2006 IEEE International Conference on Communications 2006
DOI: 10.1109/icc.2006.255351
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Hybrid Forwarding Scheme for Cooperative Relaying in OFDM Based Networks

Abstract: In this paper, we propose a hybrid forwarding scheme for cooperative relaying in orthogonal frequency division multiplexing (OFDM) based networks. The proposed hybrid forwarding scheme changes the type of the forwarding scheme used by a relay terminal on a per sub-carrier basis. It adaptively decides to use either "Amplify and Forward (AF)" or "Decode and Forward (DF)" or "no relay" according to the instantaneous Signal to Noise Ratio (SNR) conditions between the source, relay and destination terminals. This d… Show more

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Cited by 65 publications
(36 citation statements)
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“…The variance of nondeepfading subcarriers is set to 1 while the variance of subcarriers in deep fade is set to 0.001. We consider three cases where [5,10,15,20, 25] dB, respectively. In each channel realization, we update the optimal α and β with knowledge of channel coefficients and noise variance.…”
Section: Simulation Resultsmentioning
confidence: 99%
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“…The variance of nondeepfading subcarriers is set to 1 while the variance of subcarriers in deep fade is set to 0.001. We consider three cases where [5,10,15,20, 25] dB, respectively. In each channel realization, we update the optimal α and β with knowledge of channel coefficients and noise variance.…”
Section: Simulation Resultsmentioning
confidence: 99%
“…For most existing cooperative OFDM techniques [5,[7][8][9][10]17], the users serving as relays transmit only the data of other users during the cooperation phase. The main difference between the proposed approach and these techniques lies in the fact that each cooperating user transmits a linear combination of the user's own data and also data from the other user.…”
Section: Relation Of Contribution To the Literaturementioning
confidence: 99%
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“…In [9], the authors obtained bounds on pairwise error probability for single antenna OFDM systems employing cooperative convolutional codes. In [10], per subcarrier hybrid cooperation strategies were proposed, with the goal of minimizing the error probability. Methods for subcarrier selection in multihop OFDM systems were developed in [11].…”
Section: Introductionmentioning
confidence: 99%