Very low rate convolution codes for maximum theoretical performance of spread-spectrum multiple-access channels

Author

Viterbi, Andrew J.

Author_Institution

QIALCOMM Inc., San Diego, CA, USA

Volume

8

Issue

4

fYear

1990

fDate

5/1/1990 12:00:00 AM

Firstpage

641

Lastpage

649

Abstract

A spread-spectrum multiple-access (SSMA) communication system is treated for which both spreading and error control is provided by binary PSK modulation with orthogonal convolution codes. Performance of spread-spectrum multiple access by a large number of users employing this type of coded modulation is determined in the presence of background Gaussian noise. With this approach and coordinated processing at a common receiver, it is shown that the aggregate data rate of all simultaneous users can approach the Shannon capacity of the Gaussian noise channel

Keywords

codes; multi-access systems; phase shift keying; radiofrequency interference; spread spectrum communication; telecommunication channels; Gaussian noise channel; SSMA channels; Shannon capacity; aggregate data rate; background Gaussian noise; binary PSK modulation; coded modulation; error control; low rate convolution codes; maximum theoretical performance; orthogonal convolution codes; spread-spectrum multiple-access; spreading control; Convolution; Convolutional codes; Error probability; Gaussian noise; Interference; Maximum likelihood decoding; Modulation coding; Multiaccess communication; Spread spectrum communication; Viterbi algorithm;

fLanguage

English

Journal_Title

Selected Areas in Communications, IEEE Journal on

Publisher

ieee

ISSN

0733-8716

Type

jour

DOI

10.1109/49.54460

Filename

54460