Jian-wu Zhang

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Abstract-With the development of wireless communication technology, offering wideband access for the rural and remote area has become an urgent demand of the market. IEEE 802.22 wireless regional access network is required to use the TV frequency band with no harmful interference to TV user or wireless microphone. Cognitive radio is its main technology to(More)
Cognitive radio can use the hole of licensed spectrum efficiently without interference to the primary users through sensing the wireless environment dynamically. An improved algorithm of spectrum allocation based on graph-coloring theory is proposed in this paper. It can significantly reduce the cost of allocating channels through parallel allocation thus(More)
This paper discussed the management regulations and technical requirements of clinical investigational product for new drug of traditional Chinese medicine, analyzed some common problems on the management of them, and proposed the establishment of closed-loop management model and management requirements in various aspects.
  • Jian-Wu Zhang
  • Zhongguo Zhong yao za zhi = Zhongguo zhongyao…
  • 2013
This paper studied the status of registration administration of extracts of traditional Chinese medicine (TCM) and its preparation, discussed some factors which affect the quality of extracts of TCM and its preparation, and puted forward some suggestions to strengthen the registration administration of extracts of TCM and its preparation such as clear(More)
The EU is an international bridge of traditional Chinese medicine (TCM), and TCM in EU is of strategic importance. In this paper the progress on policies and regulations and approved products of herbal medical products in EU in 10 years were briefly reviewed, registration regulations were systematically, studied and some typical cases were analyzed. To(More)
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