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The Internet of Things (IoT) has transformed many industries, and LoRaWAN (Long Range Wide Area Network), built on LoRa (Long Range) technology, has become a crucial solution for enabling scalable, low-cost, and energy-efficient…

We propose a new coding scheme, called the delayed coding (DC) scheme, for channels with insertion, deletion, and substitution (IDS) errors. The proposed scheme employs delayed encoding and non-iterative detection and decoding strategies to…

信息论 · 计算机科学 2022-05-25 Ryo Shibata , Hiroyuki Yashima

Deep learning-based image compression algorithms typically focus on designing encoding and decoding networks and improving the accuracy of entropy model estimation to enhance the rate-distortion (RD) performance. However, few algorithms…

图像与视频处理 · 电气工程与系统科学 2024-10-08 Junhui Li , Jutao Li , Xingsong Hou , Huake Wang

We consider a multipoint-to-point network in which sensors periodically send measurements to a gateway. The system uses Long Range (LoRa) communications in a frequency band with duty-cycle limits. Our aim is to enhance the reliability of…

网络与互联网体系结构 · 计算机科学 2019-04-15 Siddhartha Borkotoky , Christian Bettstetter , Udo Schilcher , Christian Raffelsberger

L-band Digital Aeronautical Communication System (LDACS) aims to exploit vacant spectrum in L-band via spectrum sharing, and orthogonal frequency division multiplexing (OFDM) is the currently accepted LDACS waveform. Recently, various works…

信号处理 · 电气工程与系统科学 2021-01-19 N. Agrawal , A. Ambede , S. J. Darak , A. P. Vinod , A. S. Madhukumar

In this paper, we study a compute-and-forward (CAF) relaying scheme with low-density parity-check (LDPC) codes, a special case of physical layer network coding, under the quadrature phase shift keying (QPSK) modulation. The novelty of this…

信息论 · 计算机科学 2019-04-18 Satoshi Takabe , Tadashi Wadayama , Ángeles Vazquez-Castro , Masahito Hayashi

The rapidly improving performance of modern hardware renders convolutional codes obsolete, and allows for the practical implementation of more sophisticated correction codes such as low density parity check (LDPC) and turbo codes (TC). Both…

信息论 · 计算机科学 2015-03-20 Jarosław Duda , Paweł Korus

A perturbation-based nonlinear compensation scheme assisted by a feedback from the forward error correction (FEC) decoder is numerically and experimentally investigated. It is shown by numerical simulations and transmission experiments that…

信号处理 · 电气工程与系统科学 2019-02-27 Edson P. da Silva , Metodi P. Yankov , Francesco Da Ros , Toshio Morioka , Leif K. Oxenløwe

Lattice codes with optimal decoding coefficient are capacity-achieving when dimension $N \rightarrow \infty$. In communications systems, finite dimensional lattice codes are considered, where the optimal decoding coefficients may still fail…

信息论 · 计算机科学 2025-01-09 Jiajie Xue , Brian M. Kurkoski

Two-way real-time video communication in wireless networks requires high bandwidth, low delay and error resiliency. This paper addresses these demands by proposing a system with the integration of Network Coding (NC), user cooperation using…

信息论 · 计算机科学 2012-05-16 Xiaozhong Xu , Ozgu Alay , Elza Erkip , Yao Wang , Shivendra Panwar

An ultra-high throughput low-density parity check (LDPC) decoder with an unrolled full-parallel architecture is proposed, which achieves the highest decoding throughput compared to previously reported LDPC decoders in the literature. The…

As a medium for cold data storage, DNA stands out as it promises significant gains in storage capacity and lifetime. However, it comes with its own data processing challenges to overcome. Constrained codes over the DNA alphabet…

信息论 · 计算机科学 2025-10-08 Canberk İrimağzı , Ahmed Hareedy

LoRa is one of the promising techniques for enabling Low Power Wide Area Networks (LPWANs) for future Internet-of-Things (IoT) devices. Although LoRa allows flexible adaptations of coverage and data rates, it is subject to intrinsic types…

网络与互联网体系结构 · 计算机科学 2018-03-20 Antoine Waret , Megumi Kaneko , Alexandre Guitton , Nancy El Rachkidy

We propose a hybrid protocol combining a rectangular error-correcting code - paired with an error-detecting code - and a backward error correction in order to send packages of information over a noisy channel. We depict a linear-time…

网络与互联网体系结构 · 计算机科学 2019-04-04 Binh-Minh Bui-Xuan , Pierre Meyer , Antoine Roux

Accurate channel estimation is essential for achieving the performance gains offered by reconfigurable intelligent surface (RIS)-aided wireless communications. A variety of channel estimation methods have been proposed for such systems;…

信号处理 · 电气工程与系统科学 2022-01-25 Sumin Jeong , Arman Farhang , Nemanja Stefan Perović , Mark Flanagan

Parameter-efficient fine-tuning methods, such as LoRA, reduces the number of trainable parameters. However, they often suffer from scalability issues and differences between their learning pattern and full fine-tuning. To overcome these…

机器学习 · 计算机科学 2025-01-22 Hamid Nasiri , Peter Garraghan

Network Coding (NC) is a compelling solution for increasing network efficiency. However, it discards corrupted packets and cannot achieve optimal performance in noisy communications. Since most of the information in corrupted packets is…

信息论 · 计算机科学 2026-03-12 Hosein K. Nazari , Stefan Senk , Peyman Pahlevani , Juan A. Cabrera , Frank H. P. Fitzek

Erasure coding is widely used for massive storage in data centers to achieve high fault tolerance and low storage redundancy. Since the cross-rack communication cost is often high, it is critical to design erasure codes that minimize the…

信息论 · 计算机科学 2019-02-26 Hanxu Hou , Patrick P. C. Lee , Kenneth W. Shum , Yuchong Hu

Tensor data often suffer from missing value problem due to the complex high-dimensional structure while acquiring them. To complete the missing information, lots of Low-Rank Tensor Completion (LRTC) methods have been proposed, most of which…

计算机视觉与模式识别 · 计算机科学 2021-05-07 Zhebin Wu , Tianchi Liao , Chuan Chen , Cong Liu , Zibin Zheng , Xiongjun Zhang

Long-Range Frequency Hopping Spread Spectrum (LR-FHSS) is a recent modulation designed for communications from low-power ground end-devices to Low-Earth Orbit (LEO) satellites. To decode a frame, an LR-FHSS gateway must receive at least one…

网络与互联网体系结构 · 计算机科学 2023-06-16 Juan A. Fraire , Alexandre Guitton , Oana Iova