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In a cooperative network, the adverse effect of fading is tackled with the assist of intermediate node using spatial diversity. The system model consists of an origin node (O), an intermediate node (I) and a final node (F). In this paper, we derive an end to end symbol error probability (SEP) for the proposed novel max-min switched diversity scheme over a correlated Nakagami-m fading channels. The...
Adaptive relaying effectively utilize the user for relaying adhering to the channel variation. Thus adaptive relaying is preferred over fixed relaying, in order to improve the performance of cooperative diversity. This paper investigate the threshold based selective relaying, where the relay forward the source signal only when the instantaneous Signal to Noise Ratio (SNR) is above the threshold. In...
We consider a cooperative diversity system that consisting of a source, a relay and a destination. The source transmits its data to the destination as well as through relay with the help of decode and forward technique. We propose a new diversity combining technique which we call it as a “switched-selection combining”, in which, we choose the signal from source-to-destination link if instantaneous...
Cooperative diversity is one of the emerging areas in modern wireless network, where each user transmits their own data to the base station and also serves as a relay for other user. For the purpose of relay selection and cooperation, protocols are needed to form groups. Grouping is done based upon the instantaneous Signal to Noise Ratio (SNR) of user to base station channel and the corresponding...
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