In a cognitive radio network (CRN), secondary users (SUs) utilize primary users (PUs) licensed spectrum in an opportunistic\nmanner. Spectrum sensing is of the utmost importance in CRN to find and use the available spectrum without harmful interference\nto the PUs. Conventionally, to implement spectrum utilization, SUs are required to sense the primary spectrum first and then\ntransmit data on the available spectrum. In this paper, we propose a dedicated wireless spectrum sensing network (WSSN),\neliminating sensing overhead from SUs with the aim of improving achievable throughput. With WSSN assistance, we eliminate\nsensing time fromthe SUs frame, hence increasing the transmission time,whichmaximizes the achievable throughput.Additionally,\nthe sensing duration is increased by deploying a dedicated WSSN, decreasing the probability of false alarm and achieving a\ntargeted high probability of detection. A low probability of false alarm increases the spectrumutilization, improving the achievable\nthroughput, while a high detection probability ensures PUs protection. Moreover, the proposed technique also addresses hidden\nand exposed terminal problems along with smooth spectrum mobility. Finally, we provide simulation results to demonstrate the\nproposed techniques, effectiveness. In the results, we have compared the achievable throughput of the proposed scheme with that\nof conventional CRN.
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