Results 1 to 10 of about 182,680 (291)

An Embedding Strategy Using Q-Ary Convolutional Codes for Large and Small Payloads

open access: yesMathematics, 2021
Matrix embedding (ME) code is a commonly used steganography technique, which uses linear block codes to improve embedding efficiency. However, its main disadvantage is the inability to perform maximum likelihood decoding due to the high complexity of ...
Jyun-Jie Wang   +4 more
doaj   +1 more source

An Implementation of Error Minimization Data Transmission in OFDM using Modified Convolutional Code

open access: yesEmitter: International Journal of Engineering Technology, 2016
This paper presents about error minimization in OFDM system. In conventional system, usually using channel coding such as BCH Code or Convolutional Code. But, performance BCH Code or Convolutional Code is not good in implementation of OFDM System.
Hendy Briantoro   +2 more
doaj   +3 more sources

Analisis Kinerja FBMC OQAM menggunakan Kode Konvolusi

open access: yesJurnal Elkomika, 2021
ABSTRAK Sistem FBMC merupakan teknologi MCM yang dapat menyediakan laju data bit yang tinggi. Modulasi digital OQAM digunakan untuk meningkatkan bit rate. Pengkodean kanal digunakan untuk mengoreksi kesalahan yang diakibatkan noise.
MIFTAKHUDIN YUSUF   +2 more
doaj   +1 more source

On the coding rate for differential modulation and detections

open access: yes网络与信息安全学报, 2016
Differential demodulation is an important method of solving the information transmission which is used in the high dynamic condition of the wireless communication.The coding rate for differential modulation and detec-tions neither be too high,nor be too ...
Ya-chong XU,Dong-wei HU
doaj   +3 more sources

A Decoding Algorithm for Convolutional Codes

open access: yesMathematics, 2022
It is shown how the decoding algorithms of Pellikaan and Rosenthal can be coupled to produce a decoding algorithm for convolutional codes. Bounds for the computational cost per decoded codeword are also computed.
Sandra Martín Sánchez   +1 more
doaj   +1 more source

Minimal State-Space Representation of Convolutional Product Codes

open access: yesMathematics, 2021
In this paper, we study product convolutional codes described by state-space representations. In particular, we investigate how to derive state-space representations of the product code from the horizontal and vertical convolutional codes.
Joan-Josep Climent   +3 more
doaj   +1 more source

An Improved Blind Recognition Method for Synchronization Position and Coding Parameters of k/n Rate Convolutional Codes in a Noisy Environment

open access: yesIEEE Access, 2020
In digital communication systems, error correction codes are used to recover data that has been disturbed in a noisy environment. Convolutional code is a commonly used error correction code. In non-cooperative communication systems, it is very meaningful
Yong Ding, Zhiping Huang, Jing Zhou
doaj   +1 more source

Comparison of FFT-Based and DCT-Based Channel Estimation and ECC for OFDM System [PDF]

open access: yesEngineering and Technology Journal, 2015
Orthogonal Frequency Division Multiplexing (OFDM) has become a popular modulation method for high data rate wireless communications. In this paper, two schemes are proposed.
Awatif Ali Jafaar
doaj   +1 more source

Good Quantum Convolutional Error Correction Codes And Their Decoding Algorithm Exist [PDF]

open access: yes, 1998
Quantum convolutional code was introduced recently as an alternative way to protect vital quantum information. To complete the analysis of quantum convolutional code, I report a way to decode certain quantum convolutional codes based on the classical ...
A. Dholakia   +30 more
core   +2 more sources

Model-Based Design for Software Defined Radio on an FPGA

open access: yesIEEE Access, 2017
This paper presents an approach of model-based design for implementing a digital communication system on a field programmable gate array (FPGA) for a software defined radio (SDR).
Xin Cai, Mingda Zhou, Xinming Huang
doaj   +1 more source

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