Wireless communication

For secure communications, the authors propose a underwater wireless optical communications code-division multiple-access (UOWC/CDMA) system with multiple relay assistance. Relay nodes employ the Chip Detect-and-Forward (CDF) technique to prevent the difficult multiuser decoding procedure. The proposed system performance, in terms of bit-error rate (BER) and transmission confidentiality, is analyzed in our study over fading channel.

11p vithomson 02-07-2024 0 0   Download

Radio over Fiber (RoF) stands as a cuttingedge technology poised to revolutionize emerging wireless networks, especially in the context of fifth-generation Cloud-Radio Access Networks (C-RAN). Concurrently, with the pervasive integration of deep learning across diverse domains such as communication and data processing, this investigation delves into the nonlinear effects observed in a fronthaul interface.

6p vithomson 02-07-2024 0 0   Download

In this article, the authors introduce the "Cooperative WBANs" model, wherein sensors communicate directly with Access Points (APs) without a coordinator. They also present a power control algorithm for downlink data transmission from APs to sensors.

9p visergeyne 18-06-2024 0 0   Download

In this paper, we show that there is a certain interval of input intensity, in which the transmission coefficients overlap one to other. This behaviors of SNC can be used to generate random signals. Using the expression described the output-input power relation, the expression of the optical merge signal, carrier signal and coded-carrier signal, the overlapping region of the input intensity is numerically observed.

9p viambani 18-06-2024 4 1   Download

Part 1 book "Wireless communications - Principles and practice" includes content: Introduction to wireless communication systems, the cellular concept sytem design fundamentals, mobile adio propagation large scale path loss, mobile radio propagation small-scale fading and multipath, modulation tecniques for mobile radio.

298p dianmotminh01 14-05-2024 1 0   Download

Part 2 book "Wireless communications - Principles and practice" includes content: Equalization, diverstity and channel coding; speech coding, multiple access techniques for wireless communications, wireless networking, wireless systems and standards.

342p dianmotminh01 14-05-2024 4 0   Download

This book presents a thorough overview of 3G networks and standards and discusses interworking and hand over mechanisms between WLANs and the Universal Mobile Telecommunication System (UMTS). This book is a new, forward-looking resource that explores the present and future trends of WLANs and wireless personal area networks (WPANs). This book also provides the discovery path that these infrastructures are following from a perspective of synergies with 3G systems and how they will pave the way for future 4G systems.

269p longtimenosee03 22-02-2024 3 2   Download

This book contains comprehensive, straightforward summaries of the major concepts, issues, and approaches related to networking. Networking is defined broadly to encompass configurations ranging from a couple of connected computers just a few feet apart to a network of several thousand machines (of all types and sizes) scattered around the world. You’ll find discussions of networking as it’s done by servers and clients, managers and agents, peers, and even over the telephone.

1268p longtimenosee03 22-02-2024 5 3   Download

Ebook Personal networks: Wireless networking for personal devices includes content: Chapter 1 the vision of personal networks, chapter 2 personal networks user requirements, chapter 3 trends in personal networks, chapter 4 the personal network architecture, chapter 5 cluster formation and routing, chapter 6 inter-cluster tunneling and routing, chapter 7 foreign communication, chapter 8 personal network application support systems, chapter 9 personal network security, chapter 10 personal network federations, chapter 11 personal network prototypes, chapter 12 the future of personal networks.

230p longtimenosee03 22-02-2024 5 2   Download

The third generation (3G) of mobile networks introduces wide spectrum and high data rates as well as variety of circuit-switched and packet-based services. It provides IP connectivity besides the circuit switching. Future generation mobile systems are expected to include heterogeneous access technologies, such as wireless LAN and 3G, as well as end-to-end IP connectivity (i.e., an all-IP network). The diversity of traffic services and access technologies creates new possibilities for both operators and users. On the other hand, it raises new traffic and design issues.

