scholarly journals Design and Study of Cognitive Network Physical Layer Simulation Platform

2014 ◽  
Vol 2014 ◽  
pp. 1-13
Author(s):  
Yongli An ◽  
Dong Wang ◽  
Yang Xiao
Keyword(s):  
Cognitive Radio ◽  
Data Transmission ◽  
High Performance ◽  
Physical Layer ◽  
Wireless Transmission ◽  
Wireless Data ◽  
Wireless Data Transmission ◽  
Radio Technology ◽  
Simulation Results ◽  
Cognitive Radio Technology

Cognitive radio technology has received wide attention for its ability to sense and use idle frequency. IEEE 802.22 WRAN, the first to follow the standard in cognitive radio technology, is featured by spectrum sensing and wireless data transmission. As far as wireless transmission is concerned, the availability and implementation of a mature and robust physical layer algorithm are essential to high performance. For the physical layer of WRAN using OFDMA technology, this paper proposes a synchronization algorithm and at the same time provides a public platform for the improvement and verification of that new algorithm. The simulation results show that the performance of the platform is highly close to the theoretical value.

scholarly journals Cognitive Radio Technology Based Spectrum Allocation for D2d-U Communication

2019 ◽  
Vol 9 (1S3) ◽  
pp. 520-522
Keyword(s):  
Cognitive Radio ◽  
Data Transmission ◽  
Heterogeneous Network ◽  
Geographical Area ◽  
Radio Technology ◽  
Sum Rate ◽  
Simulation Results ◽  
Cognitive Radio Technology ◽  
Scheduling Technique ◽  
Unlicensed Band

In this paper, a heterogeneous network consists of Device to Device (D2D) communication users and Cognitive Radio (CR) network users are considered. D2D users can communicate through licensed band or unlicensed band. Unlicensed band accessing D2D users are called as D2D-U users. CR users are using the unlicensed band for data transmission and they have the capability to access the licensed band when it is not in use. This proposed system is considering D2D-U users and Wi-Fi users in a local geographical area and applying scheduling technique for both to access the licensed band without affecting the licensed user’s transmission. The proposed system evaluated the data sum rate against number of user. The simulation results are generated and discussed

Cross-Layer Routing Protocol Based on AODV in Cognitive Radio

2013 ◽  
Vol 443 ◽  
pp. 388-391
Author(s):  
Yi Xian Chen
Keyword(s):  
Cognitive Radio ◽  
Routing Protocol ◽  
Data Transmission ◽  
Rapid Development ◽  
Cross Layer ◽  
Radio Network ◽  
Depth Analysis ◽  
Radio Technology ◽  
Cognitive Radio Technology ◽  
Aodv Routing Protocol

With the rapid development of science and technology, the current spectrum resources cannot simply cope with the high-load wireless networks cross-layer transmission. This thesis is based on the in-depth analysis of cognitive radio technology to understand the routing protocol in wireless cross-layer data transmission, and then discuss the relevant characteristics of the AODV routing protocol, and base on the AODV, the routing protocol uses in the analysis of the radio network organization based on the proposed to the possibility of cross-layer cognitive radio.

Application and Research of Routing Protocol Based on AODV in Cognitive Radio

2013 ◽  
Vol 336-338 ◽  
pp. 1776-1780 ◽  
Author(s):  
Yi Xian Chen
Keyword(s):  
Cognitive Radio ◽  
Routing Protocol ◽  
Data Transmission ◽  
Rapid Development ◽  
Radio Spectrum ◽  
Cross Layer ◽  
Spectral Integration ◽  
Depth Analysis ◽  
Radio Technology ◽  
Cognitive Radio Technology

With the rapid development of science and technology, the current spectrum resources can not simply cope with the high-load wireless networks transmission. In addition, because the use of spectrum resources can not be fully maximize the overload load phenomenon, which leads to the waste of resources and loss of the spectrum, the existing overall spectrum resources are not adequate utilization and its utilization can not be improved. Obviously, in order to meet the growing demand for Internet and wireless communications, we must address the low rate of utilization of spectrum resources To this end, it is proposed to use the spectrum resources in cognitive radio drainage techniques, cognitive radio node to perceive the change of radio spectrum resources, and thus connected in the most appropriate timing and spectral integration, the effect of radio data transmission, and adequately addressed the problem of the spectrum resource low utilization. This thesis is based on the in-depth analysis of cognitive radio technology to understand the routing protocol in wireless cross-layer data transmission, and then discuss the relevant characteristics of the AODV routing protocol, and base on the AODV, the routing protocol uses in the analysis of the radio network organization based on the proposed to the possibility of cognitive radio.

PC Transceiver Programming in GPRS Wireless Transmission Module

2014 ◽  
Vol 945-949 ◽  
pp. 2217-2220
Author(s):  
Xing Hong Kuang ◽  
Zhe Yi Yao ◽  
Zhi Yu Wang ◽  
Jia Min Zhou ◽  
Jing Li ◽  
...  
Keyword(s):  
Data Transmission ◽  
Loss Rate ◽  
Visual Basic ◽  
Wireless Transmission ◽  
Third Party ◽  
Data Loss ◽  
Wireless Data ◽  
Server Side ◽  
Wireless Data Transmission

Based on UDP protocol in Visual Basic Winsock control, this paper designed third-party software to send and receive data. Wireless data transmission module used CM3160EP module. In order to decrease wireless data loss rate, four kinds of packets format is designed. The results show the stable data transmission and verify the send-receive and display of hexadecimal data on server-side.

scholarly journals Multi-Channel Digital Oscilloscope Implementation over Android Device

2019 ◽  
Vol 12 (2) ◽  
pp. 58
Author(s):  
Chongyi Yang ◽  
Chanpin Chen ◽  
Zhenhao Wu ◽  
Jiashun Jiang ◽  
Sicheng Su ◽  
...  
Keyword(s):  
Data Transmission ◽  
State Of The Art ◽  
Wireless Transmission ◽  
Waveform Analysis ◽  
Android Application ◽  
Digital Signals ◽  
Wireless Data ◽  
Digital Oscilloscope ◽  
Wireless Data Transmission ◽  
Electronic Measurement

Signal monitoring and waveform analysis play a significant role in state-of-the-art signal processing and electronic measurement. Traditional oscilloscopes tend to be heavy and huge, which makes it impossible for outdoor signal measurement. In addition, most of those oscilloscopes can measure merely two signals simultaneously. This article proposes the design of multi-channel digital oscilloscope over common Android mobile device. In our system we use STM32 development board to implement up to eight input channels, data processing and wireless transmission. In addition, an Android application is designed for Wi-Fi data reception, respective waveform demonstration and derivation of each signal’s amplitude and frequency. In order to transmit up to eight digital signals simultaneously as fast as possible, we designed an algorithm where all signals’ data can be transmitted within a surprisingly small amount of wireless data. In our system test, wireless data transmission is implemented and each waveform can be recovered and demonstrated basically.

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