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铁路通信中低速率数据传输设计浅析
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作者 姜连青 《铁路通信信号设计》 2001年第1期20-20,共1页
目前,铁路通信网存在大量的低速率数据需要传输,如何以低成本实现低速率设备接入光纤接入网,笔者结合某工程设计,作了一些探讨。
关键词 铁路 通信网 低速率数据传输 设计 入网 数据专线
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Low Power Single-Chip RF Transceiver for Human Body Cormunication 被引量:2
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作者 Nie Zedong Guan Feng +1 位作者 Huang Jin Wang Lei 《China Communications》 SCIE CSCD 2012年第9期1-10,共10页
Human body communication is proposed as a promising body proximal comanunication tech- nology for body sensor networks. To achieve low power and slmll volume ill the sensor nodes, a Ra-dio Frequency (RF) application... Human body communication is proposed as a promising body proximal comanunication tech- nology for body sensor networks. To achieve low power and slmll volume ill the sensor nodes, a Ra-dio Frequency (RF) application-specific integrated circuit transceiver tbr Human Body Commnunication (HBC) is presented and the characteristics of HBC are investigated. A high data rate On-Off Keying (OOK)/Frequency-Shift Keying (FSK) modulation protocol and an OOK/FSK delrodulator circuit are introduced in this paper, with a data-rate-to-carrier-frequency ratio up to 70%. A low noise amplifier is proposed to handle the dynamic range problem and improve the sensitivity of the receiver path. In addi-tion, a low power autonmatic-gain-control system is realized using a novel architecture, thereby render-ing the peak detector circuit and loop filter unneces-sary. Finally, the complete chip is fabricated. Simula-tion results suggest receiver sensitivity to be-75 dBm. The transceiver shows an overall power con-smxption of 32 mW when data rate is 5 Mbps, de-livering a P1dB output power of - 30 dBm. 展开更多
关键词 application-specific integrated circuit TRANSCEIVER human body communication
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