A Dynamic Channel Allocation Employing Smart Antenna to Resolve a Crossed Time-slot Problem in TD-SCDMA 


Vol. 32,  No. 12, pp. 1276-1285, Dec.  2007


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  Abstract

Since the TD-SCDMA (Time Division-Synchronous Code Division Multiple Access) system is based on TDD (Time Division Duplexing), the uplink and downlink can be allocated asymmetrically according to the traffic e.g. Web browsing. Although this asymmetric allocation can increase the frequency utilization, it may cause time slot opposing, which implies the time slot is assigned in opposing direction between cells. The time slot opposing can generate significant interference between cells, which results in severe performance degradation. In the paper, a novel dynamic channel allocation (DCA) is proposed in the TD-SCDMA system, to mitigate the impact of time slot opposing considering smart antenna. When the smart antenna is applied in the system, the inter-cell interference is largely affected by beam pattern and beam direction between neighboring cells. Therefore, the time slot opposing and smart antenna should be considered together in the DCA. The intensive simulations show that the proposed scheme can improve the system capacity compared to the conventional DCA schemes.

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  Cite this article

[IEEE Style]

E. Kim, J. Park, D. Kim, "A Dynamic Channel Allocation Employing Smart Antenna to Resolve a Crossed Time-slot Problem in TD-SCDMA," The Journal of Korean Institute of Communications and Information Sciences, vol. 32, no. 12, pp. 1276-1285, 2007. DOI: .

[ACM Style]

Eun-Heon Kim, Jae-Hyun Park, and Duk-Kyung Kim. 2007. A Dynamic Channel Allocation Employing Smart Antenna to Resolve a Crossed Time-slot Problem in TD-SCDMA. The Journal of Korean Institute of Communications and Information Sciences, 32, 12, (2007), 1276-1285. DOI: .

[KICS Style]

Eun-Heon Kim, Jae-Hyun Park, Duk-Kyung Kim, "A Dynamic Channel Allocation Employing Smart Antenna to Resolve a Crossed Time-slot Problem in TD-SCDMA," The Journal of Korean Institute of Communications and Information Sciences, vol. 32, no. 12, pp. 1276-1285, 12. 2007.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880