Uplink Sub-channel Allocation and Power Control Algorithm Using Ranging Information in High speed Portable Internet System 


Vol. 30,  No. 9, pp. 729-736, Sep.  2005


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  Abstract

In this paper, we introduce a new approach for the design of uplink sub-channel allocation and power control in the High-speed Portable Internet system that is based on OFDMA/TDD scheme. In OFDMA system, because the number of allocated sub-channel in mobile station varies from one to the whole sub-channel as in base station while mobile station's transmit power is lower than that of base station, full loading range(FLR) constraint occurs where whole sub-channel can be used and the conventional open-loop power control scheme can not be used beyond FLR. We propose a new scheme that limits the maximum sub-channel allocation number and uses power concentration gain(PCG) depending on location of mobile station, which is based on ranging in OFDMA system. Simulation results show that the proposed scheme extends the uplink coverage to the entire cell service coverage area, provides solutions for optimum utilization of radio resource and enables open-loop power control beyond FLR without extra hardware complexity.

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  Cite this article

[IEEE Style]

D. Kim and W. W. Kim, "Uplink Sub-channel Allocation and Power Control Algorithm Using Ranging Information in High speed Portable Internet System," The Journal of Korean Institute of Communications and Information Sciences, vol. 30, no. 9, pp. 729-736, 2005. DOI: .

[ACM Style]

Daeho Kim and Whan Woo Kim. 2005. Uplink Sub-channel Allocation and Power Control Algorithm Using Ranging Information in High speed Portable Internet System. The Journal of Korean Institute of Communications and Information Sciences, 30, 9, (2005), 729-736. DOI: .

[KICS Style]

Daeho Kim and Whan Woo Kim, "Uplink Sub-channel Allocation and Power Control Algorithm Using Ranging Information in High speed Portable Internet System," The Journal of Korean Institute of Communications and Information Sciences, vol. 30, no. 9, pp. 729-736, 9. 2005.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880