Results 1 to 10 of about 178,102 (268)

On Quasi-Cyclic Codes of Index 3 [PDF]

open access: yesEntropy
Quasi-cyclic codes of index 3 over finite fields are studied. We give a classification of such codes. Their duals with respect to the Euclidean and Hermitian inner products are investigated.
Kanat Abdukhalikov, Rasha M. Shat
doaj   +2 more sources

Quantum Block and Convolutional Codes from Self-orthogonal Product Codes [PDF]

open access: yesProceedings. International Symposium on Information Theory, 2005. ISIT 2005., 2005
We present a construction of self-orthogonal codes using product codes. From the resulting codes, one can construct both block quantum error-correcting codes and quantum convolutional codes. We show that from the examples of convolutional codes found, we
Grassl, Markus, Roetteler, Martin
core   +5 more sources

New MDS Euclidean Self-Orthogonal Codes [PDF]

open access: yesIEEE Transactions on Information Theory, 2021
In this paper, a criterion of MDS Euclidean self-orthogonal codes is presented. New MDS Euclidean self-dual codes and self-orthogonal codes are constructed via this criterion. In particular, among our constructions, for large square $q$, about $\frac{1}{8}\cdot q$ new MDS Euclidean (almost) self-dual codes over $\F_q$ can be produced.
Xiaolei Fang, Meiqing Liu, Jinquan Luo
openaire   +2 more sources

Mass Formula for Self-Orthogonal and Self-Dual Codes over Non-Unital Rings of Order Four

open access: yesMathematics, 2023
We study the structure of self-orthogonal and self-dual codes over two non-unital rings of order four, namely, the commutative ring I=a,b|2a=2b=0,a2=b,ab=0 and the noncommutative ring E=a,b|2a=2b=0,a2=a,b2=b,ab=a,ba=b.
Adel Alahmadi   +4 more
doaj   +1 more source

Transitive distance-regular graphs from linear groups $L(3,q)$‎, ‎$q = 2,3,4,5$ [PDF]

open access: yesTransactions on Combinatorics, 2020
In this paper we classify distance-regular graphs‎, ‎including strongly regular graphs‎, ‎admitting a transitive action of the linear groups $L(3,2)$‎, ‎$L(3,3)$‎, ‎$L(3,4)$ and $L(3,5)$ for which the rank of the permutation representation is at most 15‎.
Andrea Svob
doaj   +1 more source

Construction of self-orthogonal Z2k-codes [PDF]

open access: yesDesigns, codes and cryptography, 2023
In this paper we give three constructions of cyclic self-orthogonal codes over Z_2^k, for k>=3, from Boolean functions on n variables.
Ban Martinović, Sara, Rukavina, Sanja
openaire   +1 more source

Self-Orthogonal Codes Constructed from Posets and Their Applications in Quantum Communication

open access: yesMathematics, 2020
It is an important issue to search for self-orthogonal codes for construction of quantum codes by CSS construction (Calderbank-Sho-Steane codes); in quantum error correction, CSS codes are a special type of stabilizer codes constructed from classical ...
Yansheng Wu, Yoonjin Lee
doaj   +1 more source

Blind Estimation of Spreading Code Sequence of QPSK-DSSS Signal Based on Fast-ICA

open access: yesInformation, 2023
Most of the existing estimation methods of spreading code sequence are not suitable for the QPSK-DSSS. We propose a spreading code sequence estimation method based on fast independent component analysis (Fast-ICA). It mainly includes signal preprocessing,
Lu Xu, Xiaxia Liu, Yijia Zhang
doaj   +1 more source

Binary LCD Codes and Self-Orthogonal Codes via Simplicial Complexes [PDF]

open access: yesIEEE Communications Letters, 2020
Due to some practical applications, linear complementary dual (LCD) codes and self-orthogonal codes have attracted wide attention in recent years. In this paper, we use simplicial complexes for construction of an infinite family of binary LCD codes and two infinite families of binary self-orthogonal codes.
Yansheng Wu, Yoonjin Lee
openaire   +2 more sources

Blind Estimation of Self-Synchronous Scrambler Using Orthogonal Complement Space in DSSS Systems

open access: yesIEEE Access, 2022
In a non-cooperative context, a receiver has to estimate the communication parameters without any prior knowledge of the transmitter, which is highly demanding.
Yoonji Kim   +3 more
doaj   +1 more source

Home - About - Disclaimer - Privacy