Results 41 to 50 of about 178,102 (268)

Performance Evaluation of Spatial Modulation and QOSTBC for MIMO Systems

open access: yesEAI Endorsed Transactions on Mobile Communications and Applications, 2015
Multiple-input multiple-output (MIMO) systems require simplified architectures that can maximize design parameters without sacrificing system performance. Such architectures may be used in a transmitter or a receiver.
K.O.O. Anoh   +5 more
doaj   +1 more source

The invariants of the Clifford groups [PDF]

open access: yes, 1999
The automorphism group of the Barnes-Wall lattice L_m in dimension 2^m (m not 3) is a subgroup of index 2 in a certain ``Clifford group'' C_m (an extraspecial group of order 2^(1+2m) extended by an orthogonal group).
Nebe, Gabriele   +2 more
core   +7 more sources

Quantum Emitters in Hexagonal Boron Nitride: Principles, Engineering and Applications

open access: yesAdvanced Functional Materials, EarlyView.
Quantum emitters in hexagonal boron nitride have emerged as a promising candidate for quantum information science. This review examines the fundamentals of these quantum emitters, including their level structures, defect engineering, and their possible chemical structures.
Thi Ngoc Anh Mai   +8 more
wiley   +1 more source

Compile the Code Instrumentation Technique for Selective Debugging of Optimizing Transformations

open access: yesТруды Института системного программирования РАН, 2018
The paper addresses the problem of an optimizing compiler debugging. A new method for compile-time instrumentation is presented as an efficient approach to improve reliability of optimizing transformations implemented in the compiler.
D. A. Maksimenkov
doaj   +1 more source

Low‐Symmetry Weyl Semimetals: A Path to Ideal Topological States

open access: yesAdvanced Functional Materials, EarlyView.
This study presents a theoretical framework for realizing ideal Weyl semimetals, where Weyl nodes are well‐isolated at the Fermi level. The approach is exemplified in the low‐symmetry material Cu2SnSe3, which exhibits tunable topological phases, current‐induced orbital magnetization, and a strong circular photogalvanic effect, making it a promising ...
Darius‐Alexandru Deaconu   +3 more
wiley   +1 more source

Construction of Hermitian Self-Orthogonal Codes and Application

open access: yesMathematics
We introduce some methods for constructing quaternary Hermitian self-orthogonal (HSO) codes, and construct quaternary [n, 5] HSO for 342≤n≤492. Furthermore, we present methods of constructing Hermitian linear complementary dual (HLCD) codes from known ...
Yuezhen Ren, Ruihu Li, Hao Song
doaj   +1 more source

MIMO Self-Encoded Spread Spectrum with Iterative Detection over Rayleigh Fading Channels

open access: yesJournal of Electrical and Computer Engineering, 2010
Self-encoded spread spectrum (SESS) is a novel communication technique that derives its spreading code from the randomness of the source stream rather than using conventional pseudorandom noise (PN) code.
Shichuan Ma   +3 more
doaj   +1 more source

Waveform Design for Dual-Function Radar-Communication System With Golay Block Coding

open access: yesIEEE Access, 2019
In view of the defects that high range side lobes and high peak-to-average power radio (PAPR) in radar and communication integrated systems based on traditional orthogonal frequency division multiplexing (OFDM), a co-designed OFDM waveform based on Golay
Wanlu Li, Zheng Xiang, Peng Ren
doaj   +1 more source

Self-Orthogonal Codes from Plateaued Functions

open access: yesChinese Journal of Electronics
Self-orthogonal codes are of interest as they have important applications in quantum codes, lattices and many areas. In this paper, based on the weakly regular plateaued functions or plateaued Boolean functions, we construct a family of linear codes with four nonzero weights. This family of linear codes is proved to be not only self-orthogonal but also
Wang, Peng, Heng, Ziling
openaire   +2 more sources

Weight enumerators of self-orthogonal codes

open access: yesDiscrete Mathematics, 1974
AbstractCanonical forms are given for (i) the weight enumerator of an |n, 12(n−1)| self-orthogonal code, and (ii) the split weight enumerator (which classifies the codewords according to the weight of the left-and right-half words) of an |n, 12n| self-dual code.
Mallows, C.L., Sloane, N.J.A.
openaire   +2 more sources

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