Maximum-Delay-Spread Aided Channel Estimator for OFDM systems
An improved channel estimator with maximum-delay-spread measurement for OFDM systems is proposed by exploiting the inherent correlation between the cyclic prefix and port of the received OFDM signal. This scheme make use of real time measured size of inter-symbol interference (ISI) free window to estimate the maximum delay spread of channel, then a transform domain channel estimator is adopted to further reduce the noise variance. Due to the ISI-free window can be estimated before the application of FFT to the received signal, it is a parallel processing, and very suitable for the practical systems. Simulation result demonstrated that the proposed method can track the variation of delay spread of wireless channel, and improve the MSE of channel estimation significantly.
OFDM maximum-delay-spread channel estimation correlation
Zhigang Zhou Xiaodong Zhang Zhiyong Bu
Shanghai Research Center for Wireless Communications (SHRCWC), Shanghai 200050, China Shanghai Institute of Microsystem and Information Technology (SIMIT), Chinese Academy of Sciences (C
国际会议
武汉
英文
237-240
2005-09-23（万方平台首次上网日期，不代表论文的发表时间）