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Adaptive puncturing and rate selection in single-codeword turbo-coded OFDMA

Abdelhakim, M and Nafie, M and Shalash, A and Elezabi, AY (2009) Adaptive puncturing and rate selection in single-codeword turbo-coded OFDMA. Proceedings - 2009 IEEE Mobile WiMAX Symposium, MWS 2009. 174 - 179.

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This paper proposes using adaptive puncturing for rate-adaptive OFDMA systems utilizing turbo codes. The scheme is based on adaptively puncturing a Single Code Word (SCW) and hence adaptively changing the rate within the codeword. We compare the SCW against the Multiple Code-Words (MCWs) scheme where different rates are obtained by separate encoding, puncturing, and interleaving on a per-tile basis. Noticeable gains are obtained over the MCW scheme due to the use of larger turbo block sizes and hence larger interleavers. The SCW has around 1dB gain in goodput compared to MCWs, with much improved BER performance. We also propose a novel rate selection scheme for the SCW which we call Recursive Mutual Information Effective SNR mapping (R-MIESM) and compare it against the conventional MIESM scheme. The R-MIESM provides further goodput performance gains for the SCW compared to the MIESM method. © 2009 IEEE.


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Item Type: Article
Status: Published
CreatorsEmailPitt UsernameORCID
Abdelhakim, MMAIA@pitt.eduMAIA0000-0001-8442-0974
Nafie, M
Shalash, A
Elezabi, AY
Date: 10 December 2009
Date Type: Publication
Journal or Publication Title: Proceedings - 2009 IEEE Mobile WiMAX Symposium, MWS 2009
Page Range: 174 - 179
DOI or Unique Handle: 10.1109/mws.2009.31
Schools and Programs: School of Information Sciences > Telecommunications
Refereed: Yes
Date Deposited: 30 Jun 2017 13:44
Last Modified: 09 Aug 2019 16:55


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