Results 41 to 50 of about 358 (161)

New Code Matched Interleaver for Turbo Codes with Short Frames

open access: yesAdvances in Electrical and Computer Engineering, 2010
Turbo codes are a parallel concatenation of two or more convolutional codes, separated by interleavers, therefore their performance is not influenced just by the constituent encoders, but also by the interleaver.
LAZAR, G. A.   +3 more
doaj   +1 more source

Interleavers [PDF]

open access: yes, 2006
The chapter describes principles, analysis, design, properties, and implementations of optical frequency (or wavelength) interleavers. The emphasis is on finite impulse response devices based on cascaded Mach-Zehnder-type filter elements with carefully designed coupling ratios, the so-called resonant couplers.
de Ridder, R.M., Roeloffzen, C.G.H.
openaire   +2 more sources

Parallel Concatenated Block Codes Constructed by Convolutional Interleavers

open access: yesIEEE Access, 2021
This paper presents the application of convolutional interleavers for constructing high performance parallel concatenated block (PCB) codes. The utilized interleaver is operated as a block interleaver, when the number of stuff bits is applied at the ...
Sina Vafi
doaj   +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

Interleaved Prange: A New Generic Decoder forĀ Interleaved Codes

open access: yes, 2022
Due to the recent challenges in post-quantum cryptography, several new approaches for code-based cryptography have been proposed. For example, a variant of the McEliece cryptosystem based on interleaved codes was proposed. In order to deem such new settings secure, we first need to understand and analyze the complexity of the underlying problem, in ...
Anmoal Porwal   +5 more
openaire   +2 more sources

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

Performance of Serial Concatenated Convolutional Code with Dithered Golden Section Channel Interleaver over Frequency Selective Rayleigh Fading Channel

open access: yesJournal of Engineering and Sustainable Development, 2005
Serial 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.
Raghad Z. AL-Macdici
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

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  

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