As a growing trend of my writing series, I present you with another rendition of well the wireless technologies in the domain of Cognitive radio networks.
What the hell is this?
A cognitive radio :
It is a Dynamically changing radio that in theory can access the best available wireless channels and avoid interference and congestion of traffic. How it does that is a little more challenging but Relying on the principles of Dynamic Spectrum Management (a set of techniques that employs AI, ML and cross-layer optimization: It relies on the idea when primary entities are absent a licensed spectrum is made available to unlicensed users ) somewhat similar to a cognitive process that happens inside our brain.
Well, the reason these cognitive radios exist is simple. To use the underutilized spectrums in the communication of messages. Inside a traditional radio network, there are fixed bands that each radio is a constraint too. This fixation of bands has to lead to the sub-par performance in the much wider domains of contestation for bands and the congestion of spectrums and most of the networks are then unable to work intelligently. i.e they only do/look after a problem that has occurred rather than working to avoid the occurrence first As the world has progressed further, we have been trying to optimize these wavebands reasons can be attributed to the increased connection points for communication I mean as compared to the previous years [insert facts] there has been an increase in devices. Thus, regular radio has started showing its age.
What is a network?
A computer network is a group of computers that use a set of common communication protocols over digital interconnections for the purpose of sharing resources located on or provided by the network nodes.
Is it the future?
Well, the answer is pretty complicated. Security is one big issue that remains the deciding factor in choosing a cognitive radio over a traditional one. There could be a situation where a licensed spectrum is in use by a non-licensed user thus undermining the integrity of the network. Moreover, it assumes that the techniques are scalable across multiple spectra which is not true each spectrum is unique in some regards
As this study points out
For instance, television is a broadcast system with passive receivers, while cellular networks typically include bi-directional asymmetric1 transmissions. Such very different types of primary services create very different kinds of spectrum holes as well, which require different treatment.
Pelechrinis, Konstantinos & Krishnamurthy, Prashant & Weiss, Martin & Znati, Taieb. (2012). Cognitive Radio Networks: Realistic or Not?. arXiv preprint arXiv:1209.2154. 43. 10.1145/2479957.2479965.
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