A Feedback Scheme for ZFBF-Based MIMO Broadcast Systems with Infrastructure Relay Stations

Kuo, Ping-Heng; Choi, Joonil; Suh, Junghoon; Kim, Sungjin

doi:10.1109/wcnc.2008.192

Cited by 4 publications

(1 citation statement)

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“…Deploying the RS with multiple antennas in a cell edge area, where the nearby users experience significant shadowing, enables the system to achieve a high data transmission rate at the BS and the users [6]. In addition, since the fixed RS can perform more complex operations than a mobile relay, the RS can take over a portion of the operations in the BS [7]. Thus, it is possible to reduce the complexity of the BS by using the RS as a sub-BS.…”

Section: Introductionmentioning

confidence: 99%

Two-Way Relaying-Based Two-Hop Two-User Multiple-Input Multiple-Output System

Cho

Choi²

2014

Journal of information and communication convergence engineerin

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In multi-hop communication systems, two-way relaying is one of the solutions to mitigate the spectral efficiency loss caused by a half-duplex transmission. In this paper, a simple two-way relaying scheme is proposed for two-hop two-user multiple input multiple output (MIMO) systems. In the proposed system, a base station and a relay station (RS), both equipped with two antennas, form a point-to-point MIMO channel, while the RS and two single-antenna mobile users form a point-tomultipoint multiuser (MU)-MIMO channel. Numerical examples show that the proposed system achieves a significant sum rate gain as compared to a one-way relaying system as the distance between a relay and the two users decreases. We also show that although we can expand the proposed scheme to more than two users, its performance gain as compared to that of oneway relaying decreases with an increase in the number of users.

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Section: Introductionmentioning

confidence: 99%