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Wireless Communications Principles and Practice, Second Edition by Theodore S. Rappaport

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Appendix E. Gaussian Approximations for Spread Spectrum CDMA

This Appendix contains detailed mathematical analysis which provides expressions for determining the average bit error rate for users in a single channel, CDMA, mobile radio system. Using the expressions provided in this appendix, it is possible to analyze CDMA systems for a wide range of interference conditions. These expressions may be used to reduce or eliminate the need for time intensive simulations of CDMA systems in some instances.

In a spread spectrum, Code Division Multiple Access (CDMA) system using binary signaling, the radio signal received at a base station from the kth mobile user (assuming no fading or multipath) is given by [Pur77]

Equation E.1. 

where bk(t) is the data ...

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