This paper addresses capacity estimation for cellular code-division multiple-access (CDMA) systems, assuming the IS-95 standard as a reference, Extending the analytical method from [6], we obtain a sequence of bounds on capacity, and then we introduce an accurate approximation to reduce computation complexity. The analysis accounts for interference internal and external to the reference cell, fading, shadowing, and imperfect power control. Outage probability is expressed in terms of the characteristic functions (cf's) of the interference and imperfect power control random variables (rv's), The interference contributions are computed on the basis of a Poisson distribution for the number of users in a lognormally shadowed channel. Results are provided for different channel conditions and are validated against Monte Carlo simulations, A comparison against previously published CDMA capacity estimates is carried out, aimed at clarifying some controversial issues. It is also confirmed that large system capacity is achievable under tight power control.

Corazza, G.E., De Maio, G., & Vatalaro, F. (1998). CDMA cellular systems performance with fading, shadowing, and imperfect power control. IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, 47(2), 450-459 [10.1109/25.669083].

CDMA cellular systems performance with fading, shadowing, and imperfect power control

CORAZZA, GIOVANNI EMANUELE;VATALARO, FRANCESCO
1998-05

Abstract

This paper addresses capacity estimation for cellular code-division multiple-access (CDMA) systems, assuming the IS-95 standard as a reference, Extending the analytical method from [6], we obtain a sequence of bounds on capacity, and then we introduce an accurate approximation to reduce computation complexity. The analysis accounts for interference internal and external to the reference cell, fading, shadowing, and imperfect power control. Outage probability is expressed in terms of the characteristic functions (cf's) of the interference and imperfect power control random variables (rv's), The interference contributions are computed on the basis of a Poisson distribution for the number of users in a lognormally shadowed channel. Results are provided for different channel conditions and are validated against Monte Carlo simulations, A comparison against previously published CDMA capacity estimates is carried out, aimed at clarifying some controversial issues. It is also confirmed that large system capacity is achievable under tight power control.
Pubblicato
Rilevanza internazionale
Articolo
Sì, ma tipo non specificato
Settore ING-INF/03 - Telecomunicazioni
eng
Cellular systems; CodEdivision multiple access; Lognormal channels; Outage probability; Power control; Spreadspectrum systems
http://ieeexplore.ieee.org
Corazza, G.E., De Maio, G., & Vatalaro, F. (1998). CDMA cellular systems performance with fading, shadowing, and imperfect power control. IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, 47(2), 450-459 [10.1109/25.669083].
Corazza, Ge; De Maio, G; Vatalaro, F
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2108/50549
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