Blind SNR Estimation with Coherent Function for OFDM Systems

被引：1

作者：

Chin, Wen-Long ^{[1
,2
]}

Chen, Sau-Gee ^{[1
,2
]}

机构：

[1] Natl Chiao Tung Univ, Dept Elect Engn, Hsinchu 30050, Taiwan

[2] Natl Chiao Tung Univ, Inst Elect, Hsinchu 30050, Taiwan

来源：

IEICE TRANSACTIONS ON COMMUNICATIONS | 2008年 / E91B卷 / 11期

关键词：

OFDM; SNR estimation;

D O I：

10.1093/ietcom/e91-b.11.3753

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 OFDM receivers, an accurate signal-to-noise ratio (SNR) estimation is desirable for all sorts of operations involved in high-performance baseband demodulation. In this work. conventional SNR estimation techniques are investigated. Next, a blind SNR estimation scheme for the phase-shift keying (PSK) signals based on the coherence function is proposed. The proposed method is non-data-aided (NDA) and hence bandwidth-efficient. Simulations confirm that the proposed method has the best performance from moderate to high SNRs both in AWGN and dispersive channels: however. the proposed method has worse performance when SNRs are low.

引用

页码：3753 / 3756

页数：4

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