电子学报 ›› 2018, Vol. 46 ›› Issue (9): 2115-2122.DOI: 10.3969/j.issn.0372-2112.2018.09.011

• 学术论文 • 上一篇    下一篇

基于采样精度切换的毫米波无线通信空闲侦听机制研究

孙海洋1, 陈珍1, 杨冠男1, 高波2,3   

  1. 1. 南京大学金陵学院, 江苏南京 210000;
    2. 清华大学电子工程系, 北京 100084;
    3. 中兴通讯股份有限公司, 江苏南京 210000
  • 收稿日期:2016-09-12 修回日期:2018-05-15 出版日期:2018-09-25
    • 通讯作者:
    • 陈珍
    • 作者简介:
    • 孙海洋 男,1982年出生于山东济宁,现为南京大学金陵学院信息科学与工程学院讲师,主要研究方向为信道编码、人工智能算法.E-mail:sunhy_jlxy@163.com;杨冠男 女,1982年出生于黑龙江双鸭山,现为南京大学金陵学院信息科学与工程学院讲师,主要研究方向为空间信息网络、卫星通讯;高波 男,1988年出生于山东枣庄,清华大学电子工程系博士,现为中兴通讯股份有限公司高级工程师,研究方向为5G移动通信、高频段信道建模.
    • 基金资助:
    • 南京大学金陵学院重点课题 (No.0010521806)

Sampling-Precision-Switching-Based Idle Listening Scheme for Millimeter-Wave Wireless Communications

SUN Hai-yang1, CHEN Zhen1, YANG Guan-nan1, GAO Bo2,3   

  1. 1. Jinling College, Nanjing University, Nanjing, Jiangsu 210000, China;
    2. Department of Electronic Engineering, Tsinghua University, Beijing 100084, China;
    3. Zhongxing Communications Co., Ltd, Nanjing, Jiangsu 210000, China
  • Received:2016-09-12 Revised:2018-05-15 Online:2018-09-25 Published:2018-09-25

摘要: 针对毫米波无线通信系统,提出了一种基于采样精度切换的低功耗空闲侦听方案,使得CSMA/CA下空闲侦听功耗与接收机解调所需高耗能模数转换器(ADC)功耗互相独立.具体而言,在空闲侦听状态,接收机使能极低功耗的1比特ADC和所提的1比特采样精度广义似然比包检测器来捕获突发包的到达;一旦捕获成功,接收机切换到原高精度ADC来解调数据包,进而保持了解调性能.该文推导并验证了所提方案中包到达检测器的虚警概率(FAP)和漏检概率(MDP)表达式.仿真结果表明,该方案与现有方案相比可显著降低空闲侦听功耗,并获得优异的检测性能.

关键词: 毫米波无线通信, 空闲侦听, 数据包到达检测, 广义似然比, 低功耗

Abstract: In this paper,a novel energy-efficiency sampling-precision-switching-based idle listening scheme is proposed for millimeter-wave wireless communications to achieve the target that the power consumption of idle listening is irrelevant to that of the energy-consuming analog-to-digital converter (ADC) required by the demodulation of receiver.To be more specific,in the idle listening phase,the receiver enables ultra-low power 1-bit ADC as well as the proposed 1-bit-sampling-precision generalized likelihood ratio test (GLRT) detector to capture the arrival of data packet;once capturing it successfully,the receiver switches to an original high-precision ADC and demodulate this packet,which maintains the demodulation performance.Meanwhile,the false-alarm probability (FAP) and miss-detection probability (MDP) expressions of the packet detector of the proposed scheme are derived and subsequently validated.Simulation results show that the proposed scheme can significantly reduce the power consumption of idle listening and obtains the effective packet-detection performance,compared with the existing schemes.

Key words: millimeter-wave wireless communications, idle listening, packet-arrival detection, generalized likelihood ratio test (GLRT), energy-efficiency

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