Title :
The effect of fading on the Erlang capacity of the IS-95 CDMA cellular system
Author :
Shen, Qiang ; Krzymien, Witold A.
Author_Institution :
Telecommun. Res. Lab., Alberta Univ., Edmonton, Alta., Canada
Abstract :
Reverse link Erlang capacity of the IS-95 CDMA cellular communication system is investigated analytically. Based on the observation of the impact of fading on the statistical properties of the multiple access interference, we include the fading channel multipath intensity profile in the Erlang capacity formula. In comparison with the previous work, a lower numerical value of the Erlang capacity is obtained for the current IS-95 system. The optimum multipath intensity profile to achieve the highest capacity is shown. A closed form expression for the required signal energy to interference power density ratio as a function of the number of transmission paths and receiver antennas is derived. To increase the system capacity, an artificial multipath transmission scheme is investigated using the new capacity formula
Keywords :
cellular radio; channel capacity; code division multiple access; diversity reception; fading; land mobile radio; multipath channels; radiofrequency interference; receiving antennas; statistical analysis; telecommunication links; Erlang capacity formula; IS-95 CDMA cellular system; artificial multipath transmission; closed form expression; closed loop power control; fading channel multipath intensity profile; fading effect; multiple access interference; optimum multipath intensity profile; receiver antennas; reverse link; signal energy to interference power density ratio; statistical properties; system capacity; transmission diversity performance; transmission paths; Base stations; Error analysis; Fading; Laboratories; Mobile communication; Multiaccess communication; Multiple access interference; Power control; Rayleigh channels; Signal processing;
Conference_Titel :
Communications, 1996. ICC '96, Conference Record, Converging Technologies for Tomorrow's Applications. 1996 IEEE International Conference on
Conference_Location :
Dallas, TX
Print_ISBN :
0-7803-3250-4
DOI :
10.1109/ICC.1996.535607
