Results 31 to 40 of about 96,557 (255)

Research of LT Code Based on Key Information Feedback in Deep Space Communication

open access: yesIEEE Access, 2020
CCSDS LDPC code cannot effectively solve the problems of communication interruptions and high communication error rates in deep space communication. An application scheme of digital fountain code for deep space communication is thoroughly studied in this
Hai Tian   +3 more
doaj   +1 more source

A Formula for the Capacity of the General Gel'fand-Pinsker Channel [PDF]

open access: yes, 2014
We consider the Gel'fand-Pinsker problem in which the channel and state are general, i.e., possibly non-stationary, non-memoryless and non-ergodic. Using the information spectrum method and a non-trivial modification of the piggyback coding lemma by ...
Tan, Vincent Y. F.
core   +1 more source

DeepJSCC-Q: Channel Input Constrained Deep Joint Source-Channel Coding

open access: yesICC 2022 - IEEE International Conference on Communications, 2022
Recent works have shown that the task of wireless transmission of images can be learned with the use of machine learning techniques. Very promising results in end-to-end image quality, superior to popular digital schemes that utilize source and channel coding separation, have been demonstrated through the training of an autoencoder, with a non ...
Tung T. -Y.   +3 more
openaire   +3 more sources

A Journey from Improper Gaussian Signaling to Asymmetric Signaling

open access: yes, 2020
The deviation of continuous and discrete complex random variables from the traditional proper and symmetric assumption to a generalized improper and asymmetric characterization (accounting correlation between a random entity and its complex conjugate ...
Alouini, Mohamed-Slim   +3 more
core   +1 more source

Sparse Regression Codes for Multi-terminal Source and Channel Coding [PDF]

open access: yes, 2012
We study a new class of codes for Gaussian multi-terminal source and channel coding. These codes are designed using the statistical framework of high-dimensional linear regression and are called Sparse Superposition or Sparse Regression codes.
Tatikonda, Sekhar, Venkataramanan, Ramji
core   +1 more source

Successive Refinement of Images with Deep Joint Source-Channel Coding [PDF]

open access: yes2019 IEEE 20th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC), 2019
We introduce deep learning based communication methods for successive refinement of images over wireless channels. We present three different strategies for progressive image transmission with deep JSCC, with different complexity-performance trade-offs, all based on convolutional autoencoders.
D. Burth Kurka, D. Gunduz
openaire   +3 more sources

Network Coding Channel Virtualization Schemes for Satellite Multicast Communications

open access: yes, 2017
In this paper, we propose two novel schemes to solve the problem of finding a quasi-optimal number of coded packets to multicast to a set of independent wireless receivers suffering different channel conditions.
Ghanem, Samah A. M.   +3 more
core   +1 more source

Deep Joint Source-Channel Coding Based on Semantics of Pixels

open access: yes, 2022
The semantic information of the image for intelligent tasks is hidden behind the pixels, and slight changes in the pixels will affect the performance of intelligent tasks. In order to preserve semantic information behind pixels for intelligent tasks during wireless image transmission, we propose a joint source-channel coding method based on semantics ...
Sun, Qizheng   +5 more
openaire   +2 more sources

Deep Joint Source Channel Coding for Privacy-Aware End-to-End Image Transmission

open access: yesIEEE Transactions on Machine Learning in Communications and Networking
Deep neural network (DNN)-based joint source and channel coding is proposed for privacy-aware end-to-end image transmission against multiple eavesdroppers. Both scenarios of colluding and non-colluding eavesdroppers are considered.
Mehdi Letafati   +5 more
doaj   +1 more source

Relay Switching Aided Turbo Coded Hybrid-ARQ for Correlated Fading Channel

open access: yes, 2011
Hybrid-Automatic-Repeat-reQuest (HARQ) has become an indispensable technique in reliable communications systems. However, its performance is inevitably affected by the channel’s fading correlation. In this paper, we proposed a novel relay-switching aided
Hanzo, Lajos   +2 more
core   +1 more source

Home - About - Disclaimer - Privacy