MIMO beamforming for QoS enhancement via analog, digital and hybrid relaying

Jongrok Park; Sanghoon Lee

doi:10.1109/TBC.2010.2058031

MIMO beamforming for QoS enhancement via analog, digital and hybrid relaying

Jongrok Park, Sanghoon Lee

Department of Electrical and Electronic Engineering

Research output: Contribution to journal › Article › peer-review

17 Citations (Scopus)

Abstract

Quality-of-service (QoS) of multimedia broadcast/multicast service (MBMS) is the most challenging issue that needs to be addressed for next generation wireless broadcasting. Multiple-input/multiple-output (MIMO) and multihop relay technologies are viable options for improving QoS of MBMS. For stable MBMS, the average throughput of overall cell region must be guaranteed. Nevertheless, severe throughput degradation may occur in the outer region of multicells due to significant interference from neighboring cells or relay stations, thereby limiting the overall performance. This paper describes an effective technique, which combines MIMO and two-hop relay, to guarantee the QoS of edge users. We assume that the channel between the base station (BS) and the fixed relay station (FRS) is line-of-sight (LOS). First, we define a criterion needed to install the FRS. Second, we construct a weight matrix for hybrid relaying having lower complexity than digital relaying. Finally, we propose a user scheduling algorithm which can be adapted to analog relaying (amplify and forward), digital relaying (decode and forward) and hybrid relaying (filter, amplify and forward). The simulation results show that the proposed method can improve both the QoS of edge users and the sum-rate.

Original language	English
Article number	5535202
Pages (from-to)	494-503
Number of pages	10
Journal	IEEE Transactions on Broadcasting
Volume	56
Issue number	4
DOIs	https://doi.org/10.1109/TBC.2010.2058031
Publication status	Published - 2010 Dec

Bibliographical note

Funding Information:
Manuscript received January 16, 2009; revised June 13, 2010; accepted June 19, 2010. Date of publication August 03, 2010; date of current version November 19, 2010 This work was supported by the IT R&D program of MKE/KEIT [KI002091, Research on Multiple Antenna and Multihop Relay Transmission Technologies for Next Generation Mobile Broadcasting Service].

All Science Journal Classification (ASJC) codes

Media Technology
Electrical and Electronic Engineering

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10.1109/TBC.2010.2058031

Cite this

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abstract = "Quality-of-service (QoS) of multimedia broadcast/multicast service (MBMS) is the most challenging issue that needs to be addressed for next generation wireless broadcasting. Multiple-input/multiple-output (MIMO) and multihop relay technologies are viable options for improving QoS of MBMS. For stable MBMS, the average throughput of overall cell region must be guaranteed. Nevertheless, severe throughput degradation may occur in the outer region of multicells due to significant interference from neighboring cells or relay stations, thereby limiting the overall performance. This paper describes an effective technique, which combines MIMO and two-hop relay, to guarantee the QoS of edge users. We assume that the channel between the base station (BS) and the fixed relay station (FRS) is line-of-sight (LOS). First, we define a criterion needed to install the FRS. Second, we construct a weight matrix for hybrid relaying having lower complexity than digital relaying. Finally, we propose a user scheduling algorithm which can be adapted to analog relaying (amplify and forward), digital relaying (decode and forward) and hybrid relaying (filter, amplify and forward). The simulation results show that the proposed method can improve both the QoS of edge users and the sum-rate.",

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MIMO beamforming for QoS enhancement via analog, digital and hybrid relaying

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