Cooperative joint precoding for relay enhanced cellular system: Design and performance evaluation

Jae Woo Kwon, Ki Hong Park, Young Chai Ko, Hong Chuan Yang

Research output: Contribution to conferencePaperpeer-review

1 Citation (Scopus)

Abstract

In this paper, we introduce the notion of a relay enhanced cellular system, where a relay station is located in the overlap area served by two base stations, and propose a cooperative joint precoding scheme for the relay enhanced cellular system. We consider a system in which two base stations apply linear precoding to minimize the interference at the relay station and the mobile stations and formulate the optimization problem to maximize the system capacity and design the multiuser precoding vector for each base station. We quantify the ergodic rate performance of the proposed multiuser precoding scheme through statistical analysis. Numerical results show that the proposed scheme can effectively cancel the interference and improve the sum rate performance for cell edge users.

Original languageEnglish
Pages1820-1824
Number of pages5
DOIs
Publication statusPublished - 2011
Event7th International Wireless Communications and Mobile Computing Conference, IWCMC 2011 - Istanbul, Turkey
Duration: 2011 Jul 42011 Jul 8

Other

Other7th International Wireless Communications and Mobile Computing Conference, IWCMC 2011
Country/TerritoryTurkey
CityIstanbul
Period11/7/411/7/8

Bibliographical note

Funding Information:
V. CONCLUSION We proposed and analyzed a cooperative joint precoding scheme for the relay enhanced cellular system. Numerical results showed that the proposed multiuser precoding scheme can effectively cancel the interference and improve the sum rate performance for cell edge users. We also verified that the analytical result of the ergodic rate represents a very tight bound of the actual values through simulation. We are currently working on the extension of this paper such as more than two BSs system model. ACKNOWLEDGMENT This work was supported by the Ministry of Knowledge Economy, Korea, under the ITRC support program supervised by the NIPA (NIPA-2011-C1090-1011-0007).

Publisher Copyright:
© 2011 IEEE.

Keywords

  • Communication with relay
  • Cooperative joint precoding
  • Ergodic rate

ASJC Scopus subject areas

  • Artificial Intelligence

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