Title :
Power control for CDMA macro-micro cellular system
Author :
Shin, Seung Hoon ; Kwak, Kyung Sup
Author_Institution :
Dept. of Electr. Eng., Inha Univ., Inchon, South Korea
Abstract :
The hierarchical cell structure is needed for different requirements: large cells guarantee continuous coverage, while small cells are necessary to achieve good spectrum efficiency and high capacity. In this paper, the CDMA system in macro/micro cell structure is investigated. We propose an adaptive scheme of controlling the cell size according to a time-varying traffic distribution in a macro/micro overlaid cell environment. This aims to bring the communications quality in both the macro-cell and micro-cell to a target quality level. Simulation results show that the proposed scheme effectively controls the time-varying traffic fluctuations and provides an enhanced performance
Keywords :
adaptive control; channel capacity; code division multiple access; microcellular radio; multiuser channels; power control; radiofrequency interference; spread spectrum communication; telecommunication control; telecommunication traffic; CDMA macro-micro cellular system; DS/CDMA; SIR; adaptive cell size control; communications quality; continuous coverage; hierarchical cell structure; high capacity; macro/micro cell structure; macro/micro overlaid cell environment; performance; power control; signal to interference ratio; simulation results; spectrum efficiency; time-varying traffic distribution; Adaptive control; Base stations; Communication system traffic control; Interference; Mobile communication; Multiaccess communication; Power control; Programmable control; Size control; Traffic control;
Conference_Titel :
Vehicular Technology Conference Proceedings, 2000. VTC 2000-Spring Tokyo. 2000 IEEE 51st
Conference_Location :
Tokyo
Print_ISBN :
0-7803-5718-3
DOI :
10.1109/VETECS.2000.851649
