Abstract :
A General SER Formula for an OFDM System With MDPSK in Frequency Domain Over Rayleigh Fading Channels Kun Zhong, Tjeng Thiang Thjung, and Fumiyuki Adachi A closed form formula for symbol-error rate (SER) of an orthogonal frequency-division multiplexing (OFDM) system with MDPSK in the frequency domain over Rayleigh fading channels is obtained. It is found that, by MDPSK in the frequency domain, identical SERs can be achieved on all subcarriers. However, both time and frequency dispersion in the channel will introduce error floors. A comparison between OFDM-MDPSK in the frequency domain, and that in time domain, reveals that the former system offers superior SER performance in a fast-fading environment, while the latter performs better if the channel is mainly frequency selective. Moreover, the former system has lower implementation complexity.
