Optimal power allocation in a multi-hop decode-and-forward communication system
Dhaka K, Mallik RK, Schober R (2012)
Publication Type: Conference contribution
Publication year: 2012
Journal
Pages Range: 4458-4462
Conference Proceedings Title: IEEE International Conference on Communications
Event location: CAN
ISBN: 9781457720529
Abstract
This paper analyzes optimal power allocation schemes for a multi-hop decode-and-forward relay system in a Rayleigh fading environment at high signal-to-noise ratio. Analysis is done for two kinds of modulation schemes: M-ary phase-shift keying with coherent detection and orthogonal M-ary frequency-shift keying with noncoherent detection. An optimal power allocation scheme based on end-to-end symbol error probability is derived for asymmetric relay placement and it is found that for fixed asymmetric relay locations equal power allocation is not optimal. When we have global channel state information at each node, a scheme for optimal power allocation based on relay link quality is also derived. Simulation results for a multi-hop system with optimal power allocation show significant improvement in performance compared to those of a system with equal power allocation. The gap in performance increases further with increase in number of relay nodes. © 2012 IEEE.
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Canada (CA)
India (IN)How to cite
APA:
Dhaka, K., Mallik, R.K., & Schober, R. (2012). Optimal power allocation in a multi-hop decode-and-forward communication system. In IEEE International Conference on Communications (pp. 4458-4462). CAN.
MLA:
Dhaka, Kalpana, Ranjan K. Mallik, and Robert Schober. "Optimal power allocation in a multi-hop decode-and-forward communication system." Proceedings of the 2012 IEEE International Conference on Communications, ICC 2012, CAN 2012. 4458-4462.
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