Effects of multipath and antenna diversity on the uplink capacity of a CDMA wireless system

Author

Jalali, A. ; Mermelstein, P.

Author_Institution

Bell-Northern Res., Verdun, Que., Canada

fYear

1993

fDate

29 Nov-2 Dec 1993

Firstpage

1660

Abstract

The uplink (mobile-to-base) capacity of microcellular CDMA system which employs noncoherent reception, 1/3 convolutional codes and 64-ary orthogonal signaling, and closed-loop power control is estimated. System bandwidths of 1.25 and 10 MHz are considered. The system capacity, the number of simultaneous users per cell, is estimated taking into account the effects of the fast power control algorithm on the multiuser interference, as well as the effects of path loss and shadow fading. Capacity is obtained as a function of path loss exponent, order of antenna and multipath diversity, and system bandwidth. Path loss exponent is seen to have a major impact on system capacity. Effects of multipath diversity on the system capacity are studied for the particular system under consideration

Keywords

cellular radio; code division multiple access; convolutional codes; diversity reception; fading; mobile antennas; mobile radio systems; personal communication networks; power supplies to apparatus; radio reception; radiofrequency interference; spread spectrum communication; telecommunication channels; telecommunication signalling; 1.25 MHz; 1/3 convolutional codes; 10 MHz; 64-ary orthogonal signaling; CDMA wireless system; antenna diversity; closed-loop power control; microcellular CDMA system; mobile-to-base capacity; multipath diversity; multiuser interference; noncoherent reception; path loss; path loss exponent; shadow fading; system bandwidths; system capacity; uplink capacity; Bandwidth; Convolutional codes; Diversity reception; Fading; Frequency; Interference; Multiaccess communication; Power control; Power system modeling; Spread spectrum communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Global Telecommunications Conference, 1993, including a Communications Theory Mini-Conference. Technical Program Conference Record, IEEE in Houston. GLOBECOM '93., IEEE

Conference_Location

Houston, TX

Print_ISBN

0-7803-0917-0

Type

conf

DOI

10.1109/GLOCOM.1993.318351

Filename

318351