Design of TDD Synchronizer for Wibro RF Repeater 


Vol. 34,  No. 11, pp. 909-917, Nov.  2009


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  Abstract

In this paper, we proposed and implemented the method to efficiently generate TDD synchronization signal and the digital circuit for the RF repeater which can eliminate the shadow region in the wireless communication field using the time division duplex (TDD) method. After detecting the TDD signal from the transmitted or received RF signal, the detected TDD signal is fed to the RF repeater for the normal operation. The proposed technique detects the envelop of the downlink signal and amplifies the detected envelop, and then restores the degraded envelop with the proposed digital filtering method. Finally the restored envelop is manipulated to the TDD synchronization signal. Our focus on the proposed algorithm is to develop it with simple feature and low cost but robust performance. The proposed scheme was implemented to the integrated system which has both RF and digital circuit and tested under the same condition with the commercial WiBro service.

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  Cite this article

[IEEE Style]

Y. Seo and D. Kim, "Design of TDD Synchronizer for Wibro RF Repeater," The Journal of Korean Institute of Communications and Information Sciences, vol. 34, no. 11, pp. 909-917, 2009. DOI: .

[ACM Style]

Young-Ho Seo and Dong-Wook Kim. 2009. Design of TDD Synchronizer for Wibro RF Repeater. The Journal of Korean Institute of Communications and Information Sciences, 34, 11, (2009), 909-917. DOI: .

[KICS Style]

Young-Ho Seo and Dong-Wook Kim, "Design of TDD Synchronizer for Wibro RF Repeater," The Journal of Korean Institute of Communications and Information Sciences, vol. 34, no. 11, pp. 909-917, 11. 2009.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880