Results 11 to 20 of about 183,620 (300)

Optimized Modulation and Coding for Dual Modulated QR Codes

open access: yesIEEE Transactions on Image Processing, 2022
<p> We present optimized modulation and coding for the recently introduced dual modulated QR (DMQR) codes that extend traditional QR codes to carry additional secondary data in the orientation of elliptical dots that replace black modules in the barcode images. By dynamically adjusting the dot size, we realize gains in embedding strength for both
Irving R. Barron, Gaurav Sharma
openaire   +2 more sources

Space–time line coded spatial modulation

open access: yesElectronics Letters, 2022
In this letter, a novel multiple‐input multiple‐output transceiver technique, named space–time line coded spatial modulation (STLC‐SM) is proposed, where two modulation symbols are transmitted through one of the multiple transmit antennas determined by ...
Ki‐Hun Lee   +2 more
doaj   +1 more source

Asymmetrically Clipped Optical Hadamard Coded Modulation (ACO-HCM)

open access: yesIEEE Photonics Journal, 2023
In many optical wireless communications systems, power efficiency is paramount. In others, flexibility is important. To achieve these goals, this paper presents a novel transmission scheme dubbed asymmetrically clipped optical Hadamard coded modulation ...
Henrik Schulze, Peter A. Hoeher
doaj   +1 more source

FPGA-Implemented Fractal Decoder with Forward Error Correction in Short-Reach Optical Interconnects

open access: yesEntropy, 2022
Forward error correction (FEC) codes combined with high-order modulator formats, i.e., coded modulation (CM), are essential in optical communication networks to achieve highly efficient and reliable communication.
Svitlana Matsenko   +7 more
doaj   +1 more source

Ternary Trellis Coded Modulation

open access: yesIEEE Access, 2019
Ternary trellis coded modulation (TTCM) is introduced. This combines triangular signal constellations with ternary convolutional codes. The performance of TTCM is presented and compared with binary trellis coded modulation (BTCM) which employs square ...
Mahmoud Abdelaziz, T. Aaron Gulliver
doaj   +1 more source

BICM-ID Labeling-Based Recipient Identification in a Heterogeneous Network

open access: yesSensors, 2023
The concept of labeling-based recipient identification (LABRID) for bit-interleaved coded modulation with iterative decoding (BICM-ID) is revisited.
Maciej Krasicki
doaj   +1 more source

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

Universal Construction for Polar Coded Modulation

open access: yesIEEE Access, 2018
Recently, the polarization weight (PW), independent of transmission channel, is proposed to construct the polar codes based on the partial orders (POs) of the polarized bit channels (PBCs).
Dekun Zhou, Kai Niu, Chao Dong
doaj   +1 more source

Covert Anti-Jamming Communication Based on Gaussian Coded Modulation

open access: yesApplied Sciences, 2021
In several wireless communication systems, robustness against jammers and covertness against eavesdroppers are required simultaneously. In this paper, we propose a novel covert anti-jamming communication system.
Haeung Choi, Sangjun Park, Heung-No Lee
doaj   +1 more source

Permutation Coding with Injections for Modified PAM System [PDF]

open access: yesInternational Journal of Electronics and Telecommunications, 2020
Arriving at a good combination of coding and modulation schemes that can achieve good error correction constitutes a challenge in digital communication systems.
Opeyemi O. Ogunyanda   +2 more
doaj   +1 more source

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