Each mobile uses a separate, temporary radio channel to talk to the cell site. The cell site talks to many mobiles at once, using one channel per mobile. Channels use a pair of frequencies for communication. One for transmitting from the cell site, the forward link, and one frequency for the cell site to receive calls from the users, the reverse link. Communication between mobile units can be either half-duplex or full-duplex. In case of half-duplex, transmit and receive communications between the mobile units are not at the same time, i.e. tal ....etc

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Hii.. Am prabha pujari studying BE 8th sem in appa college..i want to do seminar on PMR so i want more information about seminar topic PMR (Private Mobile Radio) Revolution.. also i want some more topic information like Embedded Webserver,Cryptography.

send to my email id as soon as possible waiting for reply.. ....etc

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ABSTRACT
A single-chip CMOS Global Positioning System (GPS) radio has been integrated using only a couple of external passive components for the input matching network and one external reference for the synthesizer. The receiver downconverts the GPS L1 signal at 1575.42 MHz to an IF of 9.45 MHz. The complete front-end and frequency synthesizer section have been integrated: low noise amplifier, image rejection mixer, IF active filter, and the full phase-locked loop synthesizer, including voltage-controlled osci ....etc

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give me details about cellular radio its design considerations working principles applications ....etc

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To get full information or details of radio broadcasting system design and application please have a look on the pages

http://seminarsprojects.net/Thread-digital-audio-broadcasting?pid=71099&mode=threaded

http://seminarsprojects.net/Thread-radio-broadcasting-system-design-and-application-pdf

if you again feel trouble on radio broadcasting system design and application please reply in that page and ask specific fields in radio broadcasting system design and application ....etc

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Hii i am in need of full seminar report on MOBILE TRAIN RADIO COMMUNICATION.
I request u to do the needful as soon as possible ....etc

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RADIO ASTRONOMY
Introduction:
Study of celestial objects in radio frequency.
Require large radio telescope to observe longer wavelengths.
Study of elements in universe using radio telescope.

Electromagnetic Spectrum:
The electromagnetic spectrum includes radio frequency (RF), infrared (IR), visible light, ultraviolet (UV), X-rays, and gamma rays.
Radiation with shorter wave length-blue light.
Radiation with longer wave length-red light.
Radio waves (EM waves) have 1mm-100km wave length.
....etc

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hello I am Anjana a final yearbtech student (electronics and communication). I am inter ested to seminar on the topic radio astronomy. so please help me by providing me the essential report ....etc

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i am going to take a seminar on cognitive radio,so i need to know more about this topic also i want a seminar report on this topic. ....etc

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ABSTRACT
Today's mobile professionals need to stay in regular contact with important sources of information such as the Internet, email, corporate networks and remote databases. As demand for Wide Area Networking (WAN) connectivity continues to grow, users and organizations are seeking ways to make it more efficient and productive. One of the most promising new technologies for this purpose is General Packet Radio Service (GPRS). GPRS is a packet-switching data network that is overlaid on the existing ce ....etc

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