Pilot Emitting AF Relays and Its Applications to Beamforming 


Vol. 33,  No. 12, pp. 1165-1171, Dec.  2008


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  Abstract

In this paper, a pilot emitting amplify-and-forward relay and its beamforming schemes, OBF (overall beamforming) and HBF (hop-by-hop beamforming), are proposed for two-hop relaying systems. The OBF performs beamforming with respect to a overall channel from a source node (SN) to a destination node (DN) through a relay node (RN), while the proposed HBF performs two independent beamformings: from the SN to the RN and from the RN to the DN. From our analytic and numerical results, it is shown that bit-error-rate (BER) performance of the proposed HBF is better than that of the OBF scheme since the HBF system can estimate channel more proper than the CBF system, which is verified by deriving and comparing the mean square errors of the channel estimation.

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  Cite this article

[IEEE Style]

J. Joung, C. Lee, Y. H. Lee, "Pilot Emitting AF Relays and Its Applications to Beamforming," The Journal of Korean Institute of Communications and Information Sciences, vol. 33, no. 12, pp. 1165-1171, 2008. DOI: .

[ACM Style]

Jingon Joung, Changsoo Lee, and Yong Hoon Lee. 2008. Pilot Emitting AF Relays and Its Applications to Beamforming. The Journal of Korean Institute of Communications and Information Sciences, 33, 12, (2008), 1165-1171. DOI: .

[KICS Style]

Jingon Joung, Changsoo Lee, Yong Hoon Lee, "Pilot Emitting AF Relays and Its Applications to Beamforming," The Journal of Korean Institute of Communications and Information Sciences, vol. 33, no. 12, pp. 1165-1171, 12. 2008.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880