Title :
Erlang capacity of multiclass CDMA cellular system
Author :
Castañeda-Camacho, Josefina ; Lara-Rodríguez, Domingo
Author_Institution :
Commun. Sect., CINVESTAV-IPN, Mexico City, Mexico
Abstract :
In this paper we evaluate the reverse link capacity of direct sequence-code division multiple access (DS-CDMA) cellular system supporting multiclass services. We present an approximated analysis of the Erlang capacity, considering that blocking in CDMA occurs when the interference level reaches a predetermined level above the background noise level of mainly thermal origin. We investigate the effect of important factors on capacity: (1) variation of the energy-to-interference Eb/I0 ratio according to propagation conditions for each multiservice user, (2) multiservice user activity, (3) multicode or multirate transmission, (4) handoff, (5) Poisson arrival process and (6) non uniform load in each cell
Keywords :
broadband networks; cellular radio; channel capacity; code division multiple access; radiofrequency interference; spread spectrum communication; DS-CDMA; Erlang capacity; direct sequence-code division multiple access; energy-to-interference ratio; interference level; load; multiclass CDMA cellular system; multicode transmission; multirate transmission; multiservice user; propagation conditions; reverse link capacity; user activity; Background noise; Base stations; Fading; Interference; Multiaccess communication; Power control; Power system modeling; Shadow mapping; Speech analysis; Traffic control;
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.2001.944900
