The development of the transistor promotes the digital revolution of radio technology. Over the past few decades, Steady progress of radio technology makes the radio device becomes smaller and more powerful. Digital devices gradually replace each analog device of the radio device. Digital technology continue to move forward until RF front end, and achieve full
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Wireless industrial communication is another popular technology in industrial control systems after fieldbus and industrial Ethernet. It has been rapidly developed in recent decades. But there are many multiple bands and communication standards in wireless sensor networks. In order to reduce the interference between the signals in the communication, we introduced software defined radio in
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Software Defined Radio (SDR) is a very new technology in wireless communication field. With the adoption of Digital Signal Processing, the function of each module is defined by software on the general hardware platform of programmable control, which endows the technology with openness, generality and scalability. Software Communications Architecture (SCA) provides a set of standard
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As one of the most popular digital trunked standards in the world nowadays, TETRA digital trunked communication system has become one of the general standards in our country. TETRA system is an open system which is designed and set unified standard by ETSI to meet the requirement of mobile system in European specialized departments. Because
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As one of the most popular digital trunked standards in the world nowadays, TETRA digital trunked communication system has become one of the general standards in our country. TETRA system is an open system which is designed and set unified standard by ETSI to meet the requirement of mobile system in European specialized departments. Because
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As the spectrum resources are constrained today, Multi-input Multi-output (MIMO) technology attracts much attention by virtue of multiply increasing system capacity without increasing the system bandwidth. Along with the increasing demand for MIMO technology, research on MIMO technology becomes an important research hotspot. However, most of ex-isting researches are performed or verified by computer simulation,
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SDR (Software Defined Radio) means integrating the modular, systematic hardware modules in a common platform, and this platform through a modular software program loaded on to achieve a variety of different wireless communication functions. It bases on a general used hardware platform and uses software programming to implement different function of wireless broadcasting station, which
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With the rapid development of science and technologies today, thecommunication technology is now widely used in military and civil fields.Carrier synchronization technology takes a very important part incommunication systems. When in different environments or situations,different modulation types should often be selected, which need differentcarrier synchronization methods. Thus the communication equipments shouldbe replaced, which costs much
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Nowadays, as analog broadcasting switching to digital broadcasting, the analog radio isgradually phased out. But the traditional AM broadcasting with low cost and strongsurvivability is non-alternative in the case of sudden-onset natural disasters.Software-Defined Radio technology can solve issues of receiver compatibility in the stageof the coexistence of analog and digital broadcast very well. The bandwidth
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The rapid development of wireless communication has made a great difference, which can be shown by our feelings about the considerate service and convenient communications. Thus, it forces the requirements for the compatibilities among systems of different standards; moreover, platforms for communication should be highly flexible and extendable. Consequently, Software Defined Radio (SDR) inevitably becomes
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