A simple linear multiuser precoding technique in cellular relay networks

Authors:
Jongyeol Ryu;Wan Choi
Affiliations:
Department of Electrical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, Korea;Department of Electrical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, Korea
Venue:
IEEE Communications Letters
Year:
2010

Citing 3
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Abstract

In this paper, we propose a simple linear multiuser precoding scheme for downlink cellular systems with a decode-and forward (DF) based relay, where the available information at a base station (BS) and a relay station (RS) is asymmetric. The proposed scheme not only eliminates the interference from a RS for the mobile station (MS) served by a BS but also provides the MS supported by a RS with a macro diversity gain without any information exchange between a BS and a RS. Consequently, the proposed scheme outperforms a conventional scheme and approaches an ideal scheme using dirty paper coding (DPC) in the information asymmetric configuration.