Joint Adaptive Soft Frequency Reuse and Virtual Cell Power Control in Relay Enhanced Cellular System
Lu Cao, Tiankui Zhang, Chunyan Feng · 2009
This paper proposed a joint adaptive soft frequency reuse and virtual cell power control (JAP) algorithm for relay enhanced cellular (REC) system in LTE-A. The JAP algorithm allocates bandwidth to base station and relay node adaptively according to user distribution and target data rate and achieves frequency reuse factor be one among sectors. Furthermore, the JAP algorithm controls transmit power based on SIR-balance principle and adjusts power in "virtual cell", which can greatly mitigate co-channel interference among sectors. Simulation results show that the proposed algorithm can obtain both high average spectral efficiency and edge user throughput.