Title :
Joint Adaptive Soft Frequency Reuse and Virtual Cell Power Control in Relay Enhanced Cellular System
Author :
Cao, Lu ; Zhang, Tiankui ; Feng, Chunyan
Author_Institution :
Sch. of Inf. & Commun. Eng., Beijing Univ. of Posts & Telecommun., Beijing, China
Abstract :
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.
Keywords :
bandwidth allocation; cellular radio; cochannel interference; frequency allocation; interference suppression; power control; JAP algorithm; LTE-A; REC system; SIR-balance principle; bandwidth allocation; base station; co-channel interference; frequency reuse factor; joint adaptive soft frequency reuse; relay enhanced cellular system; relay node; spectral efficiency; target data rate; virtual cell power control; Adaptive control; Bandwidth; Base stations; Frequency; Interchannel interference; Power control; Power system relaying; Programmable control; Radio spectrum management; Throughput;
Conference_Titel :
Computer Network and Multimedia Technology, 2009. CNMT 2009. International Symposium on
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-5272-9
DOI :
10.1109/CNMT.2009.5374789
