DocumentCode :
819695
Title :
Error statistics for average power measurements in wireless communication systems
Author :
Wei, Shuangqing ; Goeckel, Dennis L.
Author_Institution :
Dept. of Electr. & Comput. Eng., Massachusetts Univ., Amherst, MA, USA
Volume :
50
Issue :
9
fYear :
2002
fDate :
9/1/2002 12:00:00 AM
Firstpage :
1535
Lastpage :
1546
Abstract :
The measurement of the average received power is essential for power control and dynamic channel allocation in wireless communication systems. However, due to the effects of multipath fading and additive noise inherent to the wireless channel, there can be significant errors in such measurements. In this paper, the error statistics for average power measurements are considered; in particular, the probability distribution of the value of the average received power at the time of interest conditioned on an outdated measurement is obtained. The resulting expression should have high utility in the analysis of wireless communication systems. However, in this paper, the design of power control algorithms that minimize the average transmitted power required to achieve a desired outage probability for the link is considered. A number of novel power control algorithms based on various models for the error in the average power measurement are derived. Numerical results indicate that power control algorithms based on the accurate expression derived in this paper can demonstrate significant gains over those based on previous approximate models.
Keywords :
Rayleigh channels; channel allocation; error statistics; land mobile radio; multipath channels; power control; telecommunication control; additive noise; average power measurements; average received power; dynamic channel allocation; error statistics; multipath fading; outage probability; outdated measurement; power control; probability distribution; wireless communication systems; Additive noise; Channel allocation; Error analysis; Fading; Noise measurement; Particle measurements; Power control; Power measurement; Probability distribution; Wireless communication;
fLanguage :
English
Journal_Title :
Communications, IEEE Transactions on
Publisher :
ieee
ISSN :
0090-6778
Type :
jour
DOI :
10.1109/TCOMM.2002.802569
Filename :
1033016
Link To Document :
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