Impact of multipath fading on spectrum sensing in vehicular communication environment
Christopher Chembe, Ismail Ahmedy, Rafidah Md Noor, Douglas Kunda · 2018
Dynamic spectrum access (DSA) has received much attention in research community recently. DSA is the concept in which communication devices of unlicensed users are allowed to access underutilized spectrum in licensed frequency bands. DSA relies on cognitive radio (CR) technology to identify the free spectrum bands in licensed channels through spectrum sensing. In vehicular communications, spectrum sensing is affected by the speed of vehicles, multipath fading and shadowing. In this paper, we show the impact of fading on spectrum sensing in vehicular communications. Understanding how the fading environment affects spectrum sensing will help in developing sensing techniques that can prevent interference in licensed channels while allowing for utmost reuse of radio frequency through DSA.