Title :
Effects of slow fading SIR errors on CDMA capacity
Author :
Wu, Qiang ; Wu, Wei-Ling ; Zhou, Jiong-Pan
Author_Institution :
Dept. of Inf. Eng., Beijing Univ. of Posts & Telecommun., China
Abstract :
With fast close-loop power control, slowly varying power control errors, which cannot be eliminated by coding and interleaving, have been found lognormally distributed in the received SIR and may result in great performance reduction. In this paper, a closed-form formula is derived to show an important fact that 1 dB standard deviation of the received SIR corresponds to 2.3 dB reduction of the CDMA reverse link capacity
Keywords :
cellular radio; channel capacity; closed loop systems; code division multiple access; fading; land mobile radio; log normal distribution; power control; pseudonoise codes; radio links; radiofrequency interference; spread spectrum communication; telecommunication control; CDMA reverse link capacity; DS/CDMA cellular radio system; closed-form formula; coding; fast close-loop power control; interleaving; lognormal distribution; performance reduction; power control errors; received SIR; slow fading SIR errors; standard deviation; Capacity planning; Eigenvalues and eigenfunctions; Fading; Multiaccess communication; Power control; Probability; Rayleigh channels; Statistics; Steady-state; Upper bound;
Conference_Titel :
Vehicular Technology Conference, 1997, IEEE 47th
Conference_Location :
Phoenix, AZ
Print_ISBN :
0-7803-3659-3
DOI :
10.1109/VETEC.1997.606018
