[technology development-23]: application of DSP in future converged networks

Preface ：

Digital signal processing （Digital Signal Processing, abbreviation DSP） It is a new discipline that involves many disciplines and is widely used in many fields .20 century 60 s , With the rapid development of computer and information technology , Digital signal processing technology Came into being and developed rapidly . Over the past two decades , Digital signal processing has been widely used in communication and other fields .

Digital signal processing uses Computer or special processing equipment , With Digital form Yes The signal Conduct collection 、 Transformation 、 wave filtering 、 The valuation 、 enhance 、 Compress 、 distinguish Wait for the treatment , To get a signal that meets people's needs .

Digital signal processing It is the theory and technology of digital representation and processing of signals . Digital signal processing and Analog signal processing yes signal processing Of A subset of .

The purpose of digital signal processing is the continuity of the real world analog signal Measure or filter . Therefore, before digital signal processing, it is necessary to convert the signal from analog domain to digital domain , This is usually done through A / D converter Realization . The output of digital signal processing is often transformed to analog domain , This is through A / D converter Realized .

Digital signal processing Algorithm Need to use Computer or special processing equipment Such as Digital signal processor （DSP） and ASIC （ASIC） etc. . Digital signal processing technology And the equipment is flexible 、 accurate 、 anti-interference strong 、 The size of the equipment is small 、 Low cost 、 Speed and other outstanding advantages , These are incomparable to analog signal processing technology and equipment .

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