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Simplified SCL decoding algorithm of polar codes based on critical sets

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Optoelectronics Letters 2023年第6期19卷 364-369页

作者： YUAN Jianguo ZHANG Fengguo he jingjie HUANG Sheng Chongqing Key Laboratory of Photoelectronic Information Sensing and Transmitting Technology Chongqing University of Posts and TelecommunicationsChongqing 400065China

In order to reduce the high complexity of the successive cancellation list(SCL) algorithm for polar codes,a simplified SCL decoding algorithm based on critical sets(CS-SCL decoding algorithm) is *** algorithm firstly constructs the critical sets according to the channel characteristics of the polar codes as well as comprehensively considering both the minimum Hamming weight(MHW) of the information bits and the channel *** information bits within the critical sets and the path splitting are still performed by the SCL decoding algorithm while the information bits outside the critical sets are directly performed by the hard ***,the number of path ordering,copying,and deleting can be reduced during ***,the computational complexity of the SCL decoding can also be *** results demonstrate that the decoding complexity of the proposed CS-SCL decoding algorithm,compared with the conventional SCL decoding algorithm,is reduced by at least 70%,while compared with the simplified SCL(PS-SS-SCL) algorithm which constructs the critical set with the first and second information bits of the Rate-1 nodes,its decoding complexity can also be ***,the loss of the error correction performance for the proposed CS-SCL decoding algorithm is ***,the proposed CS-SCL algorithm is effective and can provide a reasonable tradeoff between the decoding performance and complexity for the decoding algorithm of polar codes.

关键词： critical algorithm complexity

CS-FSCL decoding algorithm of polar codes based on critical sets

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Optoelectronics Letters 2024年第7期20卷 418-423页

作者： YUAN Jianguo ZHANG Fengguo he jingjie PANG Yu School of Optoelectronic Engineering Chongqing University of Posts and TelecommunicationsChongqing 400065China1

In order to reduce the number of redundant candidate codewords generated by the fast successive cancellation list(FSCL)decoding algorithm for polar codes,a simplified FSCL decoding algorithm based on critical sets(CS-FSCL)of polar codes is *** algorithm utilizes the number of information bits belonging to the CS in the special nodes,such as Rate-1 node,repetition(REP)node and single-parity-check(SPC)node,to constrain the number of the path splitting and avoid the generation of unnecessary candidate codewords,and thus the latency and computational complexity are ***,the algorithm only flips the bits corresponding to the smaller log-likelihood ratio(LLR)values to generate the sub-maximum likelihood(sub-ML)decoding codewords and ensure the decoding *** results show that for polar codes with the code length of 1024,the code rates of 1/4,1/2 and 3/4,the proposed CS-FSCL algorithm,compared with the conventional FSCL decoding algorithm,can achieve the same decoding performance,but reduce the latency and computational complexity at different list ***,under the list size of L=8,the code rates of R=1/2 and R=1/4,the latency is reduced by 33%and 13%and the computational complexity is reduced by 55%and 50%,respectively.

关键词： algorithm FSC critical

A Secured Iran？ Iran＇ s Independent Active Deterrence Strategy

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Contemporary International Relations 2017年第5期27卷 131-149页

作者： he jingjie Tel Aviv University' s Department of Political Science

Until now the Islamic Republic of Iran's adoption of an independent active deterrence strategy,a strategy based on threat assessment and self-assessment,has overall been a *** sole exception involved Iraq in 1980 and was due to Iran's initial vulnerability following the *** Saudi Arabia maneuvers with influence from US President Donald Trump,and given that Iran is unlikely to withdraw its military nuclear program under the existing security environment,the US and Israel ought to strengthen their nuclear deterrence capabilities against *** need to issue clear,open,official retaliation commitments under a hypothetical nuclear scenario and bolster them with corresponding military and diplomatic capability.

