गौरी प्रतिष्ठापना नंदनवनात  सौ  अरुणा व सौ माधुरी यांनी  केली५ सप्टेंबर २०११

ganapati aarti Lata Mangeshkar

Ganapati AtharvaSheersha

THERE IS ANEED TO COLLECT, ANALISE AND STORE THE DATA OF EVERY PATIENT WHO VISIT THE CLINIC OF A PHYSISIAN. THIS CONCEPT IS GROWING IN USA HOSPITALS AND PRIVATE CLINICS.
THIS WILL GENERATE HUGE DATA BASE. THIS THUS COULD BE USEFUL FOR DIAGNOSIS OF A PATIENT IN FUTURE,IF NECESSARY, AND ALSO HELP HIM WHEREVER PATIENT IS LOCATE TH

COGNITIVE RADIO

•Cognitive radio (CR) is a form of  wireless communication in which a transceiver can intelligently detect which communication channels are in use and which are not, and instantly move into vacant channels while avoiding occupied ones.

• This optimizes the use of available radio-frequency (RF) spectrum while minimizing interference to other users.

•In its most basic form, Cognitive Radio  is a hybrid technology involving software defined radio (SDR) as applied to spread spectrum communications. 

 

•Possible functions of cognitive radio include the ability of a transceiver to determine its geographic location, identify and authorize its user, encrypt or decrypt signals, sense neighboring wireless devices in operation, and adjust output power and modulation characteristics.

There are two main types of cognitive radio:-

•Full cognitive radio

•Spectrum-sensing cognitive radio.

•Full cognitive radio takes into account all parameters that a wireless node or network can be aware of.

•Spectrum-sensing cognitive radio is used to detect channels in the radio frequency spectrum.

• It is  a  radio which autonomously detects and exploits empty spectrum to  increase file transfer rate.

•This same radio could remember the  locations where your calls tend to drop and arrange for your call to be serviced by a different carrier for those locations.