Relay-enhanced cellular performance of OFDMA-TDD system for mobile wireless broadband services

Kyungmi Park, Chung Gu Kang, Daeyoung Chang, Seungho Song, Jongguk Ahn, Jongtae Ihm

Research output: Chapter in Book/Report/Conference proceedingConference contribution

25 Citations (Scopus)

Abstract

Multi-hop relay (MR) and repeater are useful means of improving system throughput and coverage in the cellular mobile packet access system, as carrier-to-interference ratio can be improved with deploying them in the heavily shadowed region. In this paper, we investigate the bandwidth efficiency and the associated service outage performance for the different relay scenarios, using the system level simulation for a cellular OFDMA-TDD system. It is demonstrated that a capacity gain by an optical repeater which has a simple amplify-and-forwarding capability only could be minimal due to co-channel interference from all repeaters in the neighbor cells, even though they are usually useful for warranting the outage performance with a multiple order of combining gain, especially in the destructive area, e.g., edge of sub-cell coverage. Meanwhile, multi-hop relays are shown to increase the average system capacity (almost doubling the system throughput) by fully reusing the frequency in every relay station, while improving the per-user data rate in the cell edges or heavily shadowed areas.

Original languageEnglish
Title of host publicationProceedings - International Conference on Computer Communications and Networks, ICCCN
Pages430-435
Number of pages6
DOIs
Publication statusPublished - 2007 Dec 1
Event16th International Conference on Computer Communications and Networks 2007, ICCCN 2007 - Honolulu, HI, United States
Duration: 2007 Aug 132007 Aug 16

Other

Other16th International Conference on Computer Communications and Networks 2007, ICCCN 2007
CountryUnited States
CityHonolulu, HI,
Period07/8/1307/8/16

ASJC Scopus subject areas

  • Computer Science(all)

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    Park, K., Kang, C. G., Chang, D., Song, S., Ahn, J., & Ihm, J. (2007). Relay-enhanced cellular performance of OFDMA-TDD system for mobile wireless broadband services. In Proceedings - International Conference on Computer Communications and Networks, ICCCN (pp. 430-435). [4317857] https://doi.org/10.1109/ICCCN.2007.4317857