Allocation of Resources in Radar Spectrum Sharing of Cognitive Networks for 5G Systems

  • G. T. Bharathy, V. Rajendran


Huge demand of wireless linked devices like IoT's, Machine to Machine Communication, Wireless Adhoc Networks, Multicast Networks, leads to the requirement of communication systems with larger bandwidth. Alternatively the spectrum resource is inadequate and is allotted to various services leading to insufficiency of the spectrum. The technology of CRN offers a possible solution to this issue of scarcity of spectrum by dynamically allotting the spectrum to cognitive users during the absence of primary users. Spectrum Sensing and Spectrum Sharing are the vital functions of CRN. The spectrum sensing can either be homogeneous or heterogeneous. In Homogeneous spectrum sensing there is a delay in the process of identification of spectrum holes.  Spectrum sharing schema is a prospective technique to reduce the trouble of spectrum overcrowding by allowing the wireless communication providers to utilize additional spectrum to facilitate the continually mounting bandwidth requirements of commercial consumers. This paper aims in the study and comparative analysis of various spectrum sharing schemas like underlay, overlay and interweave as one of the category and dynamic & cooperative spectrum sharing as other category for comparison, also simulates a radar system model consisting of interfering and non interfering cell sectors with frequency reuse algorithm, depicted as a real time application with sigmoid utility function using Matlab software.