德国西门子公司日前表示，他们在位于慕尼黑的实验室里，成功将无线网络的传输速率提高到了1Gbps，这比802．11g标准的传输速率提高了将近20倍。西门子公司表示、这个成果归功于联合使用了正交频分复用(OFDM：Orthogonal Frequency Divi...德国西门子公司日前表示，他们在位于慕尼黑的实验室里，成功将无线网络的传输速率提高到了1Gbps，这比802．11g标准的传输速率提高了将近20倍。西门子公司表示、这个成果归功于联合使用了正交频分复用(OFDM：Orthogonal Frequency Division Multiplexing)技术和“多人多出”(MIMO：multi-in，multi-out)天线技术。展开更多
A wireless sensor network is proposed to monitor the acceleration of structures for the purpose of structural health monitoring of civil engineering structures. Using commercially available parts, several modules are ...A wireless sensor network is proposed to monitor the acceleration of structures for the purpose of structural health monitoring of civil engineering structures. Using commercially available parts, several modules are constructed and integrated into complete wireless sensors and base stations. The communication protocol is designed and the fusion arithmetic of the temperature and acceleration is embedded in the wireless sensor node so that the measured acceleration values are more accurate. Measures are adopted to finish energy optimization, which is an important issue for a wireless sensor network. The test is perfonned on an offshore platform model, and the experimental results are given to show the feasibility of the designed wireless sensor network .展开更多
文摘德国西门子公司日前表示，他们在位于慕尼黑的实验室里，成功将无线网络的传输速率提高到了1Gbps，这比802．11g标准的传输速率提高了将近20倍。西门子公司表示、这个成果归功于联合使用了正交频分复用(OFDM：Orthogonal Frequency Division Multiplexing)技术和“多人多出”(MIMO：multi-in，multi-out)天线技术。
基金Supported by the High Technology Research and Development Programme of China （ No. 2003AA602230） and the National Natural Science Foundation of China（No. 50308007）.
文摘A wireless sensor network is proposed to monitor the acceleration of structures for the purpose of structural health monitoring of civil engineering structures. Using commercially available parts, several modules are constructed and integrated into complete wireless sensors and base stations. The communication protocol is designed and the fusion arithmetic of the temperature and acceleration is embedded in the wireless sensor node so that the measured acceleration values are more accurate. Measures are adopted to finish energy optimization, which is an important issue for a wireless sensor network. The test is perfonned on an offshore platform model, and the experimental results are given to show the feasibility of the designed wireless sensor network .
