Abstract
Cognitive Radio (CR) is an emerging technology to exploit the existing spectrum dynamically. It can intelligently access the vacant spectrum frequency bands. Although a number of methodologies have been suggested for improving the performance of CR networks, little attention has been given to efficient usage, management and energy efficiency. In this paper, a modern paradigm pertaining to the spectrum allotment and usage, manifested as CR, has been introduced as a potential solution to this problem, where the CR (unlicensed) users can opportunistically deploy the available free licensed spectrum bands in such a way that restricts the degree of interference to the extent that the primary (licensed) users can allow. In this article, we analysis and compare various protocols, in addition, we evaluate CREAM MAC, RMC MAC, SWITCH MAC, EECR MAC protocols related to the CR MAC in term of different parameters such as throughput, data transmission and time efficiency. We conclude the most efficient protocol, which have similar features named as Proposed Efficient Cognitive Radio MAC (PECR-MAC) protocol.
Highlights
There has been an escalation in wireless technology due to increasing demand of wireless services and gadgets, which has led to the Scarcity and crowding of prevailing spectrum
It is concluded that the simulation results show that Cognitive Radio (CR) protocols such as CREAM, SWITCH, RMC and EECR MAC protocols were presented and described in this paper
It is concluded that CREAM MAC has high throughput, but it did not consider the Backup Channel
Summary
There has been an escalation in wireless technology due to increasing demand of wireless services and gadgets, which has led to the Scarcity and crowding of prevailing spectrum. This persuasion of the excessively congested spectrum is not due to the paucity of the spectrum, but due to the inefficient usage and static management policies of the spectrum. Software defined radio (SDR) is used in radio devices is propound by Joseph which was not used in radio devices before. This software is used in all the devices
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