PANG Lihua, LI Jiandong, ZHANG Yang, “Lifetime Optimization for Multi-Source Multi-Relay Cooperative OFDM Systems,” Chinese Journal of Electronics, vol. 21, no. 3, pp. 571-574, 2012,
Citation:
PANG Lihua, LI Jiandong, ZHANG Yang, “Lifetime Optimization for Multi-Source Multi-Relay Cooperative OFDM Systems,” Chinese Journal of Electronics, vol. 21, no. 3, pp. 571-574, 2012,
PANG Lihua, LI Jiandong, ZHANG Yang, “Lifetime Optimization for Multi-Source Multi-Relay Cooperative OFDM Systems,” Chinese Journal of Electronics, vol. 21, no. 3, pp. 571-574, 2012,
Citation:
PANG Lihua, LI Jiandong, ZHANG Yang, “Lifetime Optimization for Multi-Source Multi-Relay Cooperative OFDM Systems,” Chinese Journal of Electronics, vol. 21, no. 3, pp. 571-574, 2012,
This communication presents a resource allocation strategy for maximizing the lifetime of Amplifyand- forward (AF) dual-hop cooperative OFDM networks. The high computational complexity for optimization necessitates our study of suboptimal approaches. Our centralized scheme is implemented in two steps. Specifically, during each transmission interval, source-relay selection and subcarrier pairing can be decided according to channel state information of the relay links and residual energy information at each terminal. Next, energy-aware power loading can be solved by employing standard Lagrange techniques. Numerical examples verify the effectiveness of our proposal.