Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 16 of 16 for “"Radio transmission"”.
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Heterogeneous parallel multi-radio transmission system in wireless vehicular communication
… wireless net works with multiple independent Radio Access Technologies (RATs). A Multiple Interface Scheduling System (MISS) is proposed, based on a user perspective, where the vehicle has visibility of all the available RATs, with no modification to the fixed infrastructure, operator …
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M49-- Machine for the Living : a performance broadcast through an interfering FM radio transmission
… the built environment through an interfering radio transmission. The performance elucidates conceptual boundaries revealed in the breakdown of a system. The project investigates effects of the sub-visible ambiance that overlaps and engulfs structures of urban inhabitation. "What appears in the …
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A high speed wearable system for body coupled communication
… too high power for long-term implants, such as radio transmission, or pose health threats to the patient, such as connection ports piercing the skin. However, a novel method of transmitting and receiving electronic sensor data is emerging known as body coupled communication (BCC). This method of …
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Energy and Data Conversion Circuits for Low Power Sensory Systems
… allows a sensor to save energy by reducing the radio transmission bandwidth. This dissertation proposes a fractal-based photodiode fabricated on standard CMOS process as an energy harvesting device with increased efficiency. Experiments show that, the fractal based photodiodes are 6% more …
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An optical system for line-of-sight communication
… narrow angle infrared light emitting diodes for transmission, directed across a reasonable angular range that allows the system to transmit across a narrow beam to the receiver, avoiding the dangers of detection, jamming, and eavesdropping that traditional omnidirectional radio transmission …
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MapNexus : a framework to derive human intent from architectural space to enable context-aware information exchanges in a wireless intranet
… into a series of polygons reflecting the radio transmission range of each wireless access point (AP). By using these APs as spatial aggregation units in a relational database, logical assumptions about short-term behavioral patterns can be modelled; this paper describes a method to …
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The evolution of the wireless equipment value chain
… require enormous investments in land-based radio, transmission, and switching systems in order to provide the coverage and capacity to efficiently operate a regional or nationwide cellular phone network. This wireless equipment is manufactured by an oligopoly of Original Equipment …
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Optimal transmitter placement in wireless mesh networks
… provide digital services to client devices via radio transmission. We consider the challenges of quickly and optimally designing a wireless mesh network. We focus on maximizing client coverage area by choice of access point locations, subject to constraints on network service, quantity and …
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An exploratory study of the information availability and utilization by the rural women of Melmoth, KwaZulu-Natal
… as community leaders. Methods of information transmission should be overwhelmingly oral that includes greater use of radio transmission. Largely, the findings are consistent with similar studies conducted elsewhere in the developing countries. Conference presentation and publication in a …
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Web-Based Data Visualization with 3D Portrayals for Communications Applications
… JSON API. Research of Software Defined Radio (SDR) and Dynamic Spectrum Access (DSA) can be used to significantly improve the wireless QoS. CORNET3D provides a 3D view of the Virginia Tech CORNET SDR testbed with information on which nodes and radios are operational. The application can …
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Digitally Assisted Transmitter Enhancement Techniques for Millimeter Wave Radio Systems
… The data to be transmitted is modulated on radio frequency carrier signals for transmission where the bandwidth of the signal to be transmitted increases proportional to the speed at which the data is intended to be transmitted. The present generation cellular wireless communication systems …
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Strong metadata privacy for mobile devices and applications
… that cryptographic operations are cheap while radio transmission can be costly. In particular, popular solutions such as VPN and Tor are practical with negligible impact on the battery life. However, more secure designs using cover traffic are impractical and highlight the need for protocol …
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Exploiting Cyclostationarity for Radio Environmental Awareness in Cognitive Radios
… in continuing this growth. Recent studies on radio spectrum usage have shown that pre-allocation of spectrum bands to specific wireless communication applications leads to poor utilization of those allocated bands. Therefore, research into new techniques for efficient spectrum utilization is …
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Performance modelling and enhancement of wireless communication protocols
… the 802.11 standard family utilizing mainly radio transmission techniques, whereas the Infrared Data Association (IrDA) addressed the requirement for multipoint connectivity with the development of the Advanced Infrared(Alr) protocol stack. This work studies the collision avoidance procedures …
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Návrh regulace teploty výkonové části zařízení pro radiový přenos
… problému přehřívání výkonových zařízení pro radiový přenos, konkrétně vysílacích elektronek, které často dosahují při maximálním provozu příliš vysokých teplot. Jedná se o návrh regulace teploty na tomto zařízení.
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Systemanalyse und Entwicklung Six-Port basierter Funkempfängerarchitekturen unter Berücksichtigung analoger Störeffekte
… of implementation especially for mm-wave transmissions. On the other hand, these novel architectures comprise compensation techniques such that systematically generated spurious signals are inherently compensated in the analog part of the receiver. Moreover, the influence of impairments of …