標題: | Blind SNR Estimation with Coherent Function for OFDM Systems |
作者: | Chin, Wen-Long Chen, Sau-Gee 電子工程學系及電子研究所 Department of Electronics Engineering and Institute of Electronics |
關鍵字: | OFDM;SNR estimation |
公開日期: | 1-十一月-2008 |
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. |
URI: | http://dx.doi.org/10.1093/ietcom/e91-b.11.3753 http://hdl.handle.net/11536/8216 |
ISSN: | 0916-8516 |
DOI: | 10.1093/ietcom/e91-b.11.3753 |
期刊: | IEICE TRANSACTIONS ON COMMUNICATIONS |
Volume: | E91B |
Issue: | 11 |
起始頁: | 3753 |
結束頁: | 3756 |
顯示於類別: | 期刊論文 |