Results 101 to 110 of about 30,630 (205)

Maximal codeword lengths in Huffman codes [PDF]

The following question about Huffman coding, which is an important technique for compressing data from a discrete source, is considered. If p is the smallest source probability, how long, in terms of p, can the longest Huffman codeword be?
Abu-Mostafa, Y. S., Mceliece, R. J.
core   +1 more source

Lightweight Data Compression in Wireless Sensor Networks Using Huffman Coding

International Journal of Distributed Sensor Networks, 2014
This paper presents a lightweight data compression method for wireless sensor networks monitoring environmental parameters with low resolution sensors. Instead of attempting to devise novel ad hoc algorithms, we show that, given general knowledge of the ...
Henry Ponti Medeiros, Marcos Costa Maciel, Richard Demo Souza, Marcelo Eduardo Pellenz   +3 more
doaj   +1 more source

Huffman Deep Compression of Edge Node Data for Reducing IoT Network Traffic

IEEE Access
Data compression at the Internet of Things (IoT) edge node aims to minimize data traffic in smart cities. The traditional Huffman Coding Algorithm (HCA) is shown as the most effective compression algorithm for sensor data.
Ammar Said Nasif, Zulaiha Ali Othman, Nor Samsiah Sani, Mohammad Kamrul Hasan, Yousra Abudaqqa   +4 more
doaj   +1 more source

Image Watermarking based on Huffman Coding and Laplace Sharpening

مجلة كلية التربية للبنات, 2019
In this paper, an algorithm through which we can embed more data than the regular methods under spatial domain is introduced. We compressed the secret data using Huffman coding and then this compressed data is embedded using laplacian sharpening method ...
Muna M. Lafta
doaj  

A cryptographic method to have a secure communication of health care digital data into the cloud

Automatika
Cloud computing is a technology that holds great promise and has potential to revolutionize the healthcare sector. Many security and privacy issues are brought up by the cloud’s centralization of data for both patients and healthcare professionals. There
K. Selvakumar, S. Lokesh
doaj   +1 more source

Joint space-time Huffman limited feedback precoding for spatially and temporally correlated MIMO channels

Tongxin xuebao, 2013
For the MIMO channels with space correlation and time correlation, a novel joint space-time Huffman limited feedback precoding scheme was proposed which improves the system performance and reduces the amount of feedback.
Mei-yan JU, Xin GE, Yue-heng LI, Guo-ping TAN   +3 more
doaj  

Creating and Developing a High-Throughput Covert Channel via Program Execution

IEEE Access
A covert communication channel facilitates direct data transfer between two parties through pre-communication knowledge agreements, ensuring secure and confidential transmission of information.
Abdulrahman Alhelal, Mohammad Al-Khatib
doaj   +1 more source

Analysis of DICOM Image Compression Alternative Using Huffman Coding. [PDF]

J Healthc Eng, 2019
Rahmat RF, Andreas TSM, Fahmi F, Pasha MF, Alzahrani MY, Budiarto R.   +5 more
europepmc   +1 more source

Maximum Likelihood Decoder for Variable Length Codes

Sir Syed University Research Journal of Engineering and Technology, 2012
Variable Length Codes (VLC) are used to transfer same amount of digital information in relatively short period of time. In variable length coding, the characters with higher probability of occurrence are assigned shorter bits sequence and the characters
Syed Misbahuddin, Mohammed Talal Simsim
doaj  

Huffman source coding

, 2021
Abstract. In this work, A Huffman source coding system is studied and implemented. The work will go through the basics of the source coding theorem, standard Huffman code is introduced, its weaknesses in a practical system are presented, and finally, methods and algorithms are introduced to overcome these weaknesses.
openaire   +1 more source