Effects of multipath and base-station antenna arrays on uplink capacity of cellular CDMA

Author

Naguib, Ayman F. ; Paulraj, Arogyaswami

Author_Institution

Inf. Syst. Lab., Stanford Univ., CA, USA

fYear

1994

fDate

28 Nov- 2 Dec 1994

Firstpage

395

Abstract

We evaluate the uplink capacity of a DS-CDMA cellular system using DPSK modulation with antenna array at base-station. A 2D-RAKE receiver structure with predetection equal gain combining is used for demodulation. We study both the outage and blocking probabilities of the system as a function of the cell loading and the number of array elements. Assuming perfect instantaneous power control and considering the effects of shadowing, multipath fading, path loss, and voice activity, we evaluate the system capacity in terms of the number of users per cell. Simulation results are also presented

Keywords

antenna arrays; cellular radio; channel capacity; code division multiple access; demodulation; differential phase shift keying; fading; land mobile radio; multipath channels; power control; probability; pseudonoise codes; radio links; radio receivers; spread spectrum communication; telecommunication control; 2D-RAKE receiver; CDMA cellular system; DPSK modulation; DS-CDMA; array elements; base-station antenna arrays; blocking probability; cell loading; demodulation; instantaneous power control; multipath fading; outage probability; path loss; predetection equal gain combining; shadowing; simulation results; system capacity; uplink capacity; voice activity; Antenna arrays; Differential quadrature phase shift keying; Diversity reception; Fading; Frequency; Multiaccess communication; RAKE receivers; Receiving antennas; System performance; Time division multiple access;

fLanguage

English

Publisher

ieee

Conference_Titel

Global Telecommunications Conference, 1994. GLOBECOM '94. Communications: The Global Bridge., IEEE

Conference_Location

San Francisco, CA

Print_ISBN

0-7803-1820-X

Type

conf

DOI

10.1109/GLOCOM.1994.513551

Filename

513551