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北京交通大学电子信息工程学院,北京100044
[ "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" ]
网络出版日期:2020-11,
纸质出版日期:2020-11-25
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许琳森, 杨维, 田洪现, 等. 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, et al. Bit-filling algorithm for fast subcarrier-selecting in ultrasonic through-metal communication[J]. Journal on communications, 2020, 41(11): 30-39.
许琳森, 杨维, 田洪现, 等. 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. DOI: 10.11959/j.issn.1000-436x.2020228.
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.
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
<math xmlns="http://www.w3.org/1998/Math/MathML"> <mfrac> <mn>3</mn> <mn>4</mn> </mfrac> </math>
的子载波BER计算,大大降低了计算量。
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
<math xmlns="http://www.w3.org/1998/Math/MathML"> <mfrac> <mn>3</mn> <mn>4</mn> </mfrac> </math>
subcarriers
greatly reducing the amount of calculation.
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