Results 31 to 40 of about 868,591 (197)

Distributed Source-coding, Channel-coding and Modulation for Cooperative Communications [PDF]

open access: yes, 2010
In this contribution, we propose a novel Distributed Source-coding, Channel-coding and Modulation (DSCM) scheme for cooperative communications. The proposed DSCM scheme is designed for ensuring the decoding convergence of its constituent component codes,
Ng, Soon   +5 more
core   +2 more sources

Combined Source-Channel Coding of Images under Power and Bandwidth Constraints

open access: yesEURASIP Journal on Advances in Signal Processing, 2007
This paper proposes a framework for combined source-channel coding for a power and bandwidth constrained noisy channel. The framework is applied to progressive image transmission using constant envelope M-ary phase shift key (M-PSK) signaling over an ...
Marc Fossorier   +2 more
doaj   +2 more sources

Modified SNR Gap Approximation for Resource Allocation in LDPC-Coded Multicarrier Systems

open access: yesIEEE Access, 2020
The signal-to-noise ratio (SNR) gap approximation provides a closed-form expression for the SNR required for a coded modulation system to achieve a given target error performance for a given constellation size. This approximation has been widely used for
Adriaan Suls   +3 more
doaj   +1 more source

Functional Materials for Environmental Energy Harvesting in Smart Agriculture via Triboelectric Nanogenerators

open access: yesAdvanced Functional Materials, Volume 36, Issue 13, 12 February 2026.
This review explores functional and responsive materials for triboelectric nanogenerators (TENGs) in sustainable smart agriculture. It examines how particulate contamination and dirt affect charge transfer and efficiency. Environmental challenges and strategies to enhance durability and responsiveness are outlined, including active functional layers ...
Rafael R. A. Silva   +9 more
wiley   +1 more source

LDPC-Coded Generalized Frequency Division Multiplexing for Intensity-Modulated Direct-Detection Optical Systems

open access: yesIEEE Photonics Journal, 2019
In this paper, a low-density parity check (LDPC) coded GFDM with high-level modulation scheme is proposed for more flexible and advanced multicarrier modulation in intensity-modulated/direct-detection (IM/DD) optical systems.
Dong Guo   +10 more
doaj   +1 more source

Hybrid VLC–IR Communication System With Beam‐Steered Uplink and Turbo Coding Under Mobility

open access: yesIET Optoelectronics, Volume 20, Issue 1, January/December 2026.
This paper presents a hybrid VLC–IR communication system integrating a beam‐steered infrared uplink with Turbo coding for reliable indoor optical wireless links. The proposed architecture achieves BER below 10−3 at 10 dB SNR and maintains stable coverage under NLOS conditions through adaptive beam steering.
Saeed Ahmed Ansari
wiley   +1 more source

Spectral Efficiency Improved 2D-PAM8 Trellis Coded Modulation for Short Reach Optical System

open access: yesIEEE Photonics Journal, 2017
This paper proposes and demonstrates a 31.25 Gbps two-dimensional eight level pulse amplitude modulation with trellis coded modulation (2D-PAM8-TCM) transmission in intensity modulation and direct detection based short reach system. In this system,
Yan Fu   +5 more
doaj   +1 more source

Soft Output M‐Algorithm Based Quantum Data Detection for Polar Coded Wireless Quantum Optical Multipath Communications

open access: yesIET Quantum Communication, Volume 7, Issue 1, January/December 2026.
Entanglement‐based quantum communication schemes, such as quantum teleportation, rely on classical communication links, which introduce significant transmission overhead and limit the achievable quantum advantage. To address this issue, this work investigates a non‐entanglement‐based‐quantum communication concept.
Kushtrim Dini, Peter Jung
wiley   +1 more source

Near-capacity turbo trellis coded modulation design based on EXIT charts and union bounds

open access: yes, 2008
Bandwidth efficient parallel-concatenated Turbo Trellis Coded Modulation (TTCM) schemes were designed for communicating over uncorrelated Rayleigh fading channels.
Alamri, Osamah   +4 more
core   +1 more source

Design and testing of a real time simulation for Trellis Coded Modulation [PDF]

open access: yes, 1995
Bibliography: leaves 75-76.The aim of this project is to build and test a real time simulation for Trellis Coded Modulation(TCM). The tests to be performed are a comparison between Ungerboeck and pragmatic codes and varying and observing different ...
Benzakein, Allon
core   +1 more source

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