Results 11 to 20 of about 137 (124)
Improved Iterative Decoding of Network-Channel Codes for Multiple-Access Relay Channel. [PDF]
Int Sch Res Notices, 2015 Cooperative communication using relay nodes is one of the most effective means of exploiting space diversity for low cost nodes in wireless network. In cooperative communication, users, besides communicating their own information, also relay the information of other users.
Majumder S, Verma S.
europepmc +2 more sources
IET Communications, Volume 16, Issue 17, Page 2019-2035, October 2022., 2022 Abstract Spatially coupled low‐density parity‐check (SC‐LDPC) codes generally use a window decoding scheme, which is known to yield a near‐optimal decoding, compared to full block decoding. Recently, a non‐uniform schedule has been proposed to eliminate unnecessary updates of variable nodes within a window: this schedule is generated based on the ...
Sirawit Khittiwitchayakul +2 more
wiley +1 more source
Security and Communication Networks, Volume 2022, Issue 1, 2022., 2022 In order to improve the efficiency of communication network path selection, this paper combines the graph convolutional neural network to formulate the communication network path selection strategy and selects the enhanced decoding algorithm as the fixed‐point decoding algorithm. For the quantization scheme based on the enhanced decoding algorithm, the
Xiaojun Zhang, Zhiping Cai
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Security and Communication Networks, Volume 2021, Issue 1, 2021., 2021 With the development of the Internet, social network platforms (SNPs) have become the most common channel for image sharing. As a result, transmitting stego images in the public channels gives steganographers the best opportunity to transmit secret messages with behavioral security preserved.
Haocheng Fu +3 more
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Combined Source-Channel Coding of Images under Power and Bandwidth Constraints
EURASIP 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
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A Novel Concatenated Coded Modulation Based on GFDM for Access Optical Networks
IEEE Photonics Journal, 2018 In this paper, we proposed a novel concatenated coded modulation composed of adaptive turbo code with trellis-coded modulation (ATTCM) that is based on generalized frequency division multiplex (GFDM) system.
Feng Tian +6 more
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Distributed Joint Source-Channel Coding-Based Adaptive Dynamic Network Coding
IEEE Access, 2020 Distributed Source Coding (DSC) schemes rely on separate encoding but joint decoding of statistically dependent sources, which exhibit correlation. More specifically, Distributed Joint Source-Channel coding (DJSC) is associated with the scenario, where ...
Abdulah Jeza Aljohani, Soon Xin Ng
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Performance of OFDM: FSO Communication System with Hybrid Channel Codes during Weak Turbulence
Journal of Computer Networks and Communications, Volume 2019, Issue 1, 2019., 2019 The performance of orthogonal frequency division multiplexing‐ (OFDM‐) based free‐space optics (FSO) depends on various parameters such as number of subcarriers, base band modulation, nature of laser beam, turbulence modelling, and much more. Various diversity techniques have been studied by researchers for the improvement of signal strength due to ...
Ritu Gupta +3 more
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Channel Coding for Multi‐Carrier Wireless Partial Duplex
Wireless Communications and Mobile Computing, Volume 2019, Issue 1, 2019., 2019 In order to leverage the spectrum resources, several forms of wireless duplex have been introduced and investigated in recent years. In Partial Duplex (PD) schemes, part of the band is transmitted in Full‐Duplex (FD) and the rest in Half‐Duplex (HD); therefore, some transmitted symbols will be characterized, at the receiver, by high SNR (Signal‐to ...
Hamid R. Barzegar +2 more
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Coplanar Turbo‐FSK: A Flexible and Power Efficient Modulation for the Internet‐of‐Things
Wireless Communications and Mobile Computing, Volume 2018, Issue 1, 2018., 2018 As the Internet‐of‐Things (IoT) has expanded, multiple solutions have attempted to address the issues of the Low Power Wide Area (LPWA) networks physical layer. In a previous work, we proposed the Turbo‐FSK, a constant envelope modulation with orthogonal alphabet that allows the receiver to operate at very low levels of power (high sensitivity ...
Yoann Roth +4 more
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