A Software Defined Radio (SDR) system is a radio communication system where components that have typically been implemented in hardware (i.e. mixers, filters, amplifiers, modulators/demodulators, detectors. etc.) are instead implemented using software on a personal computer or other embedded computing devices. While the concept of SDR is not new, the rapidly evolving capabilities of digital electronics are making practical many processes that were once only theoretically possible. A basic SDR may consist of a computer (PC) equipped with a sound ....etc

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Whatâ„¢s the Software Defined Radio

Software Defined Radio (SDR) refers to the technology wherein software

modules running on a generic hardware platform consisting of DSPs and

general purpose microprocessors are used to implement radio functions

such as generation of transmitted signal (modulation) at transmitter

and tuning/detection of received radio signal (demodulation) at

receiver.¦a radio that includes a transmitter in
which the operationg parameters of the
trans ....etc

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Introduction

Software-Defined Radio (SDR) Forum defines SDR technology as radios that provide software control of a variety of modulation techniques, wide-band or narrow-band operation, communications security functions (such as hopping), and waveform requirements of current & evolving standards over a broad frequency range.

In a nutshell, Software-Defined Radio (SDR) refers to the technology wherein software modules running on a generic hardware platform consisting of DSPs and general purpose microprocessors are used to implement radio ....etc

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LOYOLA INSTITUTE OF TECHNOLOGY & MANAGEMENT
Department of Electronics and Communication Engineering
Technical Seminar on

GMSK DEMODULATOR USING COSTAS LOOP FOR SOFTWARE-DEFINED RADIO

ABSTRACT

DSP based implementation of Gaussian Minimum Shift Keying (GMSK) demodulator using Costas loop has been described. The demodulator consists of a Costas loop for carrier recovery, data recovery, and phase detection. For low data rates, ....etc

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Definition
Software-Defined Radio (SDR) Forum defines SDR technology as radios that provide software control of a variety of modulation techniques, wide-band or narrow-band operation, communications security functions (such as hopping), and waveform requirements of current & evolving standards over a broad frequency range.

In a nutshell, Software-Defined Radio (SDR) refers to the technology wherein software modules running on a generic hardware platform consisting of DSPs and general purpose microprocessors are used to implement radio fun ....etc

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Software defined radio abstract and conclusion
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Software-Defined Radio (SDR) refers to the technology wherein software modules running on a generic hardware platform consisting of DSPs and general purpose microprocessors are used to implement radio functions such as generation of transmitted signal (modulation) at transmitter and tuning/detection of received radio signal (demodulation) at receiver.


http://ziddudownload/5626513/PresentationofSoftwareDefinedRadio.ppt.html ....etc

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ABSTRACT
The ability to support multiple communications channelsper RF band is a fundamental process for many softwaredefined radio platforms. These platforms typically employa channelizer to extract channels from the received RFband for follow-on baseband processing, or to insertchannels into the RF band for transmission. This paperwill compare and contrast three of the more popularchannelization techniques: Digital Down Conversion,Frequency Domain Filtering, and Polyphase FFT FilterBanks. The analysis begins by presenting a basearchi ....etc

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