Performance evaluation of hybrid ARQ schemes of 3GPP LTE OFDMA system

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

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Abstract

Expectations and requirements for future wireless communication systems continue to grow and evolve. Thus, recently, the Third Generation Partnership Project (3GPP) has considered the Long Term Evolution (LTE) of 3G - also known as Super 3G - to ensure its competitiveness in the future. It is generally assumed that the downlink of the new air interface would be OFDMA based and that some form of Hybrid ARQ (HARQ) might be employed. This paper aims to evaluate the performance of various HARQ schemes over the OFDMA downlink of the currently proposed 3GPP LTE specification. Schemes are compared in terms of throughput and PER in the context their differing memory requirements for implementation. Simulation results show that Type II Incremental Redundancy offers the best throughput performance but at the cost of higher memory requirement. However, when the schemes are enhanced with subcarrier and constellation rearrangement techniques, the performance gap between the different HARQ types is reduced significantly.
Translated title of the contributionPerformance Evaluation of Hybrid ARQ Schemes of 3GPP LTE OFDMA System
Original languageEnglish
Title of host publicationIEEE 18th International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC 2007), Athens
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages1 - 5
Number of pages5
ISBN (Print)9781424411443
DOIs
Publication statusPublished - Sep 2007
Event18th International Symposium on Personal, Indoor and Mobile Radio Communications (2007) - Athens, Greece
Duration: 1 Sep 2007 → …

Conference

Conference18th International Symposium on Personal, Indoor and Mobile Radio Communications (2007)
Abbreviated titlePIMRC
CountryGreece
CityAthens
Period1/09/07 → …

Bibliographical note

Rose publication type: Conference contribution

Additional information: With accompanying conference presentation

Sponsorship: This project is funded as part of the Core 4 Research Programme of the Virtual Centre of Excellence in Mobile & Personal Communications, Mobile VCE, (www.mobilevce.com), whose funding support, including that of EPSRC is gratefully acknowledged.

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Keywords

  • 3GPP LTE
  • OFDMA
  • hybrid ARQ
  • chase Combining
  • incremental redundancy

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