Channel estimation for OFDM-based WLANs in the presence of Wiener phase noise and residual frequency offset

被引：3
|
作者：
Kim, Yong-Hwa [1 ]
Lee, Jong-Ho [1 ]
Kim, Seong-Cheol [1 ]
机构：
[1] Seoul Natl Univ, Inst New Media & Commun, Sch Elect Engn & Comp Sci, Seoul, South Korea
来源：
IEICE TRANSACTIONS ON COMMUNICATIONS | 2006年 / E89B卷 / 05期
关键词：
orthogonal frequency-division multiplexing (OFDM); channel estimation; phase noise (PHN); residual frequency offset (RFO); wireless local area networks (WLANs);
D O I：
10.1093/ietcom/e89-b.5.1709
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In orthogonal frequency-division multiplexing (OFDM)based wireless local area networks (WLANs), phase noise (PHN) and residual frequency offset (RFO) can cause the common phase error (CPE) and the inter-camer interferences (10), which seriously degrade the performance of systems. In this letter, we propose a combined pilot symbol assisted and decision-directed channel estimation scheme based on the, leasts-squares (LS) and the maximum-likelihood (ML) algorithms. Simulation results present that the proposed scheme significantly improves the performance of OFDM-based WLANs.
引用
收藏
页码：1709 / 1712
页数：4
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