385p longtimenosee03 22-02-2024 6 2   Download

Ebook Wireless technician’s handbook (Second edition) includes content: Chapter 1 reviewing the basics; chapter 2 cellular radio concepts; chapter 3 advanced mobile phone service; chapter 4 NA-TDMA; chapter 5 GSM; chapter 6 GPRS and EDGE; chapter 7 CDMA IS-95 and J-Std-008; chapter 8 CDMA2000; chapter 9 WCDMA; chapter 10 the basics of field test; chapter 11 testing AMPS; chapter 12 testing TDMA systems—GSM, NA-TDMA, GPRS, and EDGE; chapter 13 testing CDMA; chapter 14 WCDMA and beyond: testing overview.

312p longtimenosee03 22-02-2024 7 2   Download

This paper proposes a dual-band PIFA antenna operated at 28/38 GHz for 5G communication systems. The PIFA antenna consists of two dielectric layers and an air gap is inserted between these two layers. Both substrates, namely Roger RT dielectric, have a relative dielectric constant of 2.2 and a thickness of 0.127 mm.

9p vibego 02-02-2024 1 0   Download

Part 2 book "Principles of modern wireless communication systems - Theory and practice" includes content: Multiple input multiple output wireless communications; orthogonal frequency division multiplexing; wireless system planning.

132p muasambanhan06 03-02-2024 7 3   Download

Part 1 book "Principles of modern wireless communication systems - Theory and practice" includes content: Introduction to 3G/4G wireless communications; introduction - basics of digital communication systems principles of wireless communications; the wireless channel; code division for multiple access (CDMA)

180p muasambanhan06 03-02-2024 9 2   Download

Part 2 book "Principles of electronic communication systems" includes content: Fundamentals of networking, local area networks, and ethernet; transmission lines; antennas and wave propagation; internet technologies; microwave and millimeter wave communication; satellite communication; telecommunication systems; optical communication; cell phone technologies; wireless technologies; communication tests and measurements.

497p muasambanhan06 03-02-2024 7 2   Download

Part 2 book "Principles of electronic communication systems" includes content: Digital data transmission; fundamentals of networking, local area networks, and ethernet; transmission lines; antennas and wave propagation; internet technologies; microwave and millimeter wave communication; satellite communication; telecommunication systems; optical communication; cell phone technologies; wireless technologies; communication tests and measurements.

557p muasambanhan06 03-02-2024 2 1   Download

Part 2 ebook "Industrial process automation systems - Design and implementation" includes content: Serial communications, industrial networks, hart communication, profibus communication, foundation fieldbus communication, wireless communication, opc communications, asset management systems, calibration management systems, advanced process control systems,... and other contents.

343p muasambanhan05 16-01-2024 1 0   Download

Ebook WAP, Bluetooth, and 3G programming: Cracking the code – Part 2 includes contents: Chapter 10 An overview of 3G; chapter 11 Advanced 3G programming; chapter 12 3G programming using BREW; chapter 13 voice and video communication over IP and Mobile IP Networks; chapter 14 the future of wireless networks; appendix a what ’s on the CD-ROM; appendix b tomcat installation and configuration; appendix c SQL server 2000 installation and XML support configuration; appendix d bluetooth reference and resources; appendix e 3G reference and resources.

211p haojiubujain010 14-12-2023 7 3   Download

This paper presents a proposed CP system for pipelines, utilizing an intelligent IoT system. The sensor nodes of the system designed based on the STM32 microcontroller perform the measurement of voltages from the reference electrodes, process the signal as well as perform wireless communication about the control stations via LoRa (Long Range Radio) communication.

9p vijeff 30-11-2023 5 3   Download

In this paper, a typical representation of the nature-inspired evolved antenna is investigated and developed. The Black Hole (BH), a space-operated phenomenon, is used as an evolutionary algorithm to optimize the antenna structure.

8p vijeff 30-11-2023 5 3   Download