Title :
On pilot pattern design for PSAM-OFDM system
Author :
Zhang, Wei ; Xia, Xiang-Gen ; Ching, P.C.
Author_Institution :
Dept. of Electron. Eng., Chinese Univ. of Hong Kong, China
Abstract :
Pilot symbol assisted modulation (PSAM) of subcarriers is an attractive scheme for high data-rate OFDM transmission systems and has been widely used in broadcasting systems like DVB-T. In this paper, a new and simple pilot pattern for PSAM-OFDM system operated in the mobile communication environment is proposed and analyzed in terms of its bit error rate. Analytical and simulation results show that the proposed clustered pilot pattern for OFDM channel estimation gives a better performance than the conventional equally spaced pilot pattern in fading channel, yet without sacrificing the bandwidth efficiency.
Keywords :
OFDM modulation; channel estimation; fading channels; least mean squares methods; mobile communication; signal detection; DVB-T; OFDM channel estimation; OFDM transmission systems; PSAM-OFDM system; bandwidth efficiency; bit error rate; broadcasting systems; clustered pilot pattern; fading channel; mobile communication environment; pilot pattern design; pilot symbol assisted modulation; subcarriers; Analytical models; Bandwidth; Bit error rate; Channel estimation; Digital video broadcasting; Fading; Mobile communication; OFDM modulation; Pattern analysis; Performance analysis;
Conference_Titel :
Circuits and Systems, 2004. ISCAS '04. Proceedings of the 2004 International Symposium on
Print_ISBN :
0-7803-8251-X
DOI :
10.1109/ISCAS.2004.1329599
