Cascading polar coding and LT coding for radar and sonar networks

Cascading polar coding and LT coding for radar and sonar networks
复制标题

用于雷达和声纳网络的级联极坐标编码和 LT 编码

DOI:
10.1186/s13638-016-0748-4
复制
发表时间:
2016-10
影响因子:
2.6
通讯作者:
Yiuming Li
Yiuming Li
中科院分区:
计算机科学4区
文献类型:
--
作者:
Liping Jin;Yiuming Li

文献摘要

参考文献

相似文献

在雷达和声纳网络中,强烈的杂波和噪声对信息的传输和处理造成了严重的损害。编码技术已被广泛用于应对各种信道噪声,从而改善传输性能。在这项研究中,我们研究了一种新的级联编码方案,适用于工作在恶劣电磁环境中的系统,例如水声通信,在这种环境下,脉冲噪声将不可避免地出现,接收机的误码率(BER)将大大恶化。我们的级联编码方案使用极性码作为内码,使用Luby变换(LT)码作为外码。极化码基于一种新的信道极化概念,利用一组理想子信道来携带有用信息,而让其他不好的子信道不携带任何信息。由于极性码的译码依赖于对初始输入相对敏感的逐次抵消技术,因此通过级联对内码输入进行奇偶校验的外LT码,提高了内极性码的性能。研究了这种新型级联码在满足Middleton A类模型的脉冲噪声环境下的纠错性能。仿真结果验证了所提出的级联编码方案。与目前流行的低密度奇偶校验(LDPC)码相比,级联方案能够显著提高脉冲干扰下的误码率性能,也超过了另一种在脉冲噪声信道中被证明是有效的级联码,即级联LDPC和LT编码方案。
In radar and sonar networks, heavy clutter and noise have generated strong impairments to information transmission and processing. Coding techniques have been widely used to cope with various channel noises and thereby to improve transmission performance. In the study, we investigate a novel cascaded coding scheme for systems operating in adverse electromagnetic environments, e.g., underwater acoustic communications (UAC), where the impulsive noise will be inevitable and the bit error ratio (BER) of receiver will be deteriorated greatly. Our cascaded encoding scheme employs the polar code as inner code while the Luby transform (LT) code as outer code. Inspired on a novel conception of channel polarization, the polar code uses a group of idea sub-channels to carry the useful information, while let other bad sub-channels bear no information. By cascading the outer LT code which accomplishes some parity check to the input of inner code, the performance of inner polar code is improved, as the decoding of polar code relies on a successive cancelation technique which is relatively sensitive to initial input. Error correcting performance of the new cascaded code is studied under impulsive noise characterized by a Middleton Class-A model. Simulations validate the proposed cascaded coding scheme. Compared with the popular low-density parity check (LDPC) code, the cascaded scheme can significantly improve the BER performance in the presence of impulsive interference, which also surpasses another cascaded code that is proved to be effective in impulsive noise channel, i.e., cascaded LDPC and LT coding scheme.
DOI: 10.1109/tpwrd.2008.919397
发表时间: 2008-06
影响因子: 4.4
作者:
M. Tlich;A. Zeddam;F. Moulin;F. Gauthier
通讯作者: M. Tlich;A. Zeddam;F. Moulin;F. Gauthier
DOI: 10.1002/9780470740156
发表时间: 2006-01
期刊: --
影响因子: --
作者:
S. Vaseghi
通讯作者: S. Vaseghi
DOI: --
发表时间: 2004
期刊: IEEE Potentials
影响因子: --
作者:
A. Majumder;Jr. Caffery J
通讯作者: A. Majumder;Jr. Caffery J
DOI: --
发表时间: 2010
期刊: Journal of Engineering Graphics
影响因子: --
作者:
H. Yuanjun
通讯作者: H. Yuanjun
DOI: 10.1109/milcom.2008.4753547
发表时间: 2008-11
期刊: MILCOM 2008 - 2008 IEEE Military Communications Conference
影响因子: --
作者:
S. Ahmed;H. Arslan
通讯作者: S. Ahmed;H. Arslan