Abstract :
A device which acts like a radio for a minute, a cell phone the next, a wireless internet gadget the next, and a GPS receiver another is no more quixotic. Software radio is the solution. It is an important emerging technology in wireless communication services.
Software radio system is a radio communication system which can tune to any frequency band and receive any modulation across a large frequency spectrum by means of a programmable hardware which is controlled by software . These cognitive radios can utilize the RF spectrum in their immediate neighborhood, and configure themselves as required by user. This paper deals with:
- Evolution
- Necessity
- Operating principles
- Design and control
- Applications of software radio.
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