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Technique | Features | Achievements | Limitations |
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Joint cooperative routing and power allocation for collision minimization in WSNs with multiple flows [17] | Cooperative routing protocol, optimal power allocation to sensor nodes | Collision probability is minimized | High computational cost |
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Energy efficient cooperative communication for data transmission in WSNs [18] | Reliable and efficient data communication cooperative routing protocol | High throughput and reliable data delivery | Mobility of sensor node is neglected; qualified forwarder node selection mechanism is not accurate |
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Performance analysis of cooperative diversity with incremental-best-relay technique over Rayleigh fading channels [19] | Incremental relaying cooperation is implemented | Less probability of error, higher throughput, and reliability | High energy consumption |
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Exploiting cooperative relay for reliable communications in UASNs [20] | Cooperative scheme that increases the throughput and reliability of the network | High network throughput | Nonefficient relay node selection mechanism |
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Optimal and near-optimal cooperative routing and power allocation for collision minimization in WSNs [21] | MINLP problems are solved with branch-and-bound algorithms | Minimizing the end-to-end delay by reducing the search space | Only efficient for predefined network topologies |
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Co-UWSN: cooperative energy efficient protocol for UWSNs [22] | Incremental relay is selected on the basis of distance and SNR of the link | Comparatively less energy consumption | ACK on each packet resulted in high end to delay |
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EECCC (energy efficient cooperative communication in clustered WSNs) [23] | Clustering and cooperative communication in the network | Comparatively less energy consumption with direct communication | High energy consumption in dense deployment due to redundant transmissions |
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Relay selection and optimization algorithm of power allocation based on channel delay for UWSNs [24] | Relay is selected on the basis of BER and propagational delay | Improving the network lifetime | High end-to-end delay |
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Cooperative partner nodes selection criteria for cooperative routing in UWSNs [25] | Partner node selection on the basis of depth threshold and propagational delay | Comparatively high packet acceptance ratio | High energy consumption |
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