A WDFT-Based Channel Estimator with Non-adaptive Linear Prediction in Non-sample Spaced Channels

作者：Seo Jeong Wook^*; Jeon Won Gi; Paik Jong Ho; Lee Seok Pil; Kim Dong Ku

来源：IEICE Transactions on Fundamentals of Electronics Communications and Computer Sciences, 2010, E93A(7): 1375-1378.

DOI：10.1587/transfun.E93.A.1375

• OFDM
• DFT-based channel estimation
• linear prediction
• virtual carriers

This letter addresses the edge effect on a windowed discrete Fourier transform (WDFT)-based channel estimator for orthogonal frequency division multiplexing (OFDM) systems with virtual carriers in non-sample spaced channels and derives a sufficient condition to reduce the edge effect. Moreover, a modified WDFT-based channel estimator with multi-step linear prediction as an edge effect reduction technique is proposed. Simulation results show that it offers around 5 dB signal-to-noise ratio (SNR) gain over the conventional WDFT-based channel estimator at bit error rate (BER) of 10(-3).

• 出版日期2010-7