Diversity techniques can be used to reduce the ill effects of multipath fading observed in wireless channels. Multiple-input-multiple-output (MIMO) technology is a promising application of multiple antennas at both transmitter and receiver to improve communication performance by achieving spatial diversity. The concept of space-time coding has arisen from diversity techniques using smart antennas. With the implementation of data coding and signal processing at both sides of transmitter and receiver, space-time coding now is more effective than traditional diversity techniques. Space-time block codes (STBC) were designed to achieve the maximum diversity order for the given number of transmit and receive antennas subject to the constraint of having a simple linear decoding algorithm. Application of ANNs for STBC decoding is such an area which offers solutions to tackle the intricacies associated with the fluctuations observed in multipath propagation which is always the problem area in wireless communication.
Sleeping difficulty called insomnia, can involve difficulty in falling asleep one who has first go to bed at night, waking up too early in the morning and waking up often during night. The lack of restful sleep can affect your ability to hold out daily responsibilities. All types of insomnia can cause day time drowsiness, poor concentration, and therefore the inability to feel refreshed and rested in the morning. Magnetic flux related to the plannet is termed geo-magnetic fields. It is essentially dipolar on the earth's surface. Many of us experience sleeping well within the natural surroundings into a tent or a wooden hut. This fact is because of not only to the healthy atmosphere but also from our unconscious ability to perceive natural earth's magnetic fields. Our paper is about this sort of geo-magnetic -fields. This has been designed a circuit, which radiates an electromagnetic field which is low frequency through a radiator coil and our aim is to perceive them, in this manner our brain is surrounded by a perfect environment for a sound sleep.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations鈥揷itations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.