Results 1 to 10 of about 112 (104)
A Cipher Based on Prefix Codes [PDF]
Sensors, 2021 A prefix code, a P-code, is a code where no codeword is a prefix of another codeword. In this paper, a symmetric cipher based on prefix codes is proposed. The simplicity of the design makes this cipher usable for Internet of Things applications. Our goal
Viliam Hromada +2 more
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A Characterization of Optimal Prefix Codes
EntropyA property of prefix codes called strong monotonicity is introduced, and it is proven that for a given source, a prefix code is optimal if and only if it is complete and strongly monotone.
Spencer Congero
exaly +6 more sources
On the decomposition of prefix codes
Theoretical Computer Science, 2017 The paper deals with the decomposition of rational and maximal prefix codes. A set \(X \subset A^*\) is said to be \textit{rational} if it is accepted by a finite automaton. It is a \textit{code} if it is uniquely decodable, that is, if for all \(h,k \geq 0\) and \(c_1, c_2, \ldots, c_h, \, c_1', c_2', \ldots, c_k' \in X\) one has \[ c_1 c_2 \cdots c_h
Clélia de Felice, Antonio Restivo
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Conjugacy relations of prefix codes
Theoretical Computer Science, 2016 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Yong He, Zhenhe Cui, Zihan Yuan
exaly +3 more sources
Optimal Design of OFDM Radar Low Sidelobe Waveform Based on Genetic Algorithm [PDF]
Hangkong bingqi, 2021 Radar system environment is complex, and excessively high range sidelobes will cause weak targets to be lost and false targets. To solve this problem, a novel orthogonal frequency-division multiplexing(OFDM) radar low sidelobe waveform design method ...
Zhao Jinshan, Quan Yinghui, Liu Daijun, Zhang Rui, Xing Mengdao
doaj +1 more source
Generalization of Fibonacci Codes to the Non-Binary Case
IEEE Access, 2022 Motivated by expected technological developments in which the basic unit of storage might possibly be $d$ -ary elements, with $d > 2$ , and not just bits, we extend the traditional Fibonacci code to non-binary codes of higher order, and prove their ...
Shmuel T. Klein +2 more
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A Note on the Maximum Size of a Prefix Code
IEEE Access, 2022 In the presented paper, we investigate the problem of finding the maximum possible cardinality of a dictionary of a prefix code for a string of a given length.
Viliam Hromada, Otokar Grosek
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Jurnal Elkomika, 2021 ABSTRAK Generasi telekomunikasi kelima (5G) diterapkan pada 2021 dengan frekuensi tinggi yang menyebabkan redaman yang besar dibandingkan pita sub-1 GHz. Penelitian ini mengkaji sistem 5G dengan frekuensi operasi 3,3 GHz dan bandwidth 99 MHz berdasarkan
RENI DYAH WAHYUNINGRUM +2 more
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Average Redundancy for Known Sources: Ubiquitous Trees in Source Coding [PDF]
Discrete Mathematics & Theoretical Computer Science, 2008 Analytic information theory aims at studying problems of information theory using analytic techniques of computer science and combinatorics. Following Hadamard's precept, these problems are tackled by complex analysis methods such as generating functions,
Wojciech Szpankowski
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A Quaternary Code Correcting a Burst of at Most Two Deletion or Insertion Errors in DNA Storage
Entropy, 2021 Due to the properties of DNA data storage, the errors that occur in DNA strands make error correction an important and challenging task. In this paper, a new code design of quaternary code suitable for DNA storage is proposed to correct at most two ...
Thi-Huong Khuat, Sunghwan Kim
doaj +1 more source