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

页码：1709 / 1712

页数：4

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