Performance analysis of CDMA with imperfect power control

Author

Cameron, Rick ; Woerner, B.

Author_Institution

Bradley Dept. of Electr. Eng., Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA

Volume

44

Issue

7

fYear

1996

fDate

7/1/1996 12:00:00 AM

Firstpage

777

Lastpage

781

Abstract

The standard correlation receiver for code-division multiple access (CDMA) systems is susceptible to the near-far problem. Power control techniques attempt to overcome near-far effects by varying transmitted power levels to ensure that all signals are received with equal power levels. Since these algorithms cannot perfectly compensate for power fluctuations in a mobile communications channel, the capacity of the system is reduced for a given bit-error rate (BER). This paper examines the performance of a CDMA system using imperfect power control by extending analytical techniques that account for multiple access interference. Single cell capacity is compared with systems employing perfect power control

Keywords

cellular radio; code division multiple access; correlation methods; error statistics; land mobile radio; power control; pseudonoise codes; radio receivers; radiofrequency interference; spread spectrum communication; telecommunication control; CDMA; bit-error rate; capacity; code-division multiple access; imperfect power control; mobile communications channel; multiple access interference; near-far problem; power fluctuations; single cell capacity; standard correlation receiver; transmitted power levels; Bit error rate; Channel capacity; Code standards; Control system analysis; Fluctuations; Mobile communication; Multiaccess communication; Multiple access interference; Performance analysis; Power control;

fLanguage

English

Journal_Title

Communications, IEEE Transactions on

Publisher

ieee

ISSN

0090-6778

Type

jour

DOI

10.1109/26.508295

Filename

508295