Digital Down Conversion(DDC) and Digital Pulse Compression are used widely in pulse radar receiver. Digital Down Conversion eliminates the signal carrier frequency after sampling in order to process signal in the baseband. As the one of the most important techniques in radar algorithm, Digital Pulse Compression resolve the conflict between radar range resolution and transmitting
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As the develop orientation of the. communication and the radio technology in the future, Software Radio is based on modern communication theory, takes the Digital Signal Processing technology as the core. On the basic platform connected by hardware units, Software Radio realize all sorts of radio communication by loading softwares. Digital Down Conversion is an
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According to the letter not letter [2002]127,[2002]10and［2009］666which is issued by Radio Administration of the Ministry of InformationIndustry and the dPMR protocol which is launched by the EuropeanTelecommunications Standards Alliance (ETSI) for civilian digital radio,this paper designed the IF digital receiver of900M system based ondPMR protocol. The dPMR protocol is on the infancy stage in China,therefore,
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Under the 3G mobile communications network constructions, the developing direction of base stations is how to achieve coverage of the City-intensive wireless network. Currently, the core of network coverage is to set the traditional macro base station apart into two equipments which are Baseband Unit and Radio Remote Unit. The digital transceiver discussed in this
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Under the 3G mobile communications network constructions, the developing direction of base stations is how to achieve coverage of the City-intensive wireless network. Currently, the core of network coverage is to set the traditional macro base station apart into two equipments which are Baseband Unit and Radio Remote Unit. The digital transceiver discussed in this
(Read More…)
Along with fast development of information technical, the communicate ability of small quantity has already can’t satisfied the business requirement of people .The narrow band digital communication system is developing gradually to the wideband third generation mobile communication system. TD-SCDMA is one of air interface technical criterion of the third generation mobile communication system released
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Along with the advancement of electronic and computer’s technology, especially the increase of the digital signal processor’s speed, the digital signal processing technology is more and more important in receiver. Digital receiving technology is widely used in the field of radar, weather, Software Radio and so on. This receiver has strong universal, and all or
(Read More…)
Under the 3G mobile communications network constructions, the developing direction of base stations is how to achieve coverage of the City-intensive wireless network. Currently, the core of network coverage is to set the traditional macro base station apart into two equipments which are Baseband Unit and Radio Remote Unit. The digital transceiver discussed in this
(Read More…)
Along with fast development of information technical, the communicate ability of small quantity has already can’t satisfied the business requirement of people .The narrow band digital communication system is developing gradually to the wideband third generation mobile communication system. TD-SCDMA is one of air interface technical criterion of the third generation mobile communication system released
(Read More…)
Along with the advancement of electronic and computer’s technology, especially the increase of the digital signal processor’s speed, the digital signal processing technology is more and more important in receiver. Digital receiving technology is widely used in the field of radar, weather, Software Radio and so on. This receiver has strong universal, and all or
(Read More…)
