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In spectrum aggregation (SA), two or more component carriers (CCs) of different bandwidths in different bands can be aggregated to support wider ransmission bandwidth. CC selection is the new radio resource management (RRM) functionality introduced in LTE- Advanced. The current CC selection schemes do not consider the cognitive radio (CR) condition and are not suitable for CC selection in CR. Consequently,...
Long Term Evolution (LTE) has been proposed as a promising radio access technology to bring higher peak data rates and better spectral efficiency. However, scheduling and resource allocation in LTE still face huge design challenges due to their complexity. This paper divides the complex problem into three sub-problems: scheduling pattern, scheduling priority and quantity of scheduled data. Based on...
In recent years, network coding has been paid much attention to as information rate can achieve the max-flow bound by using it; meanwhile, it could increase throughput, minimize time delay and save energy of a network. Network Address Translation (NAT) is widely used as a way to save IP addresses; however, the traditional scheme of NAT has a poor data forwarding efficiency and low throughput. In this...
Cooperative communications is widely used to share the resources of different nodes, and achieve spatial diversity gain in multi-user network. The node which is chosen as cooperative node (cluster-head), consumes more transmit power for other nodes than itself. Because of this, traditional algorithm results in uneven power distribution. In this paper, we propose a new algorithm called weighted clustering...
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