Title :
A novel transmitting diversity scheme for synchronization of OFDM systems
Author :
Zhang, Jianhua ; Guangyi, Liu
Author_Institution :
Beijing Univ. of Posts & Telecommun., Beijing
Abstract :
Synchronization is important in order to correctly recover information for multi-antenna orthogonal frequency division multiplexing (OFDM) system. In this paper a novel transmitting diversity scheme named as maximal channel power (MaxCP) is proposed. Specifically the channel state information (CSI) is feedback to transmitter firstly and then only one of transmit antennas with the highest channel power is selected. Thus synchronization sequence is only transmitted at the selected antenna. By simulation, it is found that the proposed MaxCP scheme has the better performance than conventional maximal ratio combining (MRC) scheme, in both timing and frequency synchronization for OFDM systems.
Keywords :
OFDM modulation; antenna arrays; diversity reception; multifrequency antennas; synchronisation; channel state information; frequency synchronization; maximal channel power; maximal ratio combining scheme; multi-antenna OFDM systems; novel transmitting diversity scheme; orthogonal frequency division multiplexing system; timing synchronization; transmitting diversity scheme; Diversity reception; Frequency domain analysis; Frequency estimation; Frequency synchronization; MIMO; OFDM; Receiving antennas; Timing; Transmitters; Transmitting antennas; Frequency Synchronization; OFDM; Selection Transmitting; Timing Synchronization;
Conference_Titel :
Communications and Networking in China, 2008. ChinaCom 2008. Third International Conference on
Conference_Location :
Hangzhou
Print_ISBN :
978-1-4244-2373-6
Electronic_ISBN :
978-1-4244-2374-3
DOI :
10.1109/CHINACOM.2008.4685095
