Title :
A multistep power control algorithm for land mobile satellite with high dynamic channel
Author :
Li, Wenzhen ; Law, Choi Look ; Dubey, V.K.
Author_Institution :
Nanyang Technol. Univ., Singapore
Abstract :
In an LEO satellite CDMA system, power control can only be used to combat long-term signal loss due to long round trip delay, which calls for different considerations on power control algorithms. Based on the criteria of fast response, small overcompensation, oscillation-avoiding, and minimum power control error, the behavior of the transient response of fixed step power control, adaptive power control, and multistep power control are investigated and compared. A new multistep power control algorithm is proposed for LEO satellite communication systems suffering from high variation in the envelope of the received signal, i.e., high dynamics in slow fading
Keywords :
adaptive control; code division multiple access; error statistics; fading channels; land mobile radio; mobile satellite communication; multiuser channels; power control; telecommunication control; turbo codes; BER performance; Ka-band; LEO satellite CDMA system; LEO satellite communication systems; Rayleigh/lognormal distributed. channel; Rician distributed channel; adaptive power control; fast response; fixed step power control; high dynamic channel; land mobile satellite channel model; long round trip delay; long-term signal loss; minimum power control error; multistep power control algorithm; oscillation-avoidance; received signal envelope variation; slow fading; small overcompensation; transient response; turbo coding; Adaptive control; Delay; Error correction; Fading; Low earth orbit satellites; Multiaccess communication; Power control; Programmable control; Satellite communication; Transient response;
Conference_Titel :
Vehicular Technology Conference, 2001. VTC 2001 Spring. IEEE VTS 53rd
Conference_Location :
Rhodes
Print_ISBN :
0-7803-6728-6
DOI :
10.1109/VETECS.2001.944145
