Title :
Differential modulated OFDM system for HF communications
Author :
Peng, Linning ; Pan, Jun ; Wu, Lenan
Author_Institution :
Sch. of Inf. Sci. & Eng., Southeast Univ., Nanjing, China
Abstract :
Signals in HF radio channels are suffered from the effect of delay spread, time-varying interference and additive Gaussian noise. The performances of two differential modulation methods FDDD and TDDD for OFDM system are analyzed in this paper. By analysis and simulations, the relationship of the subcarrier bandwidth and BER is demonstrated, which shows that the selection of optimal subcarrier bandwidth contributes largely to the performance of HF communications.
Keywords :
AWGN; OFDM modulation; error statistics; radiofrequency interference; wireless channels; BER; FDDD; HF communications; HF radio channels; TDDD; additive Gaussian noise; bit error rate; differential modulated OFDM system; frequency domain differential detection; high frequency communication; optimal subcarrier bandwidth; orthogonal frequency division multiplexing; time domain differential detection; time-varying interference; Bandwidth; Channel estimation; Delay effects; Digital video broadcasting; Fading; Gaussian noise; Intersymbol interference; Mobile communication; OFDM modulation; Performance analysis; Differential modulation; FDDD; HF communications; OFDM; TDDD;
Conference_Titel :
Wireless Communications & Signal Processing, 2009. WCSP 2009. International Conference on
Conference_Location :
Nanjing
Print_ISBN :
978-1-4244-4856-2
Electronic_ISBN :
978-1-4244-5668-0
DOI :
10.1109/WCSP.2009.5371752
