SIMULATION STUDY OF HYBRID CHANNELS ASSIGNMENT METHOD FOR WCDMA SYSTEMS

摘要

The paper deals with elaborated code sequences management method for DS-CDMA system. The Hybrid Channels Assignment (HCA) method presented here combines two schemes, e.g. fixed and dynamic channel assignment. Channels could be assigned by calculating of minimal correlation factors at the time of assignment, with regard to each channel in the interference area or by sharing the channels into separate groups. In our case, cellular network is divided into three-cell groups, similarly to the satirized systems. Dynamic channels are allocated based on minimization of cost function defined for each available channel. A simulation carried out by the authors, confirmed high efficiency of HCA for DS-CDMA cellular systems. Both calls and handover blocking probabilities were selected as the basic measures of the QoS.