关键词： Iran security concept deterrence nuclear program

Reconstructing Dual Loyalties:Interaction between Host States' Perception and Diasporas' Reaction

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Contemporary International Relations 2018年第6期28卷 30-45页

作者： he jingjie the Department of Political Science at the hebrew University of Jerusalem

This article explores the dynamics of the Diaspora's dual loyalties towards their home countries and host countries by using American Jewry as a case study. It argues that in liberal-democratic states,the shift in the Diaspora's loyalty towards the homeland vis-à-vis the host land is a result of the change to the host land's perception of where the acceptable boundary of the Diaspora's practice of dual loyalties is, or in other words, to what extent the Diaspora's support of the homeland is perceived to be acceptable by their host land. The reconstruction of this boundary is determined by four factors: the degree of political coordination between home states and host states, the attempt of the home state to mobilize its diasporas, the means advocated and supported by the Diaspora, and the severity of potential consequences due to the Diaspora's action.

关键词： dual loyalties Israel the United States the diaspora

Topology optimization of magnetorheological smart materials included PnCs for tunable wide bandgap design

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Acta Mechanica Sinica 2022年第3期38卷 94-106,I0003页

作者： Kuan Liang jingjie he Zhiyuan Jia Xiaopeng Zhang State Key Laboratory of Structural Analysis for Industrial Equipment Dalian University of TechnologyDalian 116024China

Design and application of tunable phononic crystals(PnCs)are attracting increasing interest due to their promising capabilities to manipulate acoustic and elastic waves *** paper investigates topology optimization of the magnetorheological(MR)materials including PnCs for opening the tunable and wide ***,the bandgap tunability of the PnCs is achieved by shear modulus variation of MR materials under a continuously changing applied magnetic *** pseudo elemental densities representing the bi-material distribution inside the PnC unit cell are taken as design variables and interpolated with an artificial MR penalization *** aggregated bandgap index for enveloping the extreme values ofbandgap width and tunable range of the MR included smart PnCs is proposed as the objective *** this context,the sensitivity analysis scheme is derived,and the optimization problem is solved with the gradient-based mathematical programming *** effectiveness of the proposed optimization method is demonstrated by numerical examples,where the optimized solutions present tunable and stably wide bandgap characteristics under different magnetic *** tunable optimized PnCs based device that can provide a wider tunable bandgap range is also explored.

关键词： Topology optimization Tunable bandgap Phononic crystals Magnetorheological material

网络表达与公共讨论:基于“林松龄事件”中论坛回帖文本的情感分析(英文)

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国际新闻界 2015年第9期37卷 109-132页

作者：贺敬杰中国传媒大学播音主持艺术学院

基于"林松龄"社会热点事件,本研究对中国网民在"猫扑"论坛中的回帖文本进行了分析。为了通过应用情感分析方法进一步明确中国网民针对争议性热点事件的线上行为特征,本研究将研究对象分成两个维度,分别是网民个人化表达行为及网民回复... 详细信息

基于"林松龄"社会热点事件,本研究对中国网民在"猫扑"论坛中的回帖文本进行了分析。为了通过应用情感分析方法进一步明确中国网民针对争议性热点事件的线上行为特征,本研究将研究对象分成两个维度,分别是网民个人化表达行为及网民回复性讨论行为,并主要通过提取相应回帖文本的长度、标点、观点与话题的关系等信息以及测量回帖文本的情感极性,来分别得出个人化表达行为与回复性讨论行为的特征。研究发现,网民个人化的表达多趋向于以较简短的话语表达极其负面、激进、极端的情绪,且通常指向政府或相关权力机构;而就网民之间的讨论过程而言,绝多数参与者之间都表现为对抗式关系;被卷入争论的网民则表现得更具攻击性,从而争论发展到最后多偏离原有话题而演变成相互之间的人身攻击。

