ABSTRACT

In the authors' study, Eb/N0 was considered since it is more commonly used. In this study, a centralized resource management in direct sequence wideband code division multiple access (DS-WCDMA) systems was considered. Its implementation steps were as follows: At the beginning of a time slot, the resource management center received the data from the database, including the measured link gain, the requested media type, and the identification number of the assigned base station of each connecting user. This chapter discusses that an optimization problem is formulated so that resources, including transmission powers and transmission rates, are optimally allocated to all connecting users. The objectives are to minimize the total transmission power and maximize the total transmission rate of all users simultaneously. The design of the chromosome is depicted; the transmission power and transmission rate of each connecting user are encoded in floating point and considered as the genes of chromosomes.