Characteristics of the Required Signal Power for Multimedia Traffic in CDMA Systems 


Vol. 27,  No. 6, pp. 593-600, Jun.  2002


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  Abstract

The reverse link signal power required for multimedia traffic in multipath faded single-code (SC-) and multi-code CDMA (MC-CDMA) systems is investigated. The effect of orthogonality loss among multiple spreading code channels is herein characterized by the orthogonality factor. The required signal power in both the CDMA systems is then analyzed in terms of the relative required signal power ratio of data to voice traffic. The effect of varying system parameters including spreading bandwidth, the orthogonality factor, and the number of spreading codes are examined. Analytical results show that MC-CDMA users transmitting only a single traffic type require significantly more power than SC-CDMA users with only a single traffic type. On the other hand, MC-CDMA users transmitting multimedia traffic require power levels approximately identical to SC-CDMA users with multimedia traffic. The results can be used in the design of radio resource management (e.g., power allocation) scheme for wireless multimedia services.

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  Cite this article

[IEEE Style]

C. S. Kang, "Characteristics of the Required Signal Power for Multimedia Traffic in CDMA Systems," The Journal of Korean Institute of Communications and Information Sciences, vol. 27, no. 6, pp. 593-600, 2002. DOI: .

[ACM Style]

Chang Soon Kang. 2002. Characteristics of the Required Signal Power for Multimedia Traffic in CDMA Systems. The Journal of Korean Institute of Communications and Information Sciences, 27, 6, (2002), 593-600. DOI: .

[KICS Style]

Chang Soon Kang, "Characteristics of the Required Signal Power for Multimedia Traffic in CDMA Systems," The Journal of Korean Institute of Communications and Information Sciences, vol. 27, no. 6, pp. 593-600, 6. 2002.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880