A Simple Method of BER Calculation in DPSK/OFDM Systems over Fading Channels

Fumihito SASAMORI  Shiro HANDA  Shinjiro OSHITA  

Publication
IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E88-A   No.1   pp.366-373
Publication Date: 2005/01/01
Online ISSN: 
DOI: 10.1093/ietfec/e88-a.1.366
Print ISSN: 0916-8508
Type of Manuscript: PAPER
Category: Mobile Information Network and Personal Communications
Keyword: 
DPSK/OFDM system,  Doppler frequency shift,  delay spread,  bit error rate,  closed-form equation,  

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Summary: 
In orthogonal frequency division multiplexing (OFDM) systems with differential phase shift keying (DPSK), it is possible to apply differential modulation either in the time or frequency domain depending on the condition of fading channels, such as the Doppler frequency shift and the delay spread. This paper proposes a simple calculation method, that is, an approximate closed-form equation of the bit error rate (BER) in DPSK/OFDM systems mentioned above over both time and frequency selective Rician fading channels. The validity of the proposed method is demonstrated by the fact that the BER performances given by the derived equation coincide with those by Monte Carlo simulation.