Mitigation Techniques for OFDMA Systems Based on SDD 


Vol. 34,  No. 8, pp. 742-749, Aug.  2009


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  Abstract

In this paper, we propose mitigation techniques using time-domain shortening filter (TSF) and frequencydomain shortening filter (FSF) to overcome inter-block interference (IBI) and inter-carrier interference (ICI) due to the time difference of arrival (TDoA) and carrier frequency offset (CFO) between downlink and uplink signals from access point (AP) and subscriber station (SS) in synchronous digital duplexing (SDD)/orthogonal frequency division multiple access (OFDMA) systems for indoor wireless communication. The proposed TSF and FSF maximize SIR for shortening in time (SIRST) and SINR for shortening in frequency (SINRSF), respectively, by using channel impulse responses and timing information among stations, obtained from mutual ranging procedure. It is verified by computer simulation that the proposed TSF and FSF reduce effectively the effects of IBI and ICI in the SDD/OFDMA systems.

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  Cite this article

[IEEE Style]

C. H. Park, Y. H. Ko, M. C. Kim, K. Park, W. Jeon, J. Paik, S. P. Lee, Y. S. Cho, "Mitigation Techniques for OFDMA Systems Based on SDD," The Journal of Korean Institute of Communications and Information Sciences, vol. 34, no. 8, pp. 742-749, 2009. DOI: .

[ACM Style]

Chang Hwan Park, Yo Han Ko, Moo Chul Kim, Kyung-won Park, Won-gi Jeon, Jong-ho Paik, Seok Pil Lee, and Yong Soo Cho. 2009. Mitigation Techniques for OFDMA Systems Based on SDD. The Journal of Korean Institute of Communications and Information Sciences, 34, 8, (2009), 742-749. DOI: .

[KICS Style]

Chang Hwan Park, Yo Han Ko, Moo Chul Kim, Kyung-won Park, Won-gi Jeon, Jong-ho Paik, Seok Pil Lee, Yong Soo Cho, "Mitigation Techniques for OFDMA Systems Based on SDD," The Journal of Korean Institute of Communications and Information Sciences, vol. 34, no. 8, pp. 742-749, 8. 2009.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880