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Based on the electrical model of body area communication,the change tendency of channel gain in 100kHz-10MHz band was experimentally analyzed and verified.Results show that channel gain was flat and signal attenuation was approximately 43dB in 1MHz-10MHz band.The characteristics of the channel were taken into account in the design of body area spread spectrum communication and its multiuser receiver issue.BER-Eb/No curves of single user and multiuser were derived by simulation.The characteristics of body area commutation channel were studied and the feasibility of introducing spread spectrum theory to body area communication was verified. 相似文献
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首先分析了空中目标静电电荷的产生机理,分析指出了利用目标自身产生的静电场来探测目标是可能的。在对国外被动式静电引信研究现状分析的基础上,分析了检测电流式静电引信的原理、探测性能和目标识别能力。最后分析了被动式静电引信的优点。 相似文献
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