Two-stage maximum likelihood estimation (TSMLE) for MT-CDMA signals in the indoor environment

Authors:
Quazi Mehbubar Rahman;Abu B. Sesay;Mostafa Hefnawi
Affiliations:
Department of Electrical & Computer Engineering, Queen's University, Kingston, ON, Canada;Department of Electrical & Computer Engineering, University of Calgary, AB, Canada;Department of Electrical & Computer Engineering, Royal Military College of Canada, ON, Canada
Venue:
EURASIP Journal on Wireless Communications and Networking - Special issue on innovative signal transmission and detection techniques for next generation cellular CDMA systems
Year:
2004

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Abstract

This paper proposes a two-stage maximum likelihood estimation (TSMLE) technique suited for multitone code division multiple access (MT-CDMA) system. Here, an analytical framework is presented in the indoor environment for determining the average bit error rate (BER) of the system, over Rayleigh and Ricean fading channels. The analytical model is derived for quadrature phase shift keying (QPSK) modulation technique by taking into account the number of tones, signal bandwidth (BW), bit rate, and transmission power. Numerical results are presented to validate the analysis, and to justify the approximations made therein. Moreover, these results are shown to agree completely with those obtained by simulation.