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

Linsen XU; Wei YANG; Hongxian TIAN; Tao WU

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

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

Papers | 更新时间：2024-06-05

- Bit-filling algorithm for fast subcarrier-selecting in ultrasonic through-metal communication
- Journal on Communications Vol. 41, Issue 11, Pages: 30-39(2020)
- 作者机构：
  
  北京交通大学电子信息工程学院，北京100044
- 作者简介：
- 基金信息：
  
  The National Natural Science Foundation of China(51874299;61671050);The National Science and Technology Infrastructure Program of China(2013BAK06B03);The Fundamental Research Funds for the Central Universities(2018YJS004)
- DOI：10.11959/j.issn.1000-436x.2020228
  CLC： TN92
- Online First：2020-11，
  
  Published：25 November 2020
- 稿件说明：
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Linsen XU, Wei YANG, Hongxian TIAN, et al. Bit-filling algorithm for fast subcarrier-selecting in ultrasonic through-metal communication[J]. Journal on Communications, 2020, 41(11): 30-39.
DOI：

Linsen XU, Wei YANG, Hongxian TIAN, et al. Bit-filling algorithm for fast subcarrier-selecting in ultrasonic through-metal communication[J]. Journal on Communications, 2020, 41(11): 30-39. DOI： 10.11959/j.issn.1000-436x.2020228.

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

的子载波BER计算，大大降低了计算量。

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

subcarriers

greatly reducing the amount of calculation.

关键词

Keywords

references

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