonal frequency division multiple access(OFDMA), carrier frequency offset(CFO), parallel interference cancellation(PIC), linear minimum mean square error(LMMSE)

中图分类号:

TN911.72

关庆阳, 赵洪林, 郭庆. 用基于LMMSE-PIC算法消除OFDMA上行链路多用户干扰[J]. 吉林大学学报(工学版), 2011, 41(02): 520-0524.

GUAN Qing-Yang, ZHAO Hong-Lin, GUO Qing. LMMSE-PIC algorithm for multiuser interference cancellation in uplink OFDMA communication system[J]. 吉林大学学报(工学版), 2011, 41(02): 520-0524.

参考文献

Metrics

Viewed

Full text

Abstract

Cited

Shared

Discussed