关键词：情感分析论坛回帖文本网民线上行为

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刑法修正案之立法质量的实证考察

中国刑事法杂志 2010年第5期 11-22页

作者：黑静洁北京大学法学院

立法质量是审查立法好坏程度的一个标准。对于《刑法修正案》而言,判断它的立法质量,必须从形式合理性与实质合理性两方面进行。通过对核心概念的操作化,根据修正的必要性与前瞻性两个变量检测立法对于形式合理性的实现程度。根据罪刑... 详细信息

立法质量是审查立法好坏程度的一个标准。对于《刑法修正案》而言,判断它的立法质量,必须从形式合理性与实质合理性两方面进行。通过对核心概念的操作化,根据修正的必要性与前瞻性两个变量检测立法对于形式合理性的实现程度。根据罪刑法定原则的明确性与罪刑相适应原则的犯罪严重性程度与刑罚严厉性程度进行对应比较,检测立法对于实质合理性的实现程度。通过对以此设计的立法质量检测指标体系的实际操作,发现《刑法修正案》的立法质量基本上满足形式合理性与实质合理性的要求,但在刑法的前瞻性与罪刑相适应两方面还需要进一步完善。另外,检测结果表明,刑法修正过程的理性程度不高,需要立法者警惕。

关键词：刑法修正案立法质量罪刑法定罪刑相适应

宣传话语的视觉“祛魅”:新媒体环境下网民对政治类新闻图片的再解读

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国际新闻界 2014年第7期36卷 38-51页

作者：盛希贵贺敬杰中国人民大学新闻学院中国人民大学新闻与社会发展研究中心

特定宣传话语作为权力精英用来维护政治权威性的非强制性手段,因与权力的合谋与生俱来便具有权威性、严肃性的"魅"之底色。然而,随着社会的变迁及技术的变革,公众对宣传合法性的怀疑及对新闻图片解释权的增强,使宣传话语的权威严肃乃至... 详细信息

特定宣传话语作为权力精英用来维护政治权威性的非强制性手段,因与权力的合谋与生俱来便具有权威性、严肃性的"魅"之底色。然而,随着社会的变迁及技术的变革,公众对宣传合法性的怀疑及对新闻图片解释权的增强,使宣传话语的权威严肃乃至真实之"魅"逐渐开始褪去神秘性光晕。本文认为,网民通过狂欢娱乐化处理、悬置语境预设解读图式等策略,对政治类新闻图片进行了"祛魅"。"祛魅"意味着去权威化、世俗化,但如果拿捏不当,则存在走向虚无、极化或"再赋魅"的风险。

关键词：宣传祛魅视觉传播政治传播网络狂欢

基于改进第一关键集的极化码SCLF译码算法

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北京邮电大学学报 2024年第2期47卷 74-80页

作者：袁建国贺京杰张丰果黄胜重庆邮电大学通信与信息工程学院重庆400065

为了改进极化码串行抵消列表比特翻转(SCLF)译码算法的误码性能,通过分析已完成译码的比特对未译码比特的影响,提出了一种优化SCLF译码算法的算法,改进了关键集精度。以第一关键集(FCS)作为初始关键集,通过计算比特不可靠度的理论值与... 详细信息

为了改进极化码串行抵消列表比特翻转(SCLF)译码算法的误码性能,通过分析已完成译码的比特对未译码比特的影响,提出了一种优化SCLF译码算法的算法,改进了关键集精度。以第一关键集(FCS)作为初始关键集,通过计算比特不可靠度的理论值与实际值,筛选出FCS中包含串行抵消状态路径的错误比特,并按信道可靠度升序排列形成改进第一关键集(IFCS)。用IFCS能有效提高翻转准确性并减少重译码次数。仿真结果表明,所提算法相较于基于修正关键集的SCLF译码算法和决策后处理SCLF译码算法具有更好的误码性能和更低的复杂度,同时还可以与小列表循环冗余校验辅助SCL(CA-SCL)译码算法结合,达到大列表CA-SCL译码算法的性能水平。

关键词：极化码第一关键集串行抵消列表比特翻转