A Low-complexity Grouped MMSE Interference Cancellation Scheme for OFDMA Uplink Systems with Carrier Frequency Offsets

被引：0
|
作者：
Fa, Rui [1 ]
Zhang, Li [1 ]
Ramirez, Raymundo [1 ]
机构：
[1] Univ Leeds, Sch Elect & Elect Engn, Leeds LS2 9JT, W Yorkshire, England
来源：
2011 IEEE WIRELESS COMMUNICATIONS AND NETWORKING CONFERENCE (WCNC) | 2011年
基金：
英国工程与自然科学研究理事会;
关键词：
Orthogonal frequency division multiple-access (OFDMA); interference cancellation (IC); multiuser interference (MUI); carrier frequency offset (CFO); MULTIUSER INTERFERENCE; SYNCHRONIZATION; COMPENSATION;
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：
In this paper, we consider interference cancellation (IC) schemes for uplink orthogonal frequency division multiple-access (OFDMA) systems with carrier frequency offsets (CFOs). To improve the detection performance without increasing the computational complexity of the detector, we propose a low-complexity multi-stage interference cancellation (MIC) scheme based on a grouped minimum mean squared error (GMMSE) algorithm. In the proposed scheme, a novel IC strategy is employed. The simulation results show that the proposed IC scheme outperforms other existing schemes with considerable low complexity in both subband carrier assignment scheme (CAS) and generalized CAS scenarios.
引用
收藏
页码：1602 / 1606
页数：5
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