Title :
A Demodulation Technique for High Mobility OFDM Systems
Author :
Xuefei Wang ; Shan Gao ; Qinghua Zhong ; Han Zhang
Author_Institution :
Dept. Phys. & Telecommun. Eng., South China Normal Univ., Guangzhou, China
Abstract :
This paper presents a receive windowing (RW) based demodulation technique for mobile OFDM systems. With the aid of RWs, we firstly split an OFDM block into non-overlapped intervals, and then proposed a weighted combination to compensate for the channel time-variation across windowed blocks. The optimal design for RWs is considered with respect to maximizing the signal-to-interference plus noise ratio. Both theoretical analysis and simulation examples illustrate the superior performance of our method over the conventional demodulators.
Keywords :
OFDM modulation; demodulation; mobility management (mobile radio); radiofrequency interference; wireless channels; OFDM block; channel time-variation; high mobility OFDM systems; mobile orthogonal frequency-division multiplexing environment; nonoverlapped intervals; receive windowing based demodulation technique; signal-to-interference-plus-noise ratio maximization; weighted combination; windowed blocks; Complexity theory; Demodulation; Doppler effect; Interference; OFDM; Receivers; Signal to noise ratio; Demodulation; OFDM; high mobility; receive windowing;
Conference_Titel :
Cyber-Enabled Distributed Computing and Knowledge Discovery (CyberC), 2013 International Conference on
Conference_Location :
Beijing
DOI :
10.1109/CyberC.2013.81
