高可靠、低能耗的物联网基带收发机设计

Design of a Reliable and Low-Energy Baseband Transceiver for Internet of Things

随着物联网的飞速发展,根据具有开放传输介质、高度资源受限和无人值守等特征的物联网感知层节点的设计需要,提出了高可靠、低能耗的基带收发机解决方案.提出了一种新型的频率偏移补偿和相位偏移补偿的方法,通过对解调器的性能和系统成本的折中优化,不仅降低了系统实现的复杂度,而且在恶劣环境下具有很好的系统性能.其中误帧率1%时对应的信噪比Eb/N0为6.6dB,优于其他已发表文献.精简的设计实现和细分为五种工作模式的能耗管理策略,通过降低整体功耗和压缩射频模块工作的占空比方法,实现了在中芯国际65nmCMOS工艺下,此款基带收发机的总功耗低至371μW.

As the rising development of Internet of Things,under the fact of open medium,highly constraint resources and unattended operations,the nodes of sensing and communication layers evoke the demand of reliability and low-energy transceivers.A well-designed frequency offset compensation and phase offset compensation method is proposed for tradeoff between the demodulator performance and the system cost to meet the requirement of low complexity and high reliability.To our best knowledge,the performance of 1% PER（packet error rate）at Eb/N0of6.6dB is better than the prior works.Moreover,a five-mode energy saving strategy reduces the radio duty cycle and the overall power.The total power of this baseband transceiver is 371μW by simple implementation and deliberate mode management under SMIC 65 nm CMOS process.