DocumentCode :
1739636
Title :
Power control for wireless packet voice with application to EDGE system
Author :
Chuang, Justin C I ; Leung, Kin K. ; Qiu, Xiaoxin ; Timiri, Shailender ; Wang, Li-Chun
Author_Institution :
AT&T Labs.-Res., Red Bank, NJ, USA
Volume :
1
fYear :
2000
fDate :
2000
Firstpage :
213
Abstract :
In this paper, using the EDGE system as an example, we apply a Kalman filter power control method based on interference tracking and prediction to packet voice services in wireless networks. Our results reveal that power control significantly improves the spectral efficiency by enabling 1/3 frequency reuse while maintaining a stringent requirement of 2% packet loss probability for a voice service. More specifically, for allocated spectrum of 1.8, 3.6 and 5.4 MHz, the 1/3 reuse with the Kalman power control can yield 102.5%, 49.5% and 32.5% improvement in spectral efficiency, respectively, over 3/9 reuse (regardless of whether or not power control is used). We also find that the Kalman method provides 20% additional spectral efficiency when compared with a traditional SIR power control method, and the former method is more robust than the latter for increased power update period. The protocol requirements for the implementation of the Kalman method in the EDGE system are also discussed
Keywords :
Kalman filters; cellular radio; filtering theory; frequency allocation; losses; packet radio networks; power control; probability; protocols; radiofrequency interference; telecommunication control; tracking filters; voice communication; 1.8 MHz; 3.6 MHz; 5.4 MHz; EDGE system; GSM; Kalman filter power control method; MF; SIR power control method; frequency reuse; interference prediction; interference tracking; packet loss probability; packet voice services; power control; power update period; protocol requirements; spectral efficiency; spectrum allocation; wireless packet voice; GSM; Interference; Iterative algorithms; Kalman filters; Performance gain; Power control; Power measurement; Protocols; Time division multiple access; Wireless networks;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Global Telecommunications Conference, 2000. GLOBECOM '00. IEEE
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-6451-1
Type :
conf
DOI :
10.1109/GLOCOM.2000.891757
Filename :
891757
Link To Document :
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