Robust frame rate detection for variable rate transmission in CDMA

Author

Yang, Gordon ; Kallel, Samir

Author_Institution

Dept. of Electr. & Comput. Eng., British Columbia Univ., Vancouver, BC, Canada

Volume

1

fYear

1999

fDate

9-12 May 1999

Firstpage

62

Abstract

The transmitted data rate in the forward traffic channel in the existing IS-95 CDMA system is variable from frame to frame. The purpose of this variable data rate transmission is to maximize the use of the multiple access channel. In order to reduce the overhead in a frame, however, the data rate information is not provided to mobile station receivers. This paper presents a robust frame rate detection scheme for variable data rate transmission systems like the IS-95 CDMA system. Simulation results show that the proposed rate detection scheme can provide a gain of up to 1.8 dB over the conventional method in terms of the required bit energy to noise ratio E/sub b//N/sub o/ at a detection error rate of 10/sup -4/ in the AWGN environment.

Keywords

AWGN; cellular radio; digital radio; error statistics; multiuser channels; signal detection; telecommunication standards; AWGN environment; IS-95 CDMA system; bit energy to noise ratio; cellular communications systems; data rate information; detection error rate; digital cellular standard; forward traffic channel; frame overhead reduction; mobile station receivers; multiple access channel; robust frame rate detection; simulation results; transmitted data rate; variable data rate transmission; variable rate transmission; AWGN; Additive white noise; Decoding; Error analysis; Gaussian noise; Multiaccess communication; Noise robustness; Signal to noise ratio; Viterbi algorithm; Working environment noise;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical and Computer Engineering, 1999 IEEE Canadian Conference on

Conference_Location

Edmonton, Alberta, Canada

ISSN

0840-7789

Print_ISBN

0-7803-5579-2

Type

conf

DOI

10.1109/CCECE.1999.807171

Filename

807171