Error rate analysis of DCPSK over generalized fading channels

• Published in: 2004 IEEE Wireless Communications and Networking Conference Vol. 1; pp. 65 - 70 Vol.1
• Main Authors: Smadi, M.A., Prabhu, V.K.
• Format: Conference Proceeding
• Language: English
• Published: Piscataway NJ IEEE 2004
• Subjects: Applied sciences; Digital modulation; Diversity reception; Error analysis; Exact sciences and technology; Fading; Fourier series; Information, signal and communications theory; Modulation, demodulation; Performance gain; Phase modulation; Phase shift keying; Probability density function; Random variables; Signal and communications theory; Systems, networks and services of telecommunications; Telecommunications; Telecommunications and information theory; Transmission and modulation (techniques and equipments); Fading channels; Performance evaluation; Approximate method; Error estimation; Wireless telecommunication; Rayleigh channels; Error rate; Binary phase shift keying; Fourier series; Independent variable; Quadrature phase shift keying; Statistical method; Phase shift keying; Digital system; Accuracy; Diversity combining; Simulation; Probability density function; Differential phase shift keying; Random variable
• ISBN: 9780780383449; 0780383443
• ISSN: 1525-3511
• DOI: 10.1109/WCNC.2004.1311519

Binary and quaternary -differential coherent phase-shift keying (DBPSK, DQPSK) are widely used modulations in digital wireless systems. However, a simple expression for the probability density function (pdf) of the decision statistic and the error rate performance of such systems under post-detection equal gain combining (KGC) and generalized fading channels are not currently available in the literature. This paper presents a discussion of these subjects in detail. Our analytic study is based on a convergent infinite series for the sum of independent random variables that has been derived using Fourier series approximation method. Generalized fading channels including Rayleigh, Ricean, and Nakagami-m are investigated. The channels are assumed to be independent, frequency-nonselective, and slowly varying. The accuracy of our results is verified through simulation.