Title :
Performance of Rake receiver assisted adaptive-modulation based CDMA over frequency selective slow Rayleigh fading channels
Author :
Choi, B.J. ; Münster, M. ; Yang, L.-L. ; Hanzo, L.
Author_Institution :
Dept. of Electron. & Comput. Sci., Southampton Univ., UK
fDate :
2/15/2001 12:00:00 AM
Abstract :
A closed form expression of the average bit error rate (BER) is derived for a Rake receiver based adaptive-modulation scheme over frequency selective slow Rayleigh fading channels. Multidimensional minimisation of a cost function based on the derived closed form BER expression is performed to optimise the switching levels for a constant BER adaptive modulation system
Keywords :
Rayleigh channels; adaptive modulation; code division multiple access; indoor radio; modems; quadrature amplitude modulation; radio receivers; Rake receiver based scheme; adaptive QAM; adaptive modems; adaptive-modulation based CDMA; adaptive-modulation scheme; average bit error rate; closed form expression; cost function; frequency selective slow Rayleigh fading channels; indoor wireless; multidimensional minimisation; switching levels optimisation;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20010176
