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This paper aims at providing a green battery solution for practical wireless communication systems. First, we discuss the demands and latest developments of wireless energy transfer (WET) in relevant industries. Second, we propose a user- centric energy-efficient approach in wireless powered communication networks (WPCNs), where mobile users first harvest energy from a dedicated power station and...
Heterogeneous cellular networks (HCNs) with embedded small cells are considered, where multiple mobile users wish to download network content of different popularity. By caching data into the small-cell base stations, we will design distributed caching optimization algorithms via belief propagation (BP) for minimizing the downloading latency. First, we derive the delay-minimization objective function...
This paper studies the problem of determining the optimum degree distribution for distributed LDPC codes in two-way relay channels. Based on the framework of multi-edge type (MET) LDPC codes, we propose a methodology to asymptotically optimize the code's ensemble when different segments within the distributed codeword have been transmitted through different channels and experience different SNRs....
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