A 7.5-GHz Frequency-Hopping CDMA UWB Transceiver for Secure Multi-Sensor Connectivity

IF 4 2区 工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC
Luhua Lin;Bowen Wang;Woogeun Rhee;Zhihua Wang
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引用次数: 0

Abstract

This brief describes an ultra-wideband (UWB) transceiver architecture that employs a frequency-hopping code-division multiple-access (FH-CDMA) scheme for secure multi-sensor connectivity with up to 18-channel capacity. By using distinct frequency-hopping (FH) patterns based on m-sequence, quantitative analysis and simulation results show that the FH-CDMA UWB system can support up to 18 users simultaneously sharing the same transmission band. The duty cycle control of a carrier signal for each FH cycle enables the transmitter to perform baseband clock synchronization with nano-second resolution. A prototype 7.5-GHz UWB transceiver is implemented in 65-nm CMOS. With the FH enabled, the transmitter meets the UWB spectrum mask. The receiver achieves a sensitivity of –91 dBm at 25 kb/s and exhibits <1-dB degradation when three users transmit signals simultaneously.
一种7.5 ghz跳频CDMA超宽带收发器的安全多传感器连接
本文介绍了一种超宽带(UWB)收发器架构,该架构采用跳频码分多址(FH-CDMA)方案,可实现多达18通道容量的安全多传感器连接。定量分析和仿真结果表明,采用基于m序列的不同跳频模式,跳频- cdma超宽带系统最多可支持18个用户同时共享同一传输频带。载波信号的每个跳频周期的占空比控制使发射机能够以纳秒分辨率执行基带时钟同步。在65纳米CMOS中实现了7.5 ghz超宽带收发器的原型。使能跳频后,发射机满足UWB频谱掩码。该接收机在25 kb/s时达到-91 dBm的灵敏度,当三个用户同时发射信号时,其灵敏度下降<1 db。
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来源期刊
IEEE Transactions on Circuits and Systems II: Express Briefs
IEEE Transactions on Circuits and Systems II: Express Briefs 工程技术-工程:电子与电气
CiteScore
7.90
自引率
20.50%
发文量
883
审稿时长
3.0 months
期刊介绍: TCAS II publishes brief papers in the field specified by the theory, analysis, design, and practical implementations of circuits, and the application of circuit techniques to systems and to signal processing. Included is the whole spectrum from basic scientific theory to industrial applications. The field of interest covered includes: Circuits: Analog, Digital and Mixed Signal Circuits and Systems Nonlinear Circuits and Systems, Integrated Sensors, MEMS and Systems on Chip, Nanoscale Circuits and Systems, Optoelectronic Circuits and Systems, Power Electronics and Systems Software for Analog-and-Logic Circuits and Systems Control aspects of Circuits and Systems.
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