Results 21 to 30 of about 128,644 (293)

Coding and Detection Schemes for Ambient Backscatter Communication Systems

open access: yesIEEE Access, 2017
Ambient backscatter technology has attracted much attention recently, because it enables battery-free devices, such as tags or sensors, to communicate through wireless energy harvesting and radio backscattering. Existing studies about ambient backscatter
Yang Liu   +3 more
doaj   +1 more source

Comparative Analytical Study of SCMA Detection Methods for PA Nonlinearity Mitigation

open access: yesSensors, 2021
Non-orthogonal multiple access (NOMA) has emerged as a promising technology that allows for multiplexing several users over limited time-frequency resources.
Elie Sfeir   +3 more
doaj   +1 more source

Low error floor LT coding algorithm for unequal error protection

open access: yesTongxin xuebao, 2022
Objectives:Rateless LT code is designed to provide an ideal transport protocol for large-scale data distribution and reliable broadcasting.The rateless LT code has three excellent characteristics,namely link adaptation,the code rate can be switched ...
Xin SONG   +4 more
doaj   +2 more sources

Transmit Antenna Subset Selection in Spatial Modulation Relying on a Realistic Error-Infested Feedback Channel

open access: yesIEEE Access, 2018
In this paper, we study the performance of spatial modulation (SM) employing Euclidean distance-based antenna selection (EDAS) operating in a realistic error-infested feedback channel, which has hitherto only been studied under ideal feedback channel ...
Rakshith Rajashekar   +2 more
doaj   +1 more source

On the Effect of Imperfect Reference Signal Phase Recovery on Performance of PSK System Influenced by TWDP Fading

open access: yesEntropy, 2023
We examine the effects of imperfect phase estimation of a reference signal on the bit error rate and mutual information over a communication channel influenced by fading and thermal noise.
Goran T. Djordjevic   +4 more
doaj   +1 more source

Error Floors of LDPC Coded BICM

open access: yes2007 IEEE International Conference on Communications, 2007
In recent years performance prediction for communication systems utilizing iteratively decodable codes has been of considerable interest. There have been significant breakthroughs as far as the analysis of LDPC code ensembles is concerned but the more practical problem of predicting the FER/BER of a particular code has proved to be much more difficult.
Ramamoorthy, Aditya, Varnica, Nedeljko
openaire   +3 more sources

Error Floor Analysis of Quasi-Cyclic LDPC and Spatially Coupled-LDPC Codes and Construction of Codes with Low Error Floor

open access: yes, 2021
Forward error-correcting (FEC) codes play an important role in transmitting data with extremely high reliability through modern communication systems. In this thesis, we study the design and analysis of low-density parity-check (LDPC) codes in general ...
Naseri, Sima
core   +1 more source

UP-GDBF: A 19.3 Gbps Error Floor Free 4KB LDPC Decoder for NAND Flash Applications

open access: yesIEEE Open Journal of Circuits and Systems, 2022
An error floor phenomenon, decoding performance, and throughput are three major concerns for LDPC decoders in NAND Flash applications. With a penalty method and an active iteration mechanism, we present a Unified Penalty Gradient Descent Bit Flipping (UP-
Li-Wei Liu   +2 more
doaj   +1 more source

Error Floor Approximation for LDPC Codes in the AWGN Channel [PDF]

open access: yesIEEE Transactions on Information Theory, 2011
24 pages, 15 figures, submitted to IEEE Transactions on Information ...
Brian K. Butler, Paul H. Siegel
openaire   +2 more sources

Comparison of Single-Camera-Based Depth Estimation Technology for Digital Twin Model Synchronization of Underground Utility Tunnels

open access: yesApplied Sciences, 2023
Digital twin technology can be used for disaster safety management of underground utility tunnels, which are social infrastructures. To verify its efficiency in an underground utility tunnel, it must be implemented and monitored in the real world ...
Sangmi Park   +3 more
doaj   +1 more source

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