CaltechAUTHORS
  A Caltech Library Service

A new spreading scheme for convolutionally coded CDMA communication in a Rayleigh-fading channel

Bang, Young Jo and Kim, Sang Wu (1996) A new spreading scheme for convolutionally coded CDMA communication in a Rayleigh-fading channel. IEEE Transactions on Communications, 44 (11). pp. 1537-1542. ISSN 0090-6778. http://resolver.caltech.edu/CaltechAUTHORS:20170408-142906199

[img] PDF - Published Version
See Usage Policy.

604Kb

Use this Persistent URL to link to this item: http://resolver.caltech.edu/CaltechAUTHORS:20170408-142906199

Abstract

There has been increased interest in the use of direct-sequence code-division multiple-access (DS/CDMA) for wireless communication systems. We find that the asymptotic bit-error probability (BEP), P_b, of a convolutionally coded code-division multiple-access (CDMA) system in a frequency-selective Rayleigh-fading channel depends on the length of the shortest error event path and the product of symbol distances along that path. Based on this observation, we propose a new spreading scheme that maximizes the length of the shortest error event path. It is shown that the proposed scheme yields an improvement of 1.0-1.3 dB at P_b = 10^(-5) over the conventional convolutionally coded CDMA system, and even a higher improvement can be achieved as the required BEP is decreased.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1109/26.544470DOIArticle
http://ieeexplore.ieee.org/document/544470/PublisherArticle
Additional Information:© 1996 IEEE. Paper approved by R. Peterson, the Editor for Spread-Spectrum Systems of the IEEE Communications Society. Manuscript received November 5, 1994; revised October 20, 1995 and May 31, 1996. This paper was presented in part at the 1995 IEEE International Conference on Communications, Seattle, Washington, June 18-22, 1995.
Subject Keywords:Convolutional codes, Multiaccess communication, Rayleigh channels, Convolution, Frequency, Additive white noise, AWGN channels, Fading, Interleaved codes, Transmitters
Record Number:CaltechAUTHORS:20170408-142906199
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20170408-142906199
Official Citation:Young Jo Bang and Sang Wu Kim, "A new spreading scheme for convolutionally coded CDMA communication in a Rayleigh-fading channel," in IEEE Transactions on Communications, vol. 44, no. 11, pp. 1537-1542, Nov 1996. doi: 10.1109/26.544470
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:75952
Collection:CaltechAUTHORS
Deposited By: 1Science Import
Deposited On:21 Apr 2017 21:01
Last Modified:21 Apr 2017 21:01

Repository Staff Only: item control page