scholarly journals A FPGA implementation of GMM MUD algorithm for space formation aircraft communication system

2020 ◽  
Vol 309 ◽  
pp. 01004
Author(s):  
Bo Ma ◽  
Mingdong Xu ◽  
Zhilu Wu
Keyword(s):  
Communication System ◽  
Data Transfer ◽  
Transmission Rate ◽  
Gaussian Mixture ◽  
Detection Algorithm ◽  
Fpga Implementation ◽  
Ultra Wideband ◽  
Direct Sequence ◽  
High Data ◽  
Field Programmable

Space formation aircraft communication system needs to meet strong anti-interference ability, low power consumption and high transmission rate performance. Ultra-wideband (UWB) has high data transfer rate, low device complexity, high interference resistance and confidentiality. Therefore, UWB technology is used in space formation aircraft communication system, which is direct sequence ultra-wideband (DS-UWB) space formation aircraft communication system. This paper, we put forward a multi-user detection (MUD) algorithm based on Gaussian Mixture Model (GMM) in DS-UWB communication system and its field-programmable gate array (FPGA) implementation. We adopt a way which based on MATLAB and FPGA platform, and results show that MUD algorithm based on GMM has better bit error rate (BER) performance compared to classical multi-user detection algorithm.

Modulation and Demodulation Techniques in Indoor Visible Light Communication System

2014 ◽  
Vol 685 ◽  
pp. 306-309
Author(s):  
Hao Wang ◽  
Ze Yu Han
Keyword(s):  
Visible Light ◽  
Communication Technology ◽  
Communication System ◽  
High Speed ◽  
Data Transfer ◽  
Visible Light Communication ◽  
Communication Link ◽  
High Data ◽  
Modulation And Demodulation ◽  
The Impact

Visible light communication technology is a emerging wireless and optical communication technology developed after invention and application of white LED.In this paper, we have a research based on indoor visible light communication system of lighting white LED,discuss of the visible light communication channel characteristics,detailedly analysis of the indoor visible light communication link. This paper focuses on the modulation and demodulation method applied to visible light communication. In the past visible light communication is mainly used off keying modulation,however, the data transfer speed is limited due to the influence of ISI .This paper presents a solution based on OFDM modulation and demodulation, to reduce the impact brought from inter-symbol string under high data transfer speed.Based on data analysis and computer simulation,the program presented in this paper can be used as indoor lighting and high-speed data transmission.Finally, give scheme to achieve visible light communication modulation and demodulation,provide a theoretical basis for further experiments.

scholarly journals Efficient FPGA Implementation of Automatic Nuclei Detection in Histopathology Images

2019 ◽  
Vol 5 (1) ◽  
pp. 21 ◽  
Author(s):  
Haonan Zhou ◽  
Raju Machupalli ◽  
Mrinal Mandal
Keyword(s):  
Processing Time ◽  
Detection Algorithm ◽  
Fpga Implementation ◽  
Detection Accuracy ◽  
Cell Nuclei ◽  
Nuclei Detection ◽  
Efficient Detection ◽  
Field Programmable ◽  
Histopathology Images ◽  
Aided Diagnosis

Accurate and efficient detection of cell nuclei is an important step towards the development of a pathology-based Computer Aided Diagnosis. Generally, high-resolution histopathology images are very large, in the order of billion pixels, therefore nuclei detection is a highly compute intensive task, and software implementation requires a significant amount of processing time. To assist the doctors in real time, special hardware accelerators, which can reduce the processing time, are required. In this paper, we propose a Field Programmable Gate Array (FPGA) implementation of automated nuclei detection algorithm using generalized Laplacian of Gaussian filters. The experimental results show that the implemented architecture has the potential to provide a significant improvement in processing time without losing detection accuracy.

scholarly journals Very High Bit Rate Near-Field Communication with Low-Interference Coils and Digital Single-Bit Sampling Transceivers for Biomedical Sensor Systems

Sensors ◽  
2020 ◽  
Vol 20 (21) ◽  
pp. 6025
Author(s):  
Sebastian Stoecklin ◽  
Elias Rosch ◽  
Adnan Yousaf ◽  
Leonhard Reindl
Keyword(s):  
Low Power ◽  
Data Transfer ◽  
Near Field ◽  
Cmos Technology ◽  
Near Field Communication ◽  
Sensor Systems ◽  
Analog To Digital ◽  
High Data ◽  
Biomedical Sensor ◽  
Field Programmable

The evolution of microelectronics increased the information acquired by today’s biomedical sensor systems to an extent where the capacity of low-power communication interfaces becomes one of the central bottlenecks. Hence, this paper mathematically analyzes and experimentally verifies novel coil and transceiver topologies for near-field communication interfaces, which simultaneously allow for high data transfer rates, low power consumption, and reduced interference to nearby wireless power transfer interfaces. Data coil design is focused on presenting two particular topologies which provide sufficient coupling between a reader and a wireless sensor system, but do not couple to an energy coil situated on the same substrate, severely reducing interference between wireless data and energy transfer interfaces. A novel transceiver design combines the approaches of a minimalistic analog front-end with a fully digital single-bit sampling demodulator, in which rectangular binary signals are processed by simple digital circuits instead of sinusoidal signals being conditioned by complex analog mixers and subsequent multi-bit analog-to-digital converters. The concepts are implemented using an analog interface in discrete circuit technology and a commercial low-power field-programmable gate array, yielding a transceiver which supports data rates of up to 6.78 MBit/s with an energy consumption of just 646 pJ/bit in transmitting mode and of 364 pJ/bit in receiving mode at a bit error rate of 2×10−7, being 10 times more energy efficient than any commercial NFC interface and fully implementable without any custom CMOS technology.

PERFORMANCE ANALYSIS OF A NOVEL M-ARY CODE SELECTED DS-BPAM UWB COMMUNICATION SYSTEM

2006 ◽  
Vol 15 (03) ◽  
pp. 455-466 ◽  
Author(s):  
ZHIQUAN BAI ◽  
SHAOYI XU ◽  
WEIHUA ZHANG ◽  
KYUNGSUP KWAK
Keyword(s):  
Communication System ◽  
Signal To Noise Ratio ◽  
Pulse Amplitude ◽  
Ultra Wideband ◽  
Modulation Scheme ◽  
Direct Sequence ◽  
High Bit Rate ◽  
Modulation Level ◽  
Uwb Communication ◽  
Selection Of

A novel M-ary direct sequence ultra wideband (UWB) communication system based on the selection of the direct sequence code is studied in this paper. The proposed M-ary code selected direct sequence bipolar pulse amplitude modulation scheme can achieve high bit rate without increasing the system bandwidth or changing the pulse shape. With the increase of the modulation level M, the system bit error rate will be improved even at lower signal to noise ratio per bit. The exact bit error probability is derived over the AWGN channel and correlation receivers. Both Monte-Carlo simulation and the theoretical analysis prove the efficiency of this M-ary UWB system.

Design and Implementation of Long Distance Visible Light Communication System Based on Embedded ARM Platform

2013 ◽  
Vol 462-463 ◽  
pp. 643-646
Author(s):  
Meng Mi Zhou ◽  
Ming Lun Zhang ◽  
Yan Gan Zhang
Keyword(s):  
Optical Communication ◽  
Communication System ◽  
Data Transfer ◽  
Transmission Rate ◽  
Visible Light Communication ◽  
Optical Communication System ◽  
Long Distance ◽  
Design And Implementation ◽  
Interactive Interface ◽  
Drive Circuit

In this paper, a long-distance optical communication system based on Embedded ARM platform is presented and demonstrated. The system is composed of two parts: LED/PD application terminal and its drive circuit. Terminal has a 4-inch touch screen with interactive interface based on Android system. The performance of data transfer in our prototype shows up to 50 m range at the transmission rate of 50kbps. This system is supposed to reach the distance of 2km or higher in the coming months.

Matlab- Based Interference Mitigation in WPAN IR-UWB

2015 ◽  
Vol 3 (2) ◽  
pp. 1-14
Author(s):  
Abbas Saleh Hassan
Keyword(s):  
Short Range ◽  
Interference Mitigation ◽  
Impulse Radio ◽  
Ultra Wideband ◽  
Area Network ◽  
Wireless Technology ◽  
Technology System ◽  
Rake Receivers ◽  
High Data ◽  
Layer Solution

Impulse Radio - Ultra Wideband (IR-UWB) is a wireless technology system that offers a high data rate within a short range. Therefore, IR-UWB system is regarded as an excellent physical layer solution to the multi-piconet Wireless Personal Area Network (WPAN) applications. In spite of all the advantages of IR-UWB, there are several fundamental and practical challenges that need to be carefully addressed. The big and most important one among these challenges is the interference. Two types of Rake receivers are designed and simulated to highly mitigate the MUI these are (PRake receiver) and (SRake receiver).

Lightbeam Configuration Method and Interference Elimination Resource Scheduling for Indoor Multibeam VLC Networks

2019 ◽  
Vol 0 (0) ◽  
Author(s):  
Cong-Nam Tran ◽  
Nam-Hoang Nguyen ◽  
Trong-Minh Hoang
Keyword(s):  
Transmission Rate ◽  
Resource Scheduling ◽  
Packet Delay ◽  
Access Point ◽  
Visible Light Communications ◽  
Resource Allocation Algorithm ◽  
Downlink Transmission ◽  
High Data ◽  
Interference Elimination ◽  
Multi Access

AbstractVisible light communications (VLC) is considered as an alternative communications technology for providing indoor wireless services. VLC systems are expected to offer high data transmission rate and seamless coverage. In order to achieve these requirements, VLC systems utilizing multi-lightbeam access points (multibeam VLC-AP) for downlink transmission have been proposed recently. In this paper, we present a lightbeam configuration method and an interference elimination resource scheduling mechanism (IERS) for indoor multibeam multi-access point VLC systems. The proposed lightbeam configuration method ensures seamless connectivity between user equipment and VLC-AP. The proposed IERS mechanism consists of a beam assignment algorithm and a resource allocation algorithm for eliminating co-channel interference as well as improving system performance. Performance results obtained by computer simulation indicate that there are significant improvements in terms of downlink signal to interference plus noise ratio, user throughput and packet delay when the proposed IERS mechanism is deployed.

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