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10th Asia and South Pacific Design Automation Conference

作者： Han, Yinhe Hu, Yu Li, Huawei Li, Xiaowei Chinese Acad Sci Comp Technol Inst Beijing 100080 Peoples R China

ISBN: (纸本)0780387368

This paper addresses the problem of test response compaction. In order to maximize compaction ratio, a single-output encoder based on check matrix of a (n, n-1, m, 3) convolutional code is proposed. Theoretic analysis for this encoder is presented to avoid two and any odd erroneous bit cancellations, handle one unknown bit(X bit) and diagnose one erroneous bit. The X-bits tolerance capacity can be enhanced by choosing a proper memory size and weight of check matrix, which can also be obtained by an optimized input assignment algorithm. The theoretic analysis and experimental results on aliasing shows the efficiency of the proposed encoder.

关键词： digital circuits logic testing integrated circuit testing convolutional codes x-tolerance enhancement convolutional code test response compaction compaction ratio single-output encoder check matrix bit cancellations X-bits tolerance capacity memory size

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Performance Analysis of MIMO-OFDM Systems with SIC Detection based on Single-RF with convolutional code 18

Performance Analysis of MIMO-OFDM Systems with SIC Detection...

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18th IEEE International Electronics Symposium (IES)

作者： Sari, Oktavia Kartika Astawa, I. Gede Puja Budikarso, Anang PENS Jl Raya ITS Kampus PENS Surabaya Indonesia

ISBN: (纸本)9781509016402

As the development of wireless communicationstechnology, the requirement to provide high speed data services and wide bandwidth increases. MIMO-OFDM (Multi Input Multi Output-Orthogonal Frequency Division Multiplexing) can provide greater information capacity and provide the quality of high-speed information in real time on a better multipath fading channel. The large number of antenna in MIMO system resulted in power being consumed increasingly large. The antenna system with Single Radio Frequency energy that can streamline lower cost. The combination of MIMO-OFDM based single RF produces modern technology for the development of telecommunications in the future. In this paper, research and analysis on performance of MIMO systems SIC-based detection using a single RF using convolutional code. This analysis is done by creating a simulation of MATLAB programs. The modulation technique used is QAM modulation. Channel model that will be used in this simulation is Rayleigh fading with added noise AWGN. The detector used in this system is the SIC (Successive Interference Cancellation). Channel estimation is performed using the MMSE (Minimum Mean Square Error). By having this information channel estimation of channel can be known for the sake of achievement of a high transmission rate and good quality. The result of this paper is the resulting performance of the system is expressed in the form of the curve of BER as a function of SNR with the amount of different modulation curve and the channel estimations that are displayed with the estimated magnitude and phase curves to change index subcarrier.

关键词： MIMO-OFDM Single RF M-QAM SIC convolutional code

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Performance Analysis of convolutional code over different code rates and Constraint length in Wireless Communication

Performance Analysis of Convolutional code over different Co...

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International Conference on I-SMAC (IoT in Social, Mobile, Analytics and Cloud) (I-SMAC)

作者： Dhaliwal, Semardeep Singh, Navdeep Kaur, Gagandeep YCoE Dept ECE Talwandi Sabo 151302 India Dept ECE Talwandi Sabo 151302 India Yadavindra Coll Engn Dept ECE Talwandi Sabo 151302 India

ISBN: (纸本)9781509032433

The Forward Error Correction (FEC) is appropriate technique used for controlling error in modern data transmission over noisy communication channels. convolutional coding using Viterbi decoding is one of the FEC technique used in modern wireless communication system. This paper analysis the bit error rate (BER) performance of convolutional code over different code rates and Constraint length using hard-decision Viterbi decoder. In this paper different code rates 1/4, 1/3, 1/2, 2/3 and Constraint length from 3 to 8 are have been simulated using MATLAB over AWGN channel and QPSK modulation.

关键词： forward error correction convolutional code viterbi decoding algorithm code rate constraint length AWGN channel

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Reducing PAPR of OFDM with convolutional code and 8-ask mapping

Reducing PAPR of OFDM with convolutional code and 8-ask mapp...

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International Conference on Wireless Communications, Networking and Mobile Computing

作者： Li, SC Yuan, DF Shandong Univ Sch Info Sci & Eng Jinan 250100 Peoples R China

ISBN: (纸本)078039335X

High Peak-to-Average Power Ratio (PAPR) has become one of the major disadvantages in OFDM system. Selective mapping (SLM) is an effective scheme to reduce PAPR. A novel scheme which uses convolutional code and 8-ask mapping based on SLM is presented in this paper. Simulation results show that the new scheme can reduce the PAPR significantly while the BER performance is low enough.

关键词： convolutional code 8-ask SLM PAPR CCDF

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An upper bound on bit error rate for concatenated convolutional code

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IEICE TRANSACTIONS ON FUNDAMENTALS OF ELECTRONICS COMMUNICATIONS AND COMPUTER SCIENCES 1997年第11期E80A卷 2123-2129页

作者： Wadayama, T Wakasugi, K Kasahara, M Faculty of Computer Science and System Engineering Okayama Prefectural University Soja-shi 719-11 Japan Department of Electronics and Information Science Kyoto Institute of Technology Kyoto-shi 606 Japan

This paper presents a new upper bound on overall bit error rate (BER) for a concatenated code which consists of an inner convolutional code and an outer interleaved Reed-Solomon code. The upper bound on BER is derived based on a lower bound on the effective minimum distance of the concatenated code. This upper bound can be used for the cases when the interleaver size is small such that the conventional upper bound is not applicable.

关键词： concatenated code convolutional code interleave Reed-Solomon code burst correction

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Fault-tolerant communication system based on convolutional code for the control of manipulator robots

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CONTROL ENGINEERING PRACTICE 2020年 101卷 104508-104508页

作者： Urrea, Claudio Kern, John Lopez, Ricardo Univ Santiago Chile Dept Elect Engn Grp Automat Santiago Chile

This paper presents the development of a convolutional code application for error detection and correction in a communication system. This application is based on an industrial protocol and aims at reconstructing data damaged during transmission. The Controller Area Network (CAN) protocol is used, which is widely used in the automobile industry, as well as in the automation of industrial processes. The application allows us to make a system that presents errors due to hostile conditions in the fault-tolerant industrial environment. These errors appear as corrupted data affecting the robot's control system. The robot is a 3 Degrees of Freedom (3-DoF) manipulator robot with redundancy in the plane;data transmission takes place between the controller and such a robot. The communication system is assessed in terms of performance when facing transmission faults, comparing the response of the system with and without error correction.

关键词： Robotics Communication Control convolutional code

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A Modified Algorithm for Determining Minimum and Free Distances of a convolutional code

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IETE Journal of Research 1981年第3期27卷 103-105页

The article describes a modified implementation of Forney's algorithm for determiningdminanddfreeof a conventional code when a ready-made sequential decoder is not available. This has been obtained by eliminating certain complexities in the Fano algorithm and is based on successive estimation of the values. Results for binary and ternary rate—½ codes are presented.

关键词： convolutional code Minimum Distance Free Distance

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Research on Decoding Algorithm for(n, 1, m) convolutional code

Research on Decoding Algorithm for(n, 1, m) Convolutional Co...

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2016 4th International Conference on Machinery,Materials and Computing Technology(ICMMCT 2016)

作者： Zou Yamei Pu Hongqiao Xu Zhiqiang Chengdu Aeronautic Polythchnic School of Sichuan College of Media and Communications

This paper takes(2, 1, 5) convolutional codes as example, disscusses the decoding algorithm for(n, 1, m) convolutional codes according to the principle of the reversibility of the modulo 2 *** designed the decoder and the syndrome of the(2, 1, 5) convolutional codesbased on its encoder firstly;then studied on the error correction methodused for one or two bits error within a constraint lengthaccording to the corresponding relationships between syndrome and the type of error codes;finally validity of this algorithm is verified through the computer simulation.

关键词： convolutional code Decoding Syndrome Error correction

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Simulation Design of Error Control System Based on convolutional code

Simulation Design of Error Control System Based on Convoluti...

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2017 International Conference on Computer, Electronics and Communication Engineering(CECE2017)

作者： Xiao-qing MA College of Information Engineering Xi'an Eurasia University

This paper completes the design of control system simulation of convolutional code error based on MATLAB software platform, the convolution encoding the input signal through the AWGN channel transmission, the receiver decodes the statistical transmission error rate, different rate and different SNR BER statistics under the receiver. The practice shows that the smaller the bit rate, the smaller the interference and the smaller bit error rate, and the higher the signal-to-noise ratio, the smaller the bit error rate.

关键词： convolutional code Error control Bit error rate

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Research and Simulation on the Performance of Turbo code and convolutional code in Advanced Orbiting Systems

Research and Simulation on the Performance of Turbo Code and...

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2013 IEEE 5th International Symposium on Microwave,Antenna,Propagation and EMC Technologies for Wireless Communications

作者： Chuanyu Wang Shanshan Wang Ye Tian Yufeng Ma Office of Space Weather National Satellite Meteorological Center School of Information Science and Engineering Shenyang Ligong University

ISBN: (纸本)9781467360760

Satellite communication is widely used in meteorological *** the satellite communication technologies,advanced orbiting systems(AOS) recommendation is an excellent one proposed by Consultative Committee for Space Data Systems(CCSDS).In AOS,the error correction coding schemes commonly used are convolutional coding,Turbo coding and RS *** coding and Turbo coding are studied in this *** encoding and decoding principle of convolutional code and Turbo code are analyzed.A simulation model of AOS communication system is also established,in which convolutional code and Turbo code are *** of Turbo code and convolution code are compared from three aspects:the bit error rate(BER),frame error rate(FER) and *** show that Turbo code works better than convolutional code from all these three aspects,especially under the condition of low Signal-to-Noise Ratio(SNR).

关键词： AOS Turbo code convolutional code bit error rate throughput turbo codes convolutional coding Throughput Satellite communication

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