超声波透金属通信中子载波快速筛选比特填充算法

doi:10.11959/j.issn.1000-436x.2020228

通信学报 ›› 2020, Vol. 41 ›› Issue (11): 30-39.doi: 10.11959/j.issn.1000-436x.2020228

超声波透金属通信中子载波快速筛选比特填充算法

许琳森,杨维,田洪现,吴韬

北京交通大学电子信息工程学院，北京100044

修回日期:2020-08-29 出版日期:2020-11-25 发布日期:2020-12-19
作者简介:许琳森（1993- ），男，湖北荆门人，北京交通大学博士生，主要研究方向为无线通信、超声透金属通信等|杨维（1964- ），男，北京人，博士，北京交通大学教授、博士生导师，主要研究方向为无线通信、无线安全监测技术等|田洪现（1973- ），男，山西晋城人，博士，北京交通大学副教授，主要研究方向为无线局域网通信、宽带移动通信等|吴韬（1991- ），男，湖北潜江人，北京交通大学博士生，主要研究方向为煤矿物联网、无线传感网等
基金资助:
国家自然科学基金资助项目(51874299);国家科技支撑计划基金资助项目(2013BAK06B03);中央高校基本科研业务费专项资金资助项目(2018YJS004)

Bit-filling algorithm for fast subcarrier-selecting in ultrasonic through-metal communication

Linsen XU,Wei YANG,Hongxian TIAN,Tao WU

School of Electronic and Information Engineering,Beijing Jiaotong University,Beijing 100044,China

Revised:2020-08-29 Online:2020-11-25 Published:2020-12-19
Supported by:
The National Natural Science Foundation of China(51874299);The National Science and Technology Infrastructure Program of China(2013BAK06B03);The Fundamental Research Funds for the Central Universities(2018YJS004)

摘要/Abstract

摘要：

针对贪婪比特填充算法复杂度较高的问题，提出了一种用于超声波透金属通信的子载波快速筛选比特填充算法。通过BER近似公式和泰勒公式推导出子载波BER增量的近似表达式，将其作为贪婪比特填充算法中筛选子载波的依据，先筛选子载波再计算其 BER，使贪婪算法不需要计算所有子载波的新 BER。仿真结果表明，所提算法可达到贪婪比特填充算法的数据速率，节省了约 $\frac{3}{4}$ 的子载波BER计算，大大降低了计算量。

关键词: 超声波, 透金属通信, 比特填充算法, 正交频分复用

Abstract:

Aiming at the high complexity of the greedy bit-filling algorithm,a bit-filling algorithm for fast subcarrier-selecting used in ultrasonic through-metal communication was proposed.The approximate expression for the BER increment,which was used as the basis for selecting subcarriers in the greedy bit-filling algorithm,was derived by the BER approximation formula and Taylor formula.The subcarrier was selected first and then its BER was calculated.Therefore,it was unnecessary for the greedy bit-filling algorithm to calculate new BER of all subcarriers.The simulation results show that the proposed algorithm can achieve nearly the same data rate as the greedy bit-filling algorithm and save the BER calculation of about $\frac{3}{4}$ subcarriers,greatly reducing the amount of calculation.

Key words: ultrasound, through-metal communication, bit-filling algorithm, OFDM

中图分类号:

TN92

许琳森,杨维,田洪现,吴韬. 超声波透金属通信中子载波快速筛选比特填充算法[J]. 通信学报, 2020, 41(11): 30-39.

Linsen XU,Wei YANG,Hongxian TIAN,Tao WU. Bit-filling algorithm for fast subcarrier-selecting in ultrasonic through-metal communication[J]. Journal on Communications, 2020, 41(11): 30-39.

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超声波透金属通信中子载波快速筛选比特填充算法

Bit-filling algorithm for fast subcarrier-selecting in ultrasonic through-metal communication

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