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Optimal radio capacity for an adaptive hybrid DS/FFH CDMA system in rayleigh fading

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1 Author(s)
P. Varzakas ; Lab. of Electron., Athens Univ.

An adaptive hybrid direct-sequence/fast frequency hopping code-division multiple-access (DS/FFH-CDMA) system operating in a Rayleigh fading environment is considered and its spectral efficiency, expressed in (bits/sec/Hz), is estimated in terms of the theoretically achievable average channel capacity (in the sense of information theory) per user. The analysis covers the operation over a broadcast single-cell time-varying system and leads to a simple closed-form expression for the optimal number of simultaneously active users based on the maximization of the achieved spectral efficiency

Published in:

First IEEE International Symposium on New Frontiers in Dynamic Spectrum Access Networks, 2005. DySPAN 2005.

Date of Conference:

8-11 Nov. 2005