An improved cognitive radio system algorithm for wideband Satellite- Terrestrial Wireless Mobile Network

Abstract

The integration of Satellite-Terrestrial networks to archieve wideband services is one among the challanges posed for Fifth Generation (5G) Wireless Mobile Communication (WMC).This research aimed at synergizing Satellite-Terrestrial Mobile Networks using Centralized Cooperative Spectrum Sensing (CCSS) technique of Cognitive Radio Network (CRN). The CCSS adopted in this work is the Listen-before-Talk (LbT) proactive method. The required threshold and waveform was attained using Feedback Filtered Orthogonal Frequency Division Multiplexing (FF-OFDM) novel scheme as an antidote. The results were validated and compared with those of Spread Slotted ALOHA (SSA) cognitive induced scheme using data transmission efficiency and throughput as performance measures. The throughput of the FF-OFDM CR system with packets transmitted (P_tra) was tested under null detection probability (P_nd) in a fixed channel state, false alarm probability ₍P_fa) in a fixed channel state, and P_fa in dynamic channel state; it was found to achieve an improvement over SSA CRN system by 81%, 83.4%, and 88.4%, respectively.