Results 51 to 60 of about 2,760 (289)

Sub‐Diffraction and Irreversibly Tunable Imaging With Potato Starch Lenses

open access: yesAdvanced Optical Materials, EarlyView.
Native potato starch granules function as sustainable birefringent microlenses that enable polarization‐controlled conventional and vortex lensing via spin‐to‐orbital angular momentum conversion. They provide sub‐diffraction and spiral‐contrast imaging, support vortex‐array generation with controllable topological‐charge sign, exhibit irreversible ...
Petr Bouchal   +5 more
wiley   +1 more source

Interleaver Design for Parallel Concatenated Block Codes With Arbitrary Lengths

open access: yesIEEE Access
Parallel Concatenated Block (PCB) codes are conventionally constituted by two identical linear systematic block codes, as component codes, linked by an interleaver. In general, the PCB code’s interleaver length (or message length) is the square of
Vijayasri Sundarapuram Soundayan   +1 more
doaj   +1 more source

The NLM interleaver design for IDMA system

open access: yes, 2012
International audienceThe choice of a "good" interleaver in IDMA systems must demonstrate that the interleavers do not "collide" and easy to generate.
Ferré, Guillaume   +5 more
core   +1 more source

Strategy of Triple‐Gradient in Binary Pixels for Flexible Pressure Sensing with High Sensitivity and Wide‐Range Linearity

open access: yesAdvanced Science, EarlyView.
A flexible pressure sensor with triple‐gradient design of conductivity, modulus, and dimension in binary micro‐dome pixels is proposed. Based on precisely‐designed CNT/PDMS matrix, the device exhibits a linear sensitivity of 974.1 kPa−1 across range up to 1.8 MPa (R2 > 0.99), offering an effective strategy for potential applications in healthcare ...
Yifan Liu   +9 more
wiley   +1 more source

Efficient Selection of Circular and Random Interleaver for Turbo Codes Multiuser CDMA System with Hadamard Spreading code in AWGN and Rayleigh Fading Channels

open access: yesJournal of Engineering and Sustainable Development, 2012
Recently, turbo codes have attracted many researchers because of the codes astonishing performance at low signal to noise ratio SNR. The interleaver types and lengths is an important part in the design of a turbo code.
Ghanim Abd AL Kareem
doaj  

Enhanced Blind Interleaver Parameters Estimation Algorithm for Noisy Environment

open access: yesIEEE Access, 2018
This paper proposes a blind interleaver parameters estimation method enhanced by identifying relatively error-less partial symbols among intercepted streams.
Changryoul Choi, Dongweon Yoon
doaj   +1 more source

Collision Free Row Column S-random Interleaver

open access: yes, 2009
Parallel decodable turbo codes (PDTCs) are suitable for concurrent decoding and hence have low latency. Memory collision issue is an important problem met during parallel processing.
Yılmaz, Ayşen   +2 more
core   +1 more source

Hierarchical Multi‐Mode Computing in Interlayer‐Coupled 3D RRAM Crossbar Arrays

open access: yesAdvanced Science, EarlyView.
2‐deck RRAM crossbar array provides a versatile hardware platform for multifunctional in‐memory computing. Stacked, series, and entropy node configurations enable multi‐layer conductance modulation, logic‐in‐memory operation, genetic learning, and reconfigurable physical unclonable functions.
Seungman Park   +7 more
wiley   +1 more source

Investigating the Performance of Turbo Code in WCDMA Downlink over Frequency Selective Rayleigh Fading Channel

open access: yesJournal of Engineering and Sustainable Development, 2006
In this research parallel concatenated convolutional coding with iterative decoding is examined for data transmission over the downlink of a WCDMA system employing BPSK modulation and coherent Rake receiver.
Mohammed Hatim Khdair
doaj  

A Multi-Objective Genetic Algorithm Approach for Silicon Photonics Design

open access: yesPhotonics
A multi-objective genetic algorithm approach is formulated to optimize the design of silicon-photonics complex circuits with contradicting performance metrics and no closed-form expression for the circuit performance.
Hany Mahrous   +5 more
doaj   +1 more source

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