Performance Evaluation of OFDM Amplify-and-Forward Relay System with Subcarrier Permutation

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概要

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• We perform error probability analysis of the uncoded OFDM fixed gain Amplify-and-Forward (AF) relaying system with subcarrier permutation (SCP). Two SCP schemes, named: the best-to-best SCP (BTB SCP) and the best-to-worst SCP (BTW SCP) are considered. Closed-form expressions for the bit error rate (BER) of the above SCP methods are derived. Numerical results manifest that these SCP schemes may outperform one another, depending on the average channel conditions of the links involved. That is, BTB SCP is better at low signal-to-noise ratio (SNR) values, while BTW SCP prevails in the medium and high SNR regime. Thus, it could be concluded that OFDM AF relaying systems may switch from the BTB SCP to BTW SCP in order to achieve optimum BER performance. Moreover, using the derived end-to-end SNR probability density functions (PDF), tight upper bounds for the ergodic capacities of both SCP schemes are obtained.

• 2010-05-01

著者

• Kocan Enis

  Faculty Of Electrical Engineering University Of Montenegro

• PEJANOVIC-DJURISIC Milica

  Faculty of Electrical Engineering, University of Montenegro

• MICHALOPOULOS Diomidis

  Department of Electrical and Computer Engineering, University of British Columbia

• KARAGIANNIDIS George

  Department of Electrical and Computer Engineering, Aristotle University of Thessaloniki

• Pejanovic-djurisic Milica

  Faculty Of Electrical Engineering University Of Montenegro

• Karagiannidis George

  Department Of Electrical And Computer Engineering Aristotle University Of Thessaloniki

• Michalopoulos Diomidis

  Department Of Electrical And Computer Engineering University Of British Columbia

関連論文

• Performance Evaluation of OFDM Amplify-and-Forward Relay System with Subcarrier Permutation

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