A Synchronization Technique for OFDM-based Full Duplex Relays with Frequency-domain Feedback Interference Canceller 


Vol. 34,  No. 6, pp. 468-475, Jun.  2009


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  Abstract

In OFDM-based Full Duplex Relays (FDR) with Decode and Forward (DF) scheme, an interference cancellation technique in the frequency domain is more efficient than the one in the time domain. However, an Inter-Symbol Interference (ISI) and Inter-Carrier Interference (ICI) may occur due to the timing mismatch between the feedback interference signal and the desired signal from Base Station (BS) when the feedback interference cancellation and demodulation are performed in the frequency domain. In this paper, the effects of timing mismatch on the synchronous type and asynchronous type of OFDM-based FDR are analyzed for uplink and downlink cases. Then, synchronization procedure and methods for reducing ISI and ICI in OFDM-based FDR with frequency-domain feedback interference canceller are proposed and verified by computer simulation.

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  Cite this article

[IEEE Style]

H. I. Yoo, K. S. Woo, C. H. Park, J. Kim, S. Jung, Y. S. Cho, "A Synchronization Technique for OFDM-based Full Duplex Relays with Frequency-domain Feedback Interference Canceller," The Journal of Korean Institute of Communications and Information Sciences, vol. 34, no. 6, pp. 468-475, 2009. DOI: .

[ACM Style]

Hyun Il Yoo, Kyung Soo Woo, Chang Hwan Park, Jaekwon Kim, Sungyoon Jung, and Yong Soo Cho. 2009. A Synchronization Technique for OFDM-based Full Duplex Relays with Frequency-domain Feedback Interference Canceller. The Journal of Korean Institute of Communications and Information Sciences, 34, 6, (2009), 468-475. DOI: .

[KICS Style]

Hyun Il Yoo, Kyung Soo Woo, Chang Hwan Park, Jaekwon Kim, Sungyoon Jung, Yong Soo Cho, "A Synchronization Technique for OFDM-based Full Duplex Relays with Frequency-domain Feedback Interference Canceller," The Journal of Korean Institute of Communications and Information Sciences, vol. 34, no. 6, pp. 468-475, 6. 2009.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880