Results 21 to 30 of about 3,228,583 (292)

A Near-Capacity Differentially Encoded Non-Coherent Adaptive Multiple-Symbol-Detection Aided Three-Stage Coded Scheme [PDF]

open access: yes, 2010
This paper presents an Irregular Distributed Hybrid Concatenated Differential (Ir-DHCD) coding scheme contrived for the relay aided differential decode-and-forward (DDF) cooperative system using multiple-symbol differential sphere detection (MSDSD ...
Wang, Li   +7 more
core   +1 more source

Camera-Based Graphical Symbol Detection [PDF]

open access: yesNinth International Conference on Document Analysis and Recognition (ICDAR 2007) Vol 2, 2007
In this paper we present a method to locate and recognize graphical symbols appearing in real images. A vectorial signature is defined to describe graphical symbols. It is formulated in terms of accumulated length and angular information computed from polygonal approximation of contours.
Marçal Rusiñol   +2 more
openaire   +3 more sources

The Capacity of Successive DF Relaying and Using Soft Multiple-Symbol Differential Sphere Detection [PDF]

open access: yes, 2011
The conventional single-relay aided two-phase cooperative network employing a so-called soft-input soft-output multiple-symbol differential sphere detection (SISO-MSDSD) and operating in a distributed turbo decoding mode incurs a high complexity and ...
Li, Li   +5 more
core   +2 more sources

Multiple-Symbol Differential Detection for Unitary Space-Time-Frequency Coding [PDF]

open access: yes, 2010
In this paper, multiple-symbol differential detection (MSDD) is applied to the differential unitary space-time-frequency coding (DUSTFC) scheme over frequency selective fading multiple-input multiple-output (MIMO) channels.
Handa, Shiro   +3 more
core   +1 more source

Method for Symbol Detection in Substation Layout Diagrams Based on Text-Image MultimodalFusion [PDF]

open access: yesJisuanji kexue
To address the issues of inconvenient operation,low efficiency,and difficulty in managing recognition data during the manual identification of substation layout drawings,this paper proposes a morphology-based large-size drawing segmentation method and a ...
FAN Jiabin, WANG Baohui, CHEN Jixuan
doaj   +1 more source

Sphere-Packing Modulated Space-Time Coding Using Non-Binary LDPC-Coded Iterative-Detection

open access: yes, 2008
A recently proposed Space-Time Block Coding (STBC) signal construction method that combines orthogonal design with sphere packing, referred to here as (STBC-SP), has shown useful performance improvements over Alamouti’s conventional orthogonal design. In
Alamri, Osamah   +9 more
core   +2 more sources

Ambient backscatter communications technology for batteryless IoT

open access: yes物联网学报, 2019
As one of the core enabling technologies supporting the batteryless Internet of things(IoT),ambient backscattering communication technology has the characteristics of low power consumption and low cost.Firstly,the basic concept of ambient backscattering ...
Qin TAO, Caijun ZHONG, Zhaoyang ZHANG
doaj   +2 more sources

Deep Learning Model for CS-Based Signal Recovery for IRS-Assisted Near-Field THz MIMO System

open access: yesIEEE Open Journal of Vehicular Technology
Terahertz (THz) communication is a cutting-edge technology for the sixth-generation (6G) networks, offering vast bandwidths and data rates up to terabits per second, significantly advancing vehicular connectivity and services.
Vaishali Sharma   +5 more
doaj   +1 more source

Unified bit-based probabilistic data association aided MIMO detection for high-order QAM [PDF]

open access: yes, 2011
A unified Bit-based Probabilistic Data Association (B-PDA) detection approach is proposed for Multiple-Input Multiple-Output (MIMO) systems employing high-order Quadrature Amplitude Modulation (QAM).
Yang, Shaoshi   +5 more
core   +1 more source

Channel Estimation and Symbol Detection for UAV-RIS Assisted IoT Systems via Tensor Decomposition

open access: yesIEEE Access
Utilizing unmanned aerial vehicle (UAV) technology in communication holds promise for meeting the increasing data rate demands in future wireless systems due to its flexibility.
Meifeng Li   +3 more
doaj   +1 more source

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