Improved IDCA Algorithm for TD-SCDMA Intensive Traffic Flow Scenes

Abstract

With the continuous development of TD-SCDMA(Time Division -Synchronous Code Division MultipleAccess) network, has begun a high-traffic areas; intensive traffic flow scenes, network configuration, with high frequency multiplexing, interference problems are more prominent; there will be residential uplink interference serious, KPI(Key Performance Indicator)have worsened and volatile, poor perceived by the user; how to reduce interference and optimize the KPI targets to enhance the user perception is particularly important, currently, in the interference suppression algorithms, IDCA(Intelligence Dynamic Channel Allocation) algorithm is a more sophisticated algorithms, but in the intensive traffic flow scenes, the IDCA algorithm for interference suppression aspects of the effect is less pronounced. This paper presents a sorting method, before the IDCA algorithm for carrier sorting, based on frequency multiplexing degrees and comprehensive consideration of user level. The method, optimizes the carrier sorting method of IDCA algorithm, avoids the occurrence of the same frequency at the same time gap as much as possible, and reduces interference within the system. Therefore, it is suitable for the intensive traffic flow scenes..