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
(Read More…)
The public wireless communication and private wireless communication are two major application areas of wireless communication. The public wireless communication has been digitized in China, but private wireless communication is still at the simulation stage. With the continuous development of wireless communication technologies, European Telecommunication Standards Institute introduced the special wireless communication standard:DMR (Digital Mobile
(Read More…)
With the development and maturity of WCDMA technology, the users of WCDMA terminals have increased rapidly in quantity. As an integral part of the WCDMA industry chain, WCDMA terminal one-box tester has been applied in the design, production, maintenance and certification tests for Network Accessing License of chips and UEs. The demand for improvement of
(Read More…)
Recently, researchers have paid close attention to cognitive radio. However, it is so far from industrialization. To quicken the step of cognitive radio’s industrialization, we are really in need of a demonstration platform to verify those key technologies. What we have discussed in this paper is how to build such a platform.Considering the requirement of
(Read More…)
Recently, researchers have paid close attention to cognitive radio. However, it is so far from industrialization. To quicken the step of cognitive radio’s industrialization, we are really in need of a demonstration platform to verify those key technologies. What we have discussed in this paper is how to build such a platform.Considering the requirement of
(Read More…)
Because of the coexistence of multi-system for radio communications, there are some problem.For example, different systems of communications equipment are not mutually compatible, and it isdifficult to formulate a uniform standard. Software radio and its platform have been proposed forthe first time in 1992. The basic idea is to construct a standardized, modular, open hardwareplatform.
(Read More…)
With the development of telecommunications, the high real-time business with large data volume has played an important part in mobile communications nowadays. Modern wireless communications is developing to the direction of broadband, high-speeding, intelligent and comprehensive. As users’increasing demands for services provided by today’s communication systems, orthogonal frequency division multiplexing (OFDM) technology is concerned by
(Read More…)
As the dependent of electronic computer equipment on daily growth, electromagnetic leakage of electronic equipment and the related TEMPEST technology have already become one of the most pressing issues to be solved in the field of information security. The key technology has become a hot spot in the study of all countries.One of the key
(Read More…)
Digital signal has a wide range of applications in the fields of communications, radar, etc, due to the merits of anti-interference ability and easy of encryption. Digital signal modulation recognition is an intermediate step between signal interception and demodulation, it has been an important issue in electronic warfare, spectrum management, and software-defined radio in the
(Read More…)
With the continuous development of social scientific, technological level and economic, the signal is more and more crowded because of a significant increase of the short-wave radio communications equipment. The electromagnetic environment of short-wave radio communications is increasingly complex. Due to the short distance, when multiple radio work simultaneously, they will interfere with each other,
(Read More…)
