Partial CSI-Based Cooperative Power Allocation in Multi-Cell Dual-Hop MISO Relay Systems 


Vol. 34,  No. 9, pp. 887-895, Sep.  2009


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  Abstract

This paper proposes a cooperative power allocation with the use of partial channel information (e.g., the average signal-to-noise ratio (SNR) and transmit correlation) in multi-cell dual-hop multi-input single-output (MISO) relay systems. In a dual-hop MISO relay channel, it is desirable to allocate the transmit power between dual-hop links to maximize the end-to-end capacity. We consider the maximization of the end-to-end capacity of a dual-hop MISO relay channel under sum-power constraint. The proposed scheme adaptively allocates the transmit power considering the average channel gain of the target relay and the transmit correlation of the desired and inter-relay interference channel from adjacent relays. It is shown by means of upper-bound analysis that the end-to-end capacity can be maximized by making the angle difference of the principal eigenvectors of the desired and inter-relay interference channel orthogonal in highly-correlated channel environments. Finally, the performance of the proposed scheme is verified by computer simulation.

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  Cite this article

[IEEE Style]

H. Cho, A. Kim, J. Lee, Y. Lee, "Partial CSI-Based Cooperative Power Allocation in Multi-Cell Dual-Hop MISO Relay Systems," The Journal of Korean Institute of Communications and Information Sciences, vol. 34, no. 9, pp. 887-895, 2009. DOI: .

[ACM Style]

Hee-Nam Cho, Ah-Young Kim, Jin-Woo Lee, and Young-Hwan Lee. 2009. Partial CSI-Based Cooperative Power Allocation in Multi-Cell Dual-Hop MISO Relay Systems. The Journal of Korean Institute of Communications and Information Sciences, 34, 9, (2009), 887-895. DOI: .

[KICS Style]

Hee-Nam Cho, Ah-Young Kim, Jin-Woo Lee, Young-Hwan Lee, "Partial CSI-Based Cooperative Power Allocation in Multi-Cell Dual-Hop MISO Relay Systems," The Journal of Korean Institute of Communications and Information Sciences, vol. 34, no. 9, pp. 887-895, 9. 2009.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880