PANG Lihua, LI Jiandong, ZHANG Yang. Lifetime Optimization for Multi-Source Multi-Relay Cooperative OFDM Systems[J]. Chinese Journal of Electronics, 2012, 21(3): 571-574.
Citation: PANG Lihua, LI Jiandong, ZHANG Yang. Lifetime Optimization for Multi-Source Multi-Relay Cooperative OFDM Systems[J]. Chinese Journal of Electronics, 2012, 21(3): 571-574.

Lifetime Optimization for Multi-Source Multi-Relay Cooperative OFDM Systems

  • Received Date: 2011-08-01
  • Rev Recd Date: 2011-11-01
  • Publish Date: 2012-07-25
  • 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.
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      沈阳化工大学材料科学与工程学院 沈阳 110142

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