Zobrazeno 1 - 10
of 62
pro vyhledávání: '"Wenmiao Song"'
Autor:
Wenmiao Song, Hanbai Fan
Publikováno v:
Proceedings of the 2016 International Conference on Education, E-learning and Management Technology.
With the development of the modern electronics technology, the limitation of traditional method which only used VHDL language is more and more clear. To keep up with the newest development, we introduced method of model based design into the curricul
Publikováno v:
Journal of Electronics (China). 16:66-72
The ionospheric time delay is one of the main error sources in C/A code GPS navigation and positioning applications. In this paper, a method is proposed for real-time dual-frequency ionospheric time-delay correcting using a C/A code GPS receiver, and
Autor:
Xiao Zhang, Wenmiao Song
Publikováno v:
2011 4th IEEE International Symposium on Microwave, Antenna, Propagation and EMC Technologies for Wireless Communications.
RRC (root rises cosine) filter is widely applicable to shape the signal pulse in DDC (Digital Down Conversion). This paper research the theory of root rises cosine filter. Based on the more extensive use methods of local search algorithm and design f
Autor:
Bo Liu, Wenmiao Song
Publikováno v:
2010 3rd International Conference on Computer Science and Information Technology.
This CIC (Cascaded integrator comb) decimation filter is widely applicable to reduce the data sampling rate in DDC (Digital Down Conversion). In this paper, the theory of CIC decimation filter architecture is researched. Based on the idea of software
Autor:
Qiongqiong Yao, Wenmiao Song
Publikováno v:
2010 3rd International Conference on Computer Science and Information Technology.
This paper presents a method to designs QPSK modulator and demodulator of a spread spectrum system, which use field programmable device. The method uses the tool of Quartus II of American Altera Co. The whole system is divided into several small mode
Autor:
Wenmiao Song
Publikováno v:
2009 3rd IEEE International Symposium on Microwave, Antenna, Propagation and EMC Technologies for Wireless Communications.
Cognitive Radio (CR) is considered as a potential solution to improve spectrum utilization via opportunistic spectrum implement. Using Software defined Radio (SDR) technology, a flexible radio platform can be potentially configured a Cognitive Engine
Publikováno v:
2009 International Conference on Networks Security, Wireless Communications and Trusted Computing.
High dynamic condition will cause Doppler shift acutely, then digital carrier loop may fail to track signal and wrong demodulation may occur in Spread Spectrum receiver. This paper researches on the digital carrier tracking technique and introduces a
Publikováno v:
2008 4th International Conference on Wireless Communications, Networking and Mobile Computing.
In this paper, we propose a simple hardware implementation scheme of the D-STBC system. According to the theory of D-STBC, the specific implementation scheme of encoding and decoding come up. In the design, one differential encoding table is set up t
Publikováno v:
2008 4th International Conference on Wireless Communications, Networking and Mobile Computing.
In this paper, the influence of electric power system to wireless communication system is mainly introduced. The electric power system includes ultrahigh-tension power transmission lines and transformer substation. The creation source of the electrom
Publikováno v:
2008 4th International Conference on Wireless Communications, Networking and Mobile Computing.
Spread spectrum technology can effectively solve the problems such as bad channel environment, multi-path fading etc between mobile station and subscribers. At present the research on the synchronization of PN code is more concentrated on how to impl