DocumentCode :
1334782
Title :
Design of power control mechanisms with PCM realization for the uplink of a DS-CDMA cellular mobile radio system
Author :
Chang, Chung-Ju ; Lee, Jeh-Ho ; Ren, Fang-Ching
Author_Institution :
Dept. of Commun. Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan
Volume :
45
Issue :
3
fYear :
1996
fDate :
8/1/1996 12:00:00 AM
Firstpage :
522
Lastpage :
530
Abstract :
Power control (PC) is an important issue in a direct sequence-code division multiple access (DS-CDMA) cellular mobile radio system. Higher link performance and greater system capacity cannot be achieved unless an appropriate PC mechanism is employed. In previous research, a delta-modulation (DM) realization of strength-based and SIR-based PC mechanisms for uplink communication has been studied by simulation. In order to obtain higher PC trackability, we study a pulse-code-modulation (PCM) realization of the above two PC mechanisms for the uplink of a DS-CDMA cellular mobile radio system. The simulation results presented indicate that the PC mechanisms with PCM realization for the uplink can achieve a lower outage probability and thus higher link performance than the PC mechanisms with DM realization. We also obtain optimal design parameters such as the stepsize and the control mode for the two PCM PC mechanisms. In addition, we compare the two PCM PC mechanisms in terms of their outage probability and stability and find that the strength-based mechanism has a higher outage probability but greater stability than the SIR-based mechanism
Keywords :
cellular radio; channel capacity; code division multiple access; power control; probability; pseudonoise codes; pulse code modulation; radio links; spread spectrum communication; telecommunication control; telecommunication network reliability; DS-CDMA cellular mobile radio system; PCM PC mechanisms; SIR based power control; control mode; delta modulation; direct sequence-code division multiple access; link performance; optimal design parameters; outage probability; pulse code modulation; simulation results; stability; stepsize; strength based power control; system capacity; uplink; Delta modulation; Frequency division multiaccess; Land mobile radio; Multiaccess communication; Phase change materials; Power control; Radio control; Radio link; Stability; Time division multiple access;
fLanguage :
English
Journal_Title :
Vehicular Technology, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9545
Type :
jour
DOI :
10.1109/25.533767
Filename :
533767
Link To Document :
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