Results 21 to 30 of about 94,000 (327)

Efficient Decoding of Turbo Codes with Nonbinary Belief Propagation

open access: yesEURASIP Journal on Wireless Communications and Networking, 2008
This paper presents a new approach to decode turbo codes using a nonbinary belief propagation decoder. The proposed approach can be decomposed into two main steps.
Lestable Thierry   +2 more
doaj   +2 more sources

Beyond Gbps Turbo Decoder on Multi-Core CPUs [PDF]

open access: yes, 2016
International audienceThis paper presents a high-throughput implementation of a portable software turbo decoder. The code is optimized for traditional multi-core CPUs (like x86) and it is based on the Enhanced max-log-MAP turbo decoding variant. The code
Aumage, Olivier   +5 more
core   +3 more sources

Coded modulation scheme employing turbo codes

open access: yesElectronics Letters, 1995
The authors present a turbo coding scheme for bandwidth-efficient modulation that outperforms turbo coding with Gray mapping by employing Ungerboeck codes as component codes. The scheme can be decoded iteratively and achieves very good bit error rates at low signal to noise ratios after a small number of iterations. 8PSK is used as an example, although
Robertson, P., Wörz, T.
openaire   +3 more sources

EXIT-chart aided near-capacity quantum turbo code design [PDF]

open access: yes, 2014
High detection complexity is the main impediment in future Gigabit-wireless systems. However, a quantum-based detector is capable of simultaneously detecting hundreds of user signals by virtue of its inherent parallel nature.
Babar, Zunaira   +2 more
core   +2 more sources

THE EFFECT OF TRELLIS TERMINATION ON THE PERFORMANCE OF TURBO CODE

open access: yesJournal of Engineering, 2003
This paper introduces a new class of convolutional codes, which is called Turbo Code. Turbo Code was shown to achieve performance in terms of Bit-Error-Rate (BER), which is near Shannon limit.
H.H. Abbas, W. A. Mahmoud, S.K. Omran
doaj   +1 more source

Enancement The Reverse Link Capacity of Third Generation Mobile Radio System [PDF]

open access: yesEngineering and Technology Journal, 2005
The paper investigates the effect of including the turbo coding in the 3G system . The bit error rate performance of the system with AWGN channel is investigated to study the effect of number of iteration , frame size , code rate and memory size of the ...
siddeq Muhaned   +2 more
doaj   +1 more source

A Flexible LDPC/Turbo Decoder Architecture [PDF]

open access: yes, 2010
Low-density parity-check (LDPC) codes and convolutional Turbo codes are two of the most powerful error correcting codes that are widely used in modern communication systems. In a multi-mode baseband receiver, both LDPC and Turbo decoders may be required.
Cavallaro, Joseph R., Sun, Yang
core   +2 more sources

Simple Metrics for Turbo Code Interleavers

open access: yesElectrica, 2019
In this paper, we consider the searching for good turbo code interleavers. Especially, we focus on the permutation polynomial interleavers. Three key properties (i.e.
Hao HE   +4 more
doaj   +2 more sources

Examples of minimal-memory, non-catastrophic quantum convolutional encoders [PDF]

open access: yes, 2011
One of the most important open questions in the theory of quantum convolutional coding is to determine a minimal-memory, non-catastrophic, polynomial-depth convolutional encoder for an arbitrary quantum convolutional code.
Hosseini-Khayat, Saied   +2 more
core   +4 more sources

Improving 3D-Turbo Code's BER Performance with a BICM System over Rayleigh Fading Channel [PDF]

open access: yesRadioengineering, 2016
Classical Turbo code suffers from high error floor due to its small Minimum Hamming Distance (MHD). Newly-proposed 3D-Turbo code can effectively increase the MHD and achieve a lower error floor by adding a rate-1 post encoder.
R. Yao, Y. Zhu, J. Xu, F. Gao, L. Wang
doaj  

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