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An expression of correlation function of channel coefficients when one-ring scattering model is derived. Based on the correlation function a recursive model of channel coefficients is obtained. A nonrecursive algorithm of channel filtration is derived with Wiener filtration theory.
This paper presents the possibility of using methods of graph theory for analysis and design of reconfigurable antennas. The Sirepinski fractal dipole antenna with MEMS switches was analyzed. By changing of the flow of surface currents, the frequency characteristics of the antenna is changed. As the reconfigurable antenna is set of independent parts, graph theory can be used to connect all possible...
Network diversity multiple access or NDMA is the family of algorithms with the highest potential throughput in the literature of signal-processing-assisted random access. NDMA uses the concept of protocol-induced retransmissions to create an adaptive source of physical (PHY) layer diversity. This adaptive diversity is used to resolve packet collisions (via signal separation) without the explicit need...
The future generation of wireless networks is expected to support a significantly large amount of mobile data traffic, massive number of wireless connections and devices, achieve better cost, increased energy and spectral efficiency, improved quality of service (QoS) in terms of communication delay, capacity, reliability and security. The main techniques that will enable these features are massive...
In this paper produced effect investigation of thermal and phase noise of frequency synthesizer complex on error of MIMO channel coefficients estimation. Dependence of channel coefficients estimation errors on time mismatch when channel coefficients testing is analyzed. Employment of technique time-division multiplexing is justified. Calculated to dependencies of error estimation on accepted signal...
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