International Journal of Scientific and Research Publications, Volume 7, Issue 5, May 2017 284 ISSN 2250-3153 www.ijsrp.org HB-SOR: Hybrid Bat Spectrum Map Empowered Opportunistic Routing And Energy Reduction For Cognitive Radio Ad Hoc Networks (CRAHNs) Hesham Mohammed Ali Abdullah Research Scholar, PG & Research Department of Computer Application, Hindusthan College of Arts &Science, Coimbatore, India heshammohammedali@gmail.com Dr.A.V.Senthil Kumar Director, PG & Research Department of Computer Applications, Hindusthan College of Arts & Science Coimbatore, India avsenthilkumar@yahoo.com ABSTRACT: Cognitive Radio becomes a new technology for increasing the spectrum efficiency by means of creating opportunistic transmission links. Maintaining the routing information to opportunistic links is designed for packet transmission in a CR Ad Hoc Network which consists of cooperative relay multi-radio systems. this paper proposes a new CR routing Protocol (CRP) for CRAHN with the purpose of distinctively addresses the end-to-end performance in terms of throughput and delay. Hybrid Bat Spectrum map empowered Opportunistic Routing (HB-SOR) algorithm to compact with transmission delay over opportunistic links. A probable investigate HABC-SOR algorithm be able to study the relationship among end-to-end delay and throughput. Based on the theoretical definition of HB-SOR protocol, it is simulated to normal and large-scale CRAHNs among wireless fading channels, utilize a cooperative networking procedure to allow multipath communication between nodes with consistent end- to-end transportation. In addition the proposed HB-SOR protocol also calculates the energy value of the received signal inside the bandwidth threshold and time period. Here the computed energy is compared to a predefine threshold to find the current status (presence/ absence) of the transmitted signal. From the simulation results it confirm that proposed HB- SOR protocol results less end to- end delay , high throughput and less communication overhead appropriate to theoretical examination. Keywords: Cognitive Radio (CR) networks, cooperative relay, Dynamic Spectrum Access (DSA), opportunistic routing, spectrum map, Hybrid Bat based Spectrum map empowered Opportunistic Routing (HB-SOR). I. INTRODUCTION Advanced development and usage of wireless technologies and wireless communications such as 3G cellular phone, laptop, and tablet PC in the world, they require more spectrum resources. But in the present spectrum structure, each and every one of the frequency bands are completely assigned to particular services, and it is easily destructed by unlicensed users. The Federal Communications Commission (FCC) has designated with the intention of the percentage of the assigned spectrum with the purpose is occupied simply from 15 to 85