Error exponents for maximum-likelihood and successive decoders for the Gaussian CDMA channel

Author

Guess, Tommy ; Varanasi, Mahesh K.

Author_Institution

Dept. of Electr. Eng., Virginia Univ., Charlottesville, VA, USA

Volume

46

Issue

4

fYear

2000

fDate

7/1/2000 12:00:00 AM

Firstpage

1683

Lastpage

1691

Abstract

Random-coding error exponents are derived for the Gaussian code-division multiple-access (CDMA) channel for the maximum-likelihood and optimum successive decoders. Error exponents not only specify the capacity region of the channel, which is known, but also give lower bounds on the rate of exponential decay of the average probability of error as a function of the block length of random codes. A comparison of the two decoders in terms of their error exponents is included

Keywords

Gaussian channels; block codes; channel capacity; channel coding; code division multiple access; error statistics; maximum likelihood decoding; multiuser channels; random codes; Gaussian CDMA channel; Gaussian code-division multiple-access; average probability of error; block length; capacity; error exponents; exponential decay; maximum-likelihood decoders; random codes; random-coding error exponents; successive decoders; Capacity planning; Error analysis; Error probability; Information analysis; Information theory; Maximum likelihood decoding; Multiaccess communication; Pulse modulation; Region 4; Sufficient conditions;

fLanguage

English

Journal_Title

Information Theory, IEEE Transactions on

Publisher

ieee

ISSN

0018-9448

Type

jour

DOI

10.1109/18.850716

Filename

850716