Adaptive service rate for soft handoff cellular CDMA systems over Nakagami-m fading channels

Author

Tsai, Tsung-Hua ; Wu, Tsan-Ming

Author_Institution

Dept. of Electr. Eng., Chung Yuan Christian Univ., Chung-Li

fYear

2008

fDate

14-16 April 2008

Firstpage

1

Lastpage

4

Abstract

A novel efficient call admission control (CAC) scheme for the soft handoff mechanism in cellular code-division multiple-access (CDMA) systems over Nakagami-m fading channels with the impact of the Doppler frequency is proposed. Equipped with a soft handoff queue, a continuous-time Markov chain (CTMC) model for the CAC which is modified by an adaptive service rate algorithm against the Doppler frequency degradation is discussed. Computer calculations for the new call blocking probability and the handoff dropping probability have been evaluated to confirm our new design.

Keywords

Markov processes; Nakagami channels; cellular radio; code division multiple access; telecommunication congestion control; Doppler frequency degradation; Nakagami-m fading channels; adaptive service rate; call blocking probability; cellular code-division multiple-access systems; continuous-time Markov chain model; efficient call admission control scheme; handoff dropping probability; soft handoff cellular CDMA systems; Adaptive control; Call admission control; Degradation; Fading; Frequency conversion; Frequency estimation; Multiaccess communication; Probability; Programmable control; Traffic control; Cellular CDMA; Doppler frequency; Nakagami-m; fading channels; soft handoff;

fLanguage

English

Publisher

ieee

Conference_Titel

Consumer Electronics, 2008. ISCE 2008. IEEE International Symposium on

Conference_Location

Vilamoura

Print_ISBN

978-1-4244-2422-1

Electronic_ISBN

978-1-4244-2422-1

Type

conf

DOI

10.1109/ISCE.2008.4559520

Filename

4559520