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In China, China Mobile has totally 400 thousands GSM base stations and the network coverage is the best in the world. This research analyzes the problems of GSM network coverage in high-speed railway and puts forward effective solutions of each problem. Moreover, it introduces the hardware and software used in DT Testing. Meanwhile through the test in intercity railway from Nanjing to Shanghai, it...
SMS with low cost can be used in long distance wireless transmission as well as other occasions, but it is inconvenient to send and receive SMS. The paper discusses how to overcome this problem using PC's serial port and designs a simple but efficient transceiver platform based on VC++ environment. The key technology and realization of the process are given in the paper.
Characteristics of GPRS and ad hoc networks are briefly introduced and a novel design of a wireless ad hoc network remote meter reading system based on GPRS is proposed. With the implementation of the system and relevant techniques being thoroughly investigated, system performance analysis and pros and cons of this system are presented at the end.
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