Throughput and QoS Improvement via Fixed Relay Station Cooperated Beam-Forming

Jongrok Park, Hyukmin Son, Sanghoon Lee

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)


Throughput and quality-of-service (QoS) over multicell environments are two of the most challenging issues that must be addressed when developing next generation wireless network standards. Currently, multiple-input/multiple-output (MIMO), inter-cell coordination and multi-hop relay technologies are viable options for improving channel capacity or coverage extension. Nevertheless, severe QoS degradation occurs in the outer region of multi-cells due to significant interference from neighboring cells or relay stations, thereby limiting overall performance. This paper describes an effective technique, fixed relay station cooperated beam-forming (FCBF), which combines MIMO, multi-hop relay and multi-cell coordination. Simulated testing of FCBF demonstrates an increase of 10% in the average sum-rate and a decrease of 25% in the outage probability compared with conventional techniques. In particular, throughput at the cell boundary is remarkably increased with FCBF compared with traditional beam-forming technologies.

Original languageEnglish
Pages (from-to)2400-2409
Number of pages10
JournalIEEE Transactions on Wireless Communications
Issue number5
Publication statusPublished - 2009 May

Bibliographical note

Funding Information:
Manuscript received September 30, 2007; revised August 12, 2008; accepted January 28, 2009. The associate editor coordinating the review of this paper and approving it for publication was H. Shin. This work was supported by the Korea Research Foundation Grant funded by the Korean Government (KRF-2008-314-D00287). The authors are with the Wireless Network Laboratory, Department of Electrical and Electronic Engineering, Yonsei University, Seoul, 120-749, Korea (e-mail: {bulo22, sbpgood, slee} Digital Object Identifier 10.1109/TWC.2009.071079

All Science Journal Classification (ASJC) codes

  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Applied Mathematics


Dive into the research topics of 'Throughput and QoS Improvement via Fixed Relay Station Cooperated Beam-Forming'. Together they form a unique fingerprint.

Cite this