A Grouping Technique for Synchronous Digital Duplexing Systems 


Vol. 34,  No. 4, pp. 341-347, Apr.  2009


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  Abstract

In this paper, we propose a grouping technique for the SDD(Synchronous Digital Duplexing) based on OFDMA(Orthogonal Frequency Division Multiple Access). The SDD has advantages of increasing data efficiency and flexibility of resource since SDD can transmit uplink signals and downlink signals simultaneously by using mutual time information and mutual channel information, obtained during mutual ranging process. However, the SDD has a disadvantage of requiring additional CS to maintain orthogonality of OFDMA symbols when the sum of mutual time difference and mutual channel length between AP(access point) and SS(subscriber station) or among SSs are larger than CP length. In order to minimize the length of CS for the case of requiring additional CS in SDD, we proposes a grouping technique which controls transmit timing and receive timing of AP and SS in a cell by classifying them into groups. Performances of the proposed grouping technique are evaluated by computer simulation.

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  Cite this article

[IEEE Style]

Y. H. Ko, C. H. Park, K. W. Park, W. G. Jeon, J. H. Paik, S. P. Lee, Y. S. Cho, "A Grouping Technique for Synchronous Digital Duplexing Systems," The Journal of Korean Institute of Communications and Information Sciences, vol. 34, no. 4, pp. 341-347, 2009. DOI: .

[ACM Style]

Yo Han Ko, Chang Hwan Park, Kyung Won Park, Won Gi Jeon, Jong Ho Paik, Seok Pil Lee, and Yong Soo Cho. 2009. A Grouping Technique for Synchronous Digital Duplexing Systems. The Journal of Korean Institute of Communications and Information Sciences, 34, 4, (2009), 341-347. DOI: .

[KICS Style]

Yo Han Ko, Chang Hwan Park, Kyung Won Park, Won Gi Jeon, Jong Ho Paik, Seok Pil Lee, Yong Soo Cho, "A Grouping Technique for Synchronous Digital Duplexing Systems," The Journal of Korean Institute of Communications and Information Sciences, vol. 34, no. 4, pp. 341-347, 4. 2009.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880