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Over-the-air measurement for MIMO systems
Over-the-air (OTA) testing is an industry standard practice for evaluating transceiver performance in wireless devices. For the fifth generation (5G)...
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Spatial fading channel emulation for over-the-air testing of millimeter-wave radios: concepts and experimental validations
Millimeter-wave (mmWave) communication is regarded as the key enabling component for fifth-generation (5G) cellular systems due to the large...
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OFDMA Based UAVs Communication for Ensuring QoS
Unmanned aerial vehicles (UAV), more often familiar as drone, has been widely used both in civilian activities and military missions. UAV ad-hoc...
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Two-layer Lagrange-based relay network topology and trajectory design for solar system explorations
Exploration targeting outer planets and even the edge of the solar system is an emerging direction for the deep-space exploration in the next...
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Key issues and algorithms of multiple-input-multiple-output over-the-air testing in the multi-probe anechoic chamber setup
Multiple-input-multiple-output (MIMO) over-the-air (OTA) testing plays a key role in the research and development of wireless devices. MIMO OTA...
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IoT Security Vulnerabilities and Defensive Measures in Industry 4.0
The Internet of things (IoT) has been emerging technology for the past decade. IoT can be defined as the network connecting objects to the Internet...
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What Is the State of Smart Glass Research from an OSH Viewpoint? A Literature Review
Data glasses can enable more efficient, mobile and flexible work processes, but at the same time new hazards can arise for employees. A number of...
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Energy balanced data gathering approaches in wireless sensor networks using mixed-hop communication
Wireless sensor networks (WSN) consists of small battery powered nodes. Energy efficiency and energy balancing are the most stringent needs of WSN...
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Performance analysis for contention adaptation of M2M devices with directional antennas
In the directional carrier sense multiple access-collision avoidance ( directional -CSMA-CA) mechanism, the efficient channel access mechanism with a...
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Theoretical Aspects of Wireless LAN Performance
In the beginning of this chapter, a survey is given about existing literature concerning the performance ofWireless LAN and the enhancement by...
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Trusted Mobile Platforms
This article addresses two main topics. Firstly, we review the operation of trusted computing technology, which now appears likely to be implemented...
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Simulation of Wireless Networks
Simulation of wireless networks is important at all stages of their life including the design, operational, and testing stages. Simulation is used to...
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Origins of the Z4 — News from the United States — Attempt at a Ph.D. dissertation — Computing machine for logic operations — Final months of the war in Berlin — The evacuation — Z4 completed in Göttingen — Final war days in the Allgäu
In 1942 we started building the Z4, a further development of the Z3. The Z4, too, was still completely geared toward electromechanics, corresponding...
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