Abstract
The radio signal processing capability can be provided by Universal software radio peripheral (USRP) hardware. The received signal frequency can be controlled and transmitting the signal through wireless is possible by installing NI USRP utility configuration. The programmable USRP was running VI snippet program in block diagram panel with radio companion integrated through USB cable on windows 7 64 bit OS. With the parameters such as IQ rate, transmitter gain, carrier frequency along with device name which is given as ni2901_1 the students can able to tune the radio signal. In addition to this the students can able to record the FM signal and extract the IQ data and plot the spectrum of signal and analyze it using graph palette. The standard FM equation contains the modulation index, carrier frequency, message signal amplitude, frequency deviation and frequency sensitivity can also analyzed using LabVIEW. By using Carson’s rule the bandwidth of wideband FM signal can be calculated. In this project RF0 module is used USRP device is connected with dual band vertical antenna with 2.4 and 5GHz frequency as Tx1 and the receiver is connected to Tri band vertical antenna with 144, 400 and 1200 MHz. while transmitting red color will blink in the device for transmitting and green color indicates the received signal. The purpose of doing this experiment was to gain experience in signal processing and receive hands on experience with the USRP. This VI snippet program will support all file formats. Up sample we used in front panel should be -1 always and if large size files is transmitted the value should be increased. The iPhone received the signal with high quality using ear pods the students can able to listen all the information which is transmitted through USRP. Here the transmitted frequency we used in the front panel is 94.7 MHz. The transmitted signal through USRP is successfully tested in the campus of Institute of Aeronautical Engineering, Hyderabad, India.
Highlights
FM broadcasting is a method of radio broadcasting using frequency modulation (FM) technology
With the assistance of Software-defined radios (SDRs) pack, the usage of FM framework turns out to be exceptionally basic since it replaces all equipment that is utilized as a part of the customary correspondence framework with programming
SDR has a great deal of potential for executing the developing remote applications
Summary
FM broadcasting is a method of radio broadcasting using frequency modulation (FM) technology. One of the advantages that joins having the capacity to get to DAB broadcasting is that not at all like conventional FM radio telecom where you need to recollect the radio station recurrence to tune in, DAB records radio stations by their names in order arrange. After being the subject of speculation for many years, a software-defined radio receiver concept has emerged that is suitable for mobile handsets. A key step forward is the realization that in mobile handsets, it is enough to receive one channel with any bandwidth, situated in any band. LabVIEW interacts with the USRP transmitter by means of four functions located on the block diagram’s palette under Hardware Interfaces is taken from this manual [12]
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