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Wireless Underground Channel Diversity Reception With Multiple Antennas for Internet of Underground Things

Wireless Underground Channel Diversity Reception With Multip...

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IEEE international conference on communications (ICC) / Wireless communications Symposium / 3rd workshop on Optical Wireless communications (OWC)

作者： Salam, Abdul Vuran, Mehmet C. Univ Nebraska Dept Comp Sci & Engn Cyber Phys Networking Lab Lincoln NE 68588 USA

ISBN: (纸本)9781467389990

Internet of underground things (IOUT) is an emerging paradigm which consists of sensors and communication devices, partly or completely buried underground for real-time soil sensing and monitoring. In this paper, the performance of different modulation schemes in IOUT communications is studied through simulations and experiments. The spatial modularity of direct, lateral, and reflected components of the UG channel is exploited by using multiple antennas. First, it has been shown that bit error rates of 10(-3) can be achieved with normalized delay spreads (tau(d)) lower than 0.05. Evaluations are conducted through the first software-defined radio-based field experiments for UG channel. Moreover, equalization has a significant impact on the performance improvement of an IOUT system. An 8-Tap DFE (decision-feedback equalizer) adaptive equalizer achieves better performance. It is also found that DBPSK, and DPSK are more suitable for digital communications in the UG channel without adaptive equalization. Then, two novel UG receiver designs, namely, 3W-Rake and Lateral-Direct-Reflected (LDR) are developed and analyzed for performance improvement. It has been shown that with a three antenna LDR design, BER of lower than 10(-5) can be achieved. The BER of these two approaches are compared and the LDR has been shown to perform better.

关键词： Wireless communication Delays Receiving antennas Soil Signal to noise ratio Bit error rate

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Quality of service investigation for multimedia transmission over UWB networks

Quality of service investigation for multimedia transmission...

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international conference on communication systems software and middleware (COMSWARE)

作者： N. El-Fishawy M. Shokair W. Saad Faculty of Electronic Engineering Communication Department El Menoufia University Egypt

In this paper, the Quality of Service (QoS) for multimedia traffic of the Medium Access Control (MAC) protocol for Ultra Wide-Band (UWB) networks is investigated. A protocol is proposed to enhance the network performance and increase its capacity. This enhancement comes from using Wise Algorithm for Link Admission Control (WALAC). The QoS of multimedia transmission is determined in terms of average delay, loss probability, utilization, and the network capacity.

关键词： Quality of service Resource management Traffic control Signal to noise ratio Media Access Protocol Personal area networks Interference communication system traffic control Access protocols Ultra wideband technology

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Roaming between GSM/UMTS and IMS networks

Roaming between GSM/UMTS and IMS networks

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international conference on communication systems software and middleware (COMSWARE)

作者： Vikas Bajaj System Engineering and Emerging Technologies Aricent Bangalore India

Operators around the world are planning deployment of IMS Networks. It is therefore expected that GSM, UMTS and IMS Networks will co-exist for several years before full transition to IMS networks happens. There is a need therefore to support roaming of users from the legacy GSM/UMTS to IMS networks if the user device hosts IMS client software. This paper analyzes the problem and identifies the need for a VLR functional entity in the IMS network. It evaluates architectural alternatives for VLR placement and recommends use of one alternative. Finally, it captures the call flows for Registration, Call origination and Call termination to validate the recommended architectural alternative.

关键词： GSM 3G mobile communication Roaming Home automation Multimedia systems Authentication systems engineering and theory Solids Next generation networking Multiaccess communication

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An adaptive CAC algorithm based on fair utility for low earth orbit satellite networks

An adaptive CAC algorithm based on fair utility for low eart...

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international conference on communication systems software and middleware (COMSWARE)

作者： Zhen-Yu Na Zhen-Yong Wang Qing Guo Harbin Institute of Technology Harbin China

A novel adaptive call admission control algorithm for multimedia low orbit satellite networks was proposed. Based on real-time call dropping probability of destination cell, the algorithm is able to reserve bandwidth for handoff calls combining probability threshold method and fair utility allocation scheme. Simulation results show that the proposed algorithm presents satisfactory new call blocking probability and greatly reduces handoff call dropping probability, while guarantees the high bandwidth utilization.

关键词： Low earth orbit satellites Bandwidth Quality of service communication system traffic control Programmable control Adaptive control Call admission control Admission control Traffic control Investments

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Proceedings of the 2020 8th international conference on communications and Broadband Networking, ICCBN 2020

Proceedings of the 2020 8th International Conference on Comm...

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8th international conference on communications and Broadband Networking, ICCBN 2020 and its workshop on 2020 3rd international conference on communication Engineering and Technology, ICCET 2020

ISBN: (纸本)9781450375047

The proceedings contain 16 papers. The topics discussed include: fatigue assessment of bicep Brachii muscle using surface emg signals obtained from isometric contraction;the survey of software display technology for general radar terminal;cryptographic randomness test of the modified hashing function of SHA256 to address length extension attack;a fusion spectrum sensing algorithm using energy and eigenvalues;joint power and bandwidth allocation method based on immune genetic algorithm for inter-satellite links in Beidou navigation satellite system;an quick available-bandwidth measurement method based on link delay growth rate;lightweight super-resolution learning model for extremely exposed images;quasi analysis of rainfall prediction during floods using machine learning;and study on a navigation system for visually impaired persons based on egocentric vision using deep learning.

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Stability analysis for communication of voice terminals with packet reservation multiple access protocol with high propagation delays

Stability analysis for communication of voice terminals with...

