Proposal and Analysis of a New Spectrum Sensing Algorithm for Cognitive Radio Driven Hospitals

Year 2016, Special Issue (2016), 48 - 51, 01.12.2016

Amir Eslami , Saeid Karamzadeh

https://doi.org/10.18100/ijamec.263962

Cited By: 1

Abstract

Wireless technology is the key technology to eliminate the dense wire
ropes from hospitals and far access to medical devices. In order to overcome
the problem of bandwidth scarcity, cognitive radio driven hospitals are
introduced and devices are divided in two categories. The first category is
primary devices and the second one is secondary devices. Primary devices has
very high priority and their communication is vital for the hospital and
patients, so that no interference should be made with such devices. Secondary
devices are the ones which has lower priority and they can wait until the
primary devices do their communication and then, they begin to use the
allocated spectrum. One of the key functions to assure that there will be no
interference is a reliable spectrum sensing method. This method should be a
simple one to be able to implement it in the secondary devices. Among all the
sensing methods, energy detection (ED) based spectrum sensing is very popular.
In order to improve the performance of ED, double threshold ED (DTED) method is
introduced in literature. In this paper, a new algorithm is intruded for DTED
considering previous sensing period results in detection procedure by using a
memory stick. Memoryful DTED (MDTED) improves the performance of DTED
considerably by only the cost of delay in secondary devices communication which
has less value than the improvement of the detection method performance.

Keywords

Wireless technology hospitals, Cognitive radio driven hospitals, Spectrum sensing, Energy detection, Double threshold energy detection, memory

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