Browsing Electrical & Electronics Engineering by Title
Now showing items 422-441 of 695
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Non-line-of-sight ultraviolet communications over atmospheric turbulence channels
(IEEE, 2015)Ultraviolet (UV) communication enables non-line-of sight (NLOS) outdoor wireless connectivity and is particularly desirable to relax or eliminate pointing and tracