Chanchal Kumar De

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In this paper, an adaptive forwarding strategy for wireless networks using multiple relays in general cooperative link is analyzed. Two schemes, amplify-and-forward (AF) and decodeand-forward (DF) are investigated depending on channel conditions. Further a hybrid scheme employing multiple relays which allows switching between the two schemes according to(More)
In this paper, an adaptive forwarding strategy for wireless networks using relays in multi hop and cooperative network is analyzed. Two schemes, amplify-and-forward (AF) and decode-and-forward (DF) are investigated depending on channel condition. Further it allows switching between the two schemes according to channel condition. The bit error probability(More)
Performance of a cooperative spectrum shearing with the help of a multi-antenna based cognitive relay (CR) employing best relay selection strategy is analyzed in presence of non-identical Rayleigh fading channel in this paper. A cognitive relay equipped with multiple antennas at the input employs selection combining (SC) on the signals received from(More)
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