A Low Complexity Multiuser Interference Compensation Scheme for OFDMA Uplink

被引：0
|
作者：
Zhang, Yang [1 ]
Li, Jiandong [1 ]
Pang, Lihua [1 ]
Liu, Qin [1 ]
机构：
[1] Xidian Univ, State Key Lab Integrated Serv Networks, Xian 710071, Peoples R China
来源：
2012 IEEE 75TH VEHICULAR TECHNOLOGY CONFERENCE (VTC SPRING) | 2012年
关键词：
CARRIER FREQUENCY OFFSET; SYNCHRONIZATION; CANCELLATION; SYSTEMS; CHANNELS; RECEIVER;
D O I：
暂无
中图分类号：
TN [电子技术、通信技术];
学科分类号：
0809 ;
摘要：
This paper investigates the multiuser interference mitigation for the uplink of an orthogonal frequency division multiple access system in a doubly selective fading channel. The proposed algorithm squeezes the interference of subcarrier k into 2 tau + 1 neighboring subcarriers by preprocessing the received signal and yields a banded structure interference matrix. Specifically, the value of tau mainly depends on the carrier frequency offsets and determines the squeezing depth which in turn influences the receiver implementation complexity. Simulation results show that the bit error rate performance of our proposed algorithm approaches the existing full length minimum mean square error equalizer with a significant reduction on complexity.
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页数：6
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