Channel Estimation and Analog Beam Selection for Uplink Multiuser Hybrid Beamforming System 


Vol. 40,  No. 3, pp. 459-468, Mar.  2015


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  Abstract

In this paper, we consider an uplink multiuser hybrid beamforming system where an access point (AP) communicates with multiple users simultaneously. The performance of the uplink multiuser hybrid beamforming system depends on the effective channel which is given by the product of the channel matrix and the analog beams. Therefore, to maximize the performance, we need to obtain the channel information and then select the analog beams appropriately by using the acquired channel information. In this paper, we propose the channel estimation method and low complexity analog beam selection algorithm for the uplink multiuser hybrid beamforming system. Additionally, our analysis shows that the proposed low complexity analog beam selection algorithm provides much less complexity than the optimum analog beam selection algorithm. From the numerical results, we confirm that the proposed low complexity analog beam selection algorithm has little performance degradation in spite of much less complexity than the optimum analog beam selection algorithm under the equal system configuration.

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  Cite this article

[IEEE Style]

M. Kim and Y. Ko, "Channel Estimation and Analog Beam Selection for Uplink Multiuser Hybrid Beamforming System," The Journal of Korean Institute of Communications and Information Sciences, vol. 40, no. 3, pp. 459-468, 2015. DOI: .

[ACM Style]

Myeong-Jin Kim and Young-Chai Ko. 2015. Channel Estimation and Analog Beam Selection for Uplink Multiuser Hybrid Beamforming System. The Journal of Korean Institute of Communications and Information Sciences, 40, 3, (2015), 459-468. DOI: .

[KICS Style]

Myeong-Jin Kim and Young-Chai Ko, "Channel Estimation and Analog Beam Selection for Uplink Multiuser Hybrid Beamforming System," The Journal of Korean Institute of Communications and Information Sciences, vol. 40, no. 3, pp. 459-468, 3. 2015.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880