A Channel Estimation Algorithm for OFDM Based on PCC Training Symbols

doi:10.13190/jbupt.200704.37.tangt

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2007, Vol. 30 ›› Issue (4): 37-40.doi: 10.13190/jbupt.200704.37.tangt

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A Channel Estimation Algorithm for OFDM Based on PCC Training Symbols

TANG Tian,JIANG Jun,ZHANG Ping

(School of Telecommunication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China)

Received:2006-06-18 Revised:2007-04-16 Online:2007-08-30 Published:2007-08-30
Contact: TANG Tian

Abstract

Abstract:

The leakage of channel impulse response (CIR) in channel estimation for the orthogonal frequency division multiplexing (OFDM) systems is analyzed. A channel estimation algorithm in time domain is newly proposed. To overcome the leakage of CIR, the frequency guard bands are reduced by using the polynomial cancellation coding (PCC) training symbols .The symbols have fast spectral rolloff. Comparison has been done between the proposed algorithm and the existing channel estimation algorithms. Simulation results show the decreasing of channel estimation mean square (MSE) and the improvement of bit error rate (BER) performance by the proposed algorithm.

Key words: OFDM, channel estimation, polynomial cancellation coding

CLC Number:

TN929.5

TANG Tian,JIANG Jun,ZHANG Ping. A Channel Estimation Algorithm for OFDM Based on PCC Training Symbols[J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2007, 30(4): 37-40.

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A Channel Estimation Algorithm for OFDM Based on PCC Training Symbols

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