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This paper focuses on the wireless monitoring sensor networks (WMSNs), where provide relay connectivity for the low capacity and power devices to monitor or sense the events in a monitoring area. In this paper, we propose the relay OFDMA resource allocation methods of coloring resource allocation, static resource allocation and dynamic resource allocation to improve the finite resource of time and...
This paper proposes an adaptive resource allocation scheme to cope with heterogeneous traffic for multiuser multiple-input multiple-output orthogonal frequency division multiple access (MU-MIMO-OFDMA). The feature of the proposed approach is to maximize the frame efficiency by simultaneously allocating frequency and space resources under different user's packet size and channel condition. However,...
This paper presents a novel distributed framework to decide the spectrum assignment in a primary cellular radio access network. The distributed nature of the framework allows each cell to autonomously decide (by means of machine learning procedures) the best frequencies to use in order to maximize spectral efficiency, preserve quality-of-service, and generate spectrum gaps, so that secondary cognitive...
In conventional multicell OFDMA systems, generally there is no inner cell interference (INCI). The system throughput is severely degraded by inter-cell interference (ICI), especially at cell edge. To satisfy the performance requirement, ICI must be mitigated effectively. Several schemes have been proposed to handle this problem by coordinating the way to allocate spectrum resource to each cell. Since...
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