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Joint Rate Distribution and Bandwidth Allocation for Energy Efficient Multiuser Parallel Transmission

Wei Wang and Xiaoxiang Wang
Key Laboratory of Universal Wireless Communications, Ministry of Education, Beijing University of Posts and Telecommunications, Beijing, P. R. China
Abstract—In this paper, the method of minimizing the total power consumption for multiuser parallel transmission over multiple radio access networks to improve energy efficiency is investigated. To minimize the power, a new scheme to split users’ data streams and allocate bandwidth properly with constraint conditions is presented. Then the Lagrange multiplier method is brought in to model the scheme. As the optimal value cannot be obtained directly, the gradient projection method is applied to converge to the optimum solution. And based on that, the joint Rate Distribution and Bandwidth Allocation (RDBA) algorithm is proposed to minimize the total power with limited available resource and Quality of Service (QoS) guaranteed. Simulation results validate the performance enhancement of our algorithm.

Index Terms—Parallel transmission, multiuser, energy efficient, rate distribution, resource allocation

Cite: Wei Wang and Xiaoxiang Wang, “Joint Rate Distribution and Bandwidth Allocation for Energy Efficient Multiuser Parallel Transmission," Journal of Communications, vol. 11, no. 2, pp.179-184, 2016. Doi: 10.12720/jcm.11.2.179-184
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