Title :
Bit error simulation of DQPSK for a slow frequency hopping CDMA system in mobile radio communications
Author :
Mortazavi, S.H. ; Beach, M.A. ; Jones, J.A. ; McGeehan, J.P.
Author_Institution :
Centre for Commun. Res., Bristol Univ., UK
Abstract :
Spread spectrum (SS) techniques seem to be an attractive alternative to conventional narrow-band modulation. In this paper a frequency hopping (FH) system model based on slow FH (SFH) is proposed. The hopping pattern is in a pseudo-random manner through a set of completely independent channels. The simulated results of the bit error rate (BER) performance of the system for π/4 DQPSK modulation in the presence of additive white Gaussian noise (AWGN) and Rayleigh fading, together with Bose-Chaudhuri-Hocquenghem (BCH) coding and interleaving are obtained. Consideration is given to the optimum interleaving size, and the system performance in presence of both synchronous and asynchronous interferers
Keywords :
BCH codes; Gaussian channels; Rayleigh channels; code division multiple access; differential phase shift keying; error statistics; frequency hop communication; interleaved codes; land mobile radio; quadrature phase shift keying; radiofrequency interference; π/4 DQPSK modulation; BCH coding; Bose-Chaudhuri-Hocquenghem coding; DQPSK; Rayleigh fading; additive white Gaussian noise; asynchronous interferers; bit error rate; bit error simulation; interleaving; mobile radio communications; slow frequency hopping CDMA system; spread spectrum; synchronous interferers; AWGN; Additive white noise; Bit error rate; Frequency; Interleaved codes; Modulation coding; Multiaccess communication; Narrowband; Rayleigh channels; Spread spectrum communication;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 1995. PIMRC'95. Wireless: Merging onto the Information Superhighway., Sixth IEEE International Symposium on
Conference_Location :
Toronto, Ont.
Print_ISBN :
0-7803-3002-1
DOI :
10.1109/PIMRC.1995.476880