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international conference on communication systems software and middleware (COMSWARE)

作者： Amirali Sharifi Eyad H. Abed Department of Electrical and Computer Engineeringand the Institute for Systems Research University of Maryland College Park MD USA

This paper addresses the stability, bifurcation properties, and performance improvement of the packet reservation multiple access with hindering states (PRMA-HS) protocol, a medium access control scheme suitable for application in low earth orbit mobile satellite systems. The bistable behavior and bifurcation properties of the PRMA-HS protocol for a traffic with voice sources is investigated. A price based bifurcation control scheme is proposed to increase the capacity of the PRMA-HS protocol, defined as the number of simultaneous users sharing the same communication medium. Finally, a brief discussion concerning the extension of the proposed bifurcation control to PRMA-HS protocol over a random packet error channel is also provided.

关键词： Stability analysis Access protocols Propagation delay Bifurcation Mobile communication Low earth orbit satellites communication system control Media Access Protocol communication system traffic control Error correction

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communication in personal healthcare

Communication in personal healthcare

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international conference on communication systems software and middleware (COMSWARE)

作者： Praveen Kumar Thumparthy Viswanatha Rao Corporate Research & Development Sasken Communication Technologies Limited Bangalore India

Wireless Sensor Networks (WSN) are planned to be deployed in critical applications like border surveillance, monitoring physical and chemical environmental phenomena, intelligent agriculture and personal healthcare. Theses days, researcherspsila vision is to implant sensor nodes in the human body, which will monitor the biological parameters and report them to the patient and the doctor, when abnormalities are detected. However, due to the criticality of these applications a thorough evaluation of the existing standards and technologies for suitability is needed. This paper evaluates the existing technologies and standards designed for sensor networks from the perspective of a personal healthcare system. The main focus of this paper is to evaluate the power efficiency of the node and the channel reuse factor in different conditions. Proposals are also made towards improving the weaknesses.

关键词： Medical services Wireless sensor networks Patient monitoring Intelligent sensors Biosensors Surveillance Chemical sensors Intelligent networks Agriculture Implants

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Frequency Injection Interfacing: A Novel Method for Delivering External Information to an OFDM Receiver Physical Layer

Frequency Injection Interfacing: A Novel Method for Deliveri...

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IEEE international conference on communications (ICC) / Wireless communications Symposium / 3rd workshop on Optical Wireless communications (OWC)

作者： Kihei, Billy Copeland, John. A. Chang, Yusun Georgia Inst Technol Atlanta GA 30332 USA Kennesaw State Univ Marietta GA USA

ISBN: (纸本)9781467389990

This work presents a novel method we call: Frequency Injection Interfacing (FII), for OFDM communication systems. With FII, an external system or observer can communicate to an OFDM receiver through a frequency encoder that injects additional frequency content into the received signal. Specifically, the null subcarriers at the edges of the OFDM waveform are turned on or off to represent a binary code word which references a lookup table. OFDM transmitters do not broadcast wireless energy in the OFDM sidebands in order to comply with regulatory policies. To avoid violating transmission laws, FII uses a direct connection between the frequency encoder and OFDM receiver. Because FII can deliver a unique code word per packet in real time, FII could potentially allow new applications and optimizations for OFDM systems, without requiring a separate application program interface. The FII method is validated through experimentation using software defined radios, a GNU Radio IEEE 802.11 receiver, and a COTS vehicle-to-vehicle radio. A packet reception rate above 95% proves FII operates transparently within existing OFDM architectures, furthermore the non-optimized implementation of FII presented in this work reveals that FII could reliably deliver up to 2047 code words with 67% success and zero false alarms.

关键词： OFDM null subcarriers system integration

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Interpretation of policy oriented common criteria components for network computing environment

Interpretation of policy oriented common criteria components...

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international conference on communication systems software and middleware (COMSWARE)

作者： Manpreet Singh Manjeet Singh Patterh UCOE Punjabi University India

The aim of the paper is to design a reliable policy oriented security functional framework for network computing environment. Generally it is difficult to define reliable security policy components that should be applied to validate secure network computing environment. Therefore, we have decided to prepare the interpretation of security functional requirements that are defined in the ISO/IEC 15408 common criteria. In the verification process, the derived policy components are related to the specific security objectives of the network communication environment. The evidences listed in the case study supports the claims that the proposed network security policy interpretation framework is a complete and cohesive set of requirements.

关键词： Computer networks Computer security Information security communication system security Access control Context modeling Standards development Protection ISO standards IEC standards

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MIMO in wireless WAN — the UMB system

MIMO in wireless WAN — the UMB system

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international conference on communication systems software and middleware (COMSWARE)

作者： Sandip Sarkar Tamer Kadous Tingfang Ji Naga Bhushan Alex Gorokhov Aamod Khandekar Rajiv Vijayan Avneesh Agrawal QUALCOMM Inc.orporated San Diego CA USA

Theoretically, MIMO offers significant capacity benefits, but realizing these gains in deployed wireless systems remains a very challenging problem. MIMO has been used in wireless LAN systems with great success. However, due to the hugely varying spatial profiles and velocity patterns of the access terminals, integrating MIMO techniques in a wireless WAN system has been a difficult design problem. This paper introduces the design paradigms of ultra-mobile broadband, which is poised to become the successor of EVDO as the next generation of high speed wireless system. UMB allows the use of MIMO in various forms to suit the deployment scenario, and elicit as much gain as possible.

关键词： MIMO Wide area networks Delay Wireless LAN Interference Bandwidth Power control Multiaccess communication OFDM Frequency conversion

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