Power-optimized amplify-and-forward multi-hop relaying systems
IEEE Transactions on Wireless Communications
Adaptive power allocation for decode-and-forward MIMO-OFDM relay system
WiCOM'09 Proceedings of the 5th International Conference on Wireless communications, networking and mobile computing
Allocation of transmit power in spatially-correlated dual-hop MIMO relay channels
ISCIT'09 Proceedings of the 9th international conference on Communications and information technologies
Power-optimized multi-hop multi-branch amplify-and-forward cooperative systems
ISWPC'10 Proceedings of the 5th IEEE international conference on Wireless pervasive computing
Adaptive resource allocation in multiuser cooperative networks with proportional rate constraints
International Journal of Sensor Networks
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Energy-constrained multihop wireless links are considered, where the total power consumption is minimized under given requirements on the end-to-end bit error rate (BER). As multihop transmissions are known to be able to save transmission energy in a wireless environment, we study the optimal power scheduling schemes over intermediate hops when the source- relays-destination link can be modeled as cascaded binary symmetric channels. The problem is formulated with an end- to-end BER constraint, and the resulting power consumption is compared with that of the individual link requirement strategy where each hop assigns power under a per-link BER constraint. Results show that the proposed joint power scheduling strategy can achieve a maximum power reduction factor of M in an M-hop route.