The Development Of Software Defined Radio ( SDR )

0 Use the Internet to research one to two applications of the illustrated wireless technology. List each application found. Be sure to reference the Web site(s) where you found this information.

Using the COM-5102, the SDR will transmit the radio signal, this pulg in will add associated MAC addresses and UDP headers onto the project automatically [15]. The VHDL code has values that can be changed slightly to accommodate UDP or TCP transmission. For the project, UDP headers will be used.

ANS: The entire process is performed by multiplying a radio frequency carrier and a pseudo-noise (PN) digital signal. The PN code is modulated onto an information signal using several modulation techniques such as quadrature phase-shift keying (QPSK), binary phase-shift keying (BPSK), etc. A doubly-balanced mixer then multiplies the PN modulated

So back to the basic, what is FM? FM is stand for frequency modulation, which used changes in frequency to carry the sound or other information that is required to be placed onto the carrier. The advantages that made FM widely used for many broadcasting and mobile applications are:

In fact, mobile radios has become such a key tool in all business communications that one of the FCC’s major challenges is ensuring efficient and effective use of the radio spectrum by business, while guaranteeing the reliability and interoperability of all public safety radio uses. In finding a way to make this all work, the FCC helps make America a safer and better place to

On the receiving end, the demodulator works by detecting one or both of the frequencies, often with a band-pass filter, regenerating the input signal. You can also use a signal processor to convert the carrier from time domain to frequency domain with a fourier transform, and then pick off the signal that way.) The FSK method of modulating/demodulation is typically limited to low frequency signal rates, such as 300 bits per second

An FM system: it works similarly, but the sound is conveyed through radio waves to a personal receiver (Reber, 2013).

frequencies which helps avoid some of the single frequency problems. It can usually transmit at only around 250 kps.

AM (Amplitude Modulation) is the original way of broadcasting radio. Lee de Forest and Reginald Fessenden are given credit for the development of the technique which was carried out successfully for the first time in the mid-1870s, its frequency ranges from 535 to 1705 KHz and the typical bandwidth of an AM channel is 10 kHz. The name ‘AM’ itself gives a clear indication to the type of modulation technique used; Amplitude Modulation. Amplitude Modulation is a modulation technique which works is by modifying the carrier wave’s strength by increasing or decreasing its peaks in line with the variations of the input sound; the strength of the wave is known as amplitude, through all of this the frequency remains constant – the same. This type of modulation technique is more susceptible to noise and or interference due to the fact noise effects amplitude directly. The change in signal strength allows the conveyance of information through the radio wave that is sent out via a transmitter and is received by a radio device otherwise known as the receiver. When the signal is received, demodulation takes place; this can be dealt with in two ways depending on the device. Either a Diode AM detector will carry out the demodulation (which is

Bluetooth is a wireless short-range communication system introduced to connect portable electronic devices. Bluetooth has developed a world wide and open short-range radio specification aiming at communication between the Internet and Net devices, it defines the communication protocols between computers and various other devices. In order to make the various devices like computers other or related equipments more user friendly, there will always be a strong need for better method for all the electronic devices to communicate using low-power and short-ranged wireless links. . The technology uses Frequency-Hopping Spread-Spectrum (FHSS) Communication in 2.4-GHz industrial,scientific, and medical band, in which devices are allowed to communicate.

Repeaters for digital TV broadcasting can use either analogue or digital techniques. The purpose of using repeater is to boost signals into areas of weak coverage in any radio communication system. However wave interference means the repeater usually requires a frequency shift for analogue modulated signal. For digitally modulated signal it may be possible to use same frequency.

Orthogonal frequency division multiplexing has also been adopted for a number of broadcast standards from DAB Digital Radio to the Digital Video Broadcast standards, DVB. It has also been adopted for other broadcast systems as well including Digital Radio Mondiale used for the long medium and short wave bands.

A software defined radio is a radio that can be used for wireless communication that can be programmed by a computer. It is typically a radio communication technology in which wireless communication protocols implemented without the actual usage of wires. The great advantage of using software defined radios are that they can be re-configured. Therefore, it can be used to update the protocol with ease. For

Wireless communication is nowadays widely utilized in many high-performance devices and remote sensing systems, comprising radar sensors

I Saksham Gupta student of B.Tech Electronic and Communication hereby declare that the project titled “Software defined radio for RFID” which is submitted by me to Department of Amity School of engineering and technology (ASET), Amity University Uttar Pradesh, Noida, in partial fulfillment of requirement for the award of the degree of Bachelor of Technology in B.Tech Electronic and Communication, has not been previously formed the basis for the award of any degree, diploma or other similar title or recognition.The Author attests that permission has been obtained for the use of any copy righted material appearing in the Dissertation / Project report other than brief excerpts requiring only proper acknowledgement in scholarly writing and all such use is acknowledged.