ZHANG Yan, SHENG Min, LI Jiandong, et al., “Network Lifetime Optimization under QoSConstrains for Coded Cooperative Networks byDynamic Resource Allocation,” Chinese Journal of Electronics, vol. 19, no. 2, pp. 296-302, 2010,
Citation:
ZHANG Yan, SHENG Min, LI Jiandong, et al., “Network Lifetime Optimization under QoSConstrains for Coded Cooperative Networks byDynamic Resource Allocation,” Chinese Journal of Electronics, vol. 19, no. 2, pp. 296-302, 2010,
ZHANG Yan, SHENG Min, LI Jiandong, et al., “Network Lifetime Optimization under QoSConstrains for Coded Cooperative Networks byDynamic Resource Allocation,” Chinese Journal of Electronics, vol. 19, no. 2, pp. 296-302, 2010,
Citation:
ZHANG Yan, SHENG Min, LI Jiandong, et al., “Network Lifetime Optimization under QoSConstrains for Coded Cooperative Networks byDynamic Resource Allocation,” Chinese Journal of Electronics, vol. 19, no. 2, pp. 296-302, 2010,
Network lifetime optimization is a vital and challenging design issue for battery-operated wireless net- works, which guarantee uninterrupted information trans- mission in wireless networks. Fortunately, emerging as a new communication paradigm, cooperation communica- tion provides an e®ective way to share resource among net- work nodes that can be used to extend network lifetime. In this paper, the dynamic resource allocation strategies are introduced to optimize the network lifetime under Qual- ity of service (QoS) constraints for coded cooperative net- works, which consider power control, multi-relays selec- tion and Level of cooperation (LOC) adjustment jointly. An optimization model for minimizing and balancing the energy consumption under QoS constrains is formulated based on a TDMA scenario. When the LOC is constant, the closed form optimal solution is got by Karush-Kuhn- Tucker (KKT) conditions, which results in an optimal re- source allocation strategy. Based on the solution, a sub- optimal scheme is further proposed for a variable LOC. Simulation results show that our schemes can dramatically prolong network lifetime and support higher QoS levels compared with other existing cooperative resource alloca- tion schemes.
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