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What is Digital Signal Processor (DSP)

Handbook of Research on Software-Defined and Cognitive Radio Technologies for Dynamic Spectrum Management
A digital signal processor (DSP) is a specialized microprocessor with an architecture optimized for the operational needs of digital signal processing which is a subfield of signal processing. It is the processor to mathematically manipulate an information signal to modify or improve it in some way very rapidly. It can process data in real time, making it ideal for applications that can’t tolerate delays. It uses video, voice, audio, temperature or position signals that have been digitized and mathematically manipulate them so the information contained in them can be displayed or converted to another type of signal.
Published in Chapter:
Fundamentals of Software Defined Radio and Cooperative Spectrum Sensing: A Step Ahead of Cognitive Radio Networks
Jyoti Sekhar Banerjee (Bengal Institute of Technology, India) and Arpita Chakraborty (Bengal Institute of Technology, India)
DOI: 10.4018/978-1-4666-6571-2.ch019
Abstract
Software Defined Radio (SDR) and Cognitive Radio (CR) are the key enabling technologies to overcome the spectrum scarcity problem a bit, by supporting dynamic spectrum access in which either a network or a wireless node reconfigures its transmission or reception parameters to communicate efficiently, avoiding interference with licensed or unlicensed users. CR senses the environment and enables a secondary system to share the licensed spectrum with the primary system, which usually has exclusive access. The performance of the secondary system could be enhanced by Cooperative Spectrum Sensing (CSS) as it increases the primary detection probability. Again cognitive radio network greatly benefits from a cooperative transmission, employing intermediate nodes as relays. This chapter is focused on software defined radio, its architecture, limitations, then evolution to cognitive radio network, architecture of the CR, and its relevance in the wireless and mobile ad-hoc networks. Additionally, an overview of Cooperative Spectrum Sensing (CSS), its classification, components, challenges, and Cooperative Relay are discussed.
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More Results
A Complex Non-Contact Bio-Instrumental System
A?specialized, programmable computer processing unit that is able to perform high-speed mathematical processing. DSP refers to manipulating analogue information that has been converted into a digital (numerical) form.
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Cognitive Radio Programming Survey
Specialized microprocessor with an architecture optimized for the operational needs of digital signal processing.
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