The application of compression methods for RoIP data transmission efficiency in the HFC network

2017 ◽  
Author(s):  
Taeil Kim ◽  
Chulsun Park ◽  
Sungkwon Park
Keyword(s):  
Data Transmission ◽  
Transmission Efficiency

FSO-Based Analysis of LTE-A MAC Protocols to Achieve Improved QoS

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Prabhjot Kaur ◽  
Hardeep Singh Saini
Keyword(s):  
Data Transmission ◽  
Orthogonal Frequency Division Multiplexing ◽  
Optical Signal ◽  
Transmission Efficiency ◽  
Mac Protocols ◽  
Wireless Access Networks ◽  
Free Space Optical ◽  
Medium Access ◽  
Carrier Sense ◽  
Efficient Data

AbstractFiber wireless (Fi-Wi) communication network is the amalgamation of optical and wireless access networks, which provides better bandwidth for achieving efficient data transmission. Medium access control (MAC) protocols are used in the wireless network for controlling the data flow from the transmitter to the receiver end. The delay produced by these protocols tells about the system efficiency. This paper shows a Fi-Wi system in the long-term evaluation-advanced (LTE-A) environment, which incorporates the dependency of delay generated by the specific MAC protocols during the transmission process. This paper aimed to scrutinize the effects of Carrier Sense Multiplexing Access with Collision Detection (CSMA/CD), Carrier Sense Multiplexing Access with Collision Avoidance (CSMA/CA) and Slotted ALOHA on the performance of the Fi-Wi system. Free space optical (FSO) channel is incorporated to forward the data to user end. In such system, the optical signal is multiplexed using the Orthogonal Frequency Division Multiplexing (OFDM) technique and finally the data are fetched at the receiver end and different criterions such eye-height, Q-factor and bit error rate are evaluated. Simulation results are performed using MATLAB software. The comparative analysis is also performed in terms of data transmission efficiency, delay and throughput of MAC protocols. This shows the effective results of the proposed system according to the delay produced by MAC protocols.

Data Transmission Hardware Design of IPv6 Node for Internet of Things

2013 ◽  
Vol 336-338 ◽  
pp. 2494-2499 ◽  
Author(s):  
Rong Jun Chen ◽  
Kai Xie ◽  
Shun Dao Xie ◽  
Xiong Yong Zhu ◽  
Hong Zhou Tan
Keyword(s):  
Embedded System ◽  
Data Transmission ◽  
Video Stream ◽  
Transmission Efficiency ◽  
Resource Consumption ◽  
Transport Layer ◽  
Verilog Hdl ◽  
Data Link ◽  
Internet Protocols ◽  
Ipv6 Network

To reduce the resource consumption in traditional software IPv6 Internet protocols based on embedded system, a data transmission hardware scenario of reduced IPv6 protocol with optimized cache structures based on the FPGA is designed using Verilog HDL. This scenario implements the function of the Transport Layer and the Network Layer on FPGA and uses the function of the Data Link Layer and the Physical Layer on the DM9000A chip, which can perform stateless auto-configuration, address resolution, echo response and UDP transmission. To improve the transmission efficiency, a low-resource-consumption and self-managed cache structure is designed to manage the Neighbor Cache, the Prefix Table and the Default Router Table. In the IPv6 network test, the design can configure itself and its data rate exceeds 28Mbps, which can realize real-time video stream, audio stream and other data transmission in Network of Things applications in IPv6 network.

Improved AODV Routing Protocol Based on SNR

2014 ◽  
Vol 610 ◽  
pp. 910-914
Author(s):  
Bin Wang ◽  
Hao Meng ◽  
Shen Yong Li
Keyword(s):  
Routing Protocol ◽  
Data Transmission ◽  
Transmission Rate ◽  
Transmission Efficiency ◽  
Network Delay ◽  
Paper Briefly ◽  
Low Snr ◽  
Data Throughput ◽  
Simulation Results ◽  
Aodv Routing Protocol

This paper briefly analyses the routing establishing process of AODV and points out its imperfection, proposes the AODV routing establishing principle based on SNR. The Network delay and data throughput of the improved AODV have all been improved as simulation results proves. Finally the conclusion was given, illustrating that the improvement avoids the bad influence to the transmission rate of the whole link, which brings by low SNR node, and increases the data transmission efficiency.

scholarly journals Data Transmission Efficiency in Bluetooth Low Energy Versions

Sensors ◽  
2019 ◽  
Vol 19 (17) ◽  
pp. 3746 ◽  
Author(s):  
Patricio Bulić ◽  
Gašper Kojek ◽  
Anton Biasizzo
Keyword(s):  
Energy Consumption ◽  
Data Transmission ◽  
Power Efficiency ◽  
Transmission Efficiency ◽  
Low Energy ◽  
Battery Life ◽  
Design Guideline ◽  
Bluetooth Low Energy ◽  
Data Throughput ◽  
Data Volume

One important aspect when choosing a Bluetooth Low Energy (BLE) solution is to analyze its energy consumption for various connection parameters and desired throughput to build an optimal low-power Internet-of-Things (IoT) application and to extend the battery life. In this paper, energy consumption and data throughput for various BLE versions are studied. We have tested the effect of connection interval on the throughput and compared power efficiency relating to throughput for various BLE versions and different transactions. The presented results reveal that shorter connection intervals increase throughput for read/write transactions, but that is not the case for the notify and read/write without response transactions. Furthermore, for each BLE version, the energy consumption is mainly dependable on the data volume. The obtained results provide a design guideline for implementing an optimal BLE IoT application.

scholarly journals A Novel Coding Based Dimming Scheme with Constant Transmission Efficiency in VLC Systems

2019 ◽  
Vol 9 (4) ◽  
pp. 803 ◽  
Author(s):  
Yu Zuo ◽  
Jian Zhang
Keyword(s):  
Visible Light ◽  
Data Transmission ◽  
Visible Light Communication ◽  
Transmission Efficiency ◽  
Reliable Data ◽  
Error Performance ◽  
Block Coding ◽  
Dimming Control ◽  
Transmitted Signal ◽  
Simulation Results

Visible light communication (VLC) has attracted tremendous attention due to two functions: communication and illumination. Both reliable data transmission and lighting quality need to be considered when the transmitted signal is designed. To achieve the desired levels of illumination, dimming control is an essential technology applied in VLC systems. In this paper, we propose a block coding-based dimming scheme to construct the codeword set, where dimming control can be achieved by changing the ratio of two levels (ON and OFF) based on on-off keying (OOK) modulation. Simulation results show that the proposed scheme can maintain good error performance with constant transmission efficiency under various dimming levels.

scholarly journals Fog-Cloud Computing Traffic Model Affecting the Occurrence of Latency on the Ubiquitous Sensor Network

2021 ◽  
Author(s):  
Chonnikan Sangmek ◽  
Nathaphon Boonnam
Keyword(s):  
Cloud Computing ◽  
Data Transmission ◽  
Fog Computing ◽  
Transmission Efficiency ◽  
Traffic Model ◽  
Packet Size ◽  
Internet Connection ◽  
Ubiquitous Sensor Networks ◽  
Different Characteristics ◽  
Main Factor

Abstract The fog-cloud computing traffic model overviews working elements in forming fog-cloud computing with three main layers: Ubiquitous Sensor Networks, Fog Computing, and Cloud Computing. We present a possible method of data transmission that focuses on either measuring or manipulating or both in the system divided into 7 USNs and using latency measurement to demonstrate transmission efficiency. This paper considers the latency test into four prominent cases: internet connection, traffic model, number of devices, and packet by equipment used for testing consisting of microcontroller board, sensor, actuator, and uses fog node two types: pocket Wi-Fi and router. In the latency test, we found that the factor causing the higher latency in the system was the packet size. The main factor consists of the different characteristics of working, fog nodes, and the number of connected devices. Therefore, the packet has correlated directly with the latency depending on the size of the packet increases. The resulting latency is the main factor affecting the work of the system.

The DES Algorithm Based on DSP Technology

2013 ◽  
Vol 457-458 ◽  
pp. 765-769
Author(s):  
Hao Wang ◽  
Dian Ren Chen ◽  
Sha Sha
Keyword(s):  
Data Transmission ◽  
Data Encryption ◽  
Transmission Efficiency ◽  
Wireless Data ◽  
Technology Application ◽  
Wireless Data Transmission ◽  
Implementation Scheme ◽  
Data Transmission System ◽  
Algorithm Implementation ◽  
Dsp Technology

This paper designed a kind of DES algorithm implementation based on DSP technology, application of TI company C54x series general DSP implementation mechanisms, with the introduction of DSP, this paper proposes a new DES algorithm implementation approaches, and the implementation scheme is presented. The method is simple and practical, the hardware resources is relatively less, high transmission efficiency , suitable for low data rate data encryption of small wireless data transmission system, can be widely used in various kinds of terminal positioning and small digital wireless receiving system.

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