Performance Enhancement using Hierarchical Modulation in Distributed Relaying Systems 


Vol. 34,  No. 1, pp. 18-26, Jan.  2009


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  Abstract

Various relay technologies have been considered in wireless communication systems to enlarge the coverage and to enhance the system throughput. However, the coverage is limited by its modulation levels and additional time slot(s) is required for relaying. In the paper, by applying the hierarchical modulation to two-relay systems, two-hop relaying can be implemented instead of three hops, and both throughput and coverage can be enhanced. Throughout simulation analysis, the coverage extension is evaluated for different modulation levels and the total throughput is increased by up to two times.

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  Cite this article

[IEEE Style]

D. Choi, D. Kang, J. Park, D. K. Kim, "Performance Enhancement using Hierarchical Modulation in Distributed Relaying Systems," The Journal of Korean Institute of Communications and Information Sciences, vol. 34, no. 1, pp. 18-26, 2009. DOI: .

[ACM Style]

Du-hwan Choi, Dong-kwan Kang, Jae-hyun Park, and Duk Kyung Kim. 2009. Performance Enhancement using Hierarchical Modulation in Distributed Relaying Systems. The Journal of Korean Institute of Communications and Information Sciences, 34, 1, (2009), 18-26. DOI: .

[KICS Style]

Du-hwan Choi, Dong-kwan Kang, Jae-hyun Park, Duk Kyung Kim, "Performance Enhancement using Hierarchical Modulation in Distributed Relaying Systems," The Journal of Korean Institute of Communications and Information Sciences, vol. 34, no. 1, pp. 18-26, 1. 2009.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880