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. doi:10.1109/26.544470. https://resolver.caltech.edu/CaltechAUTHORS:20170408-142906199
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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 | |||||||||
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| 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 | |||||||||
| Issue or Number: | 11 | |||||||||
| DOI: | 10.1109/26.544470 | |||||||||
| Record Number: | CaltechAUTHORS:20170408-142906199 | |||||||||
| Persistent URL: | https://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: | 15 Nov 2021 16:56 |
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