Spreading-code-dependent bit error rate and capacity analysis for finite asynchronous CDMA systems

摘要

Most CDMA systems serve only finite number of active users. Therefore, using Gaussian approximation to evaluate its performance is inappropriate. In such finite CDMA systems, the selection of spreading codes in of great importance because its performance is very munch spreading-code-dependent. In this paper, a new algorithm based on multiple variable Bernoulli process in introduced to evaluate bit error rate due to co-channel interference and thus the capacity of a CDMA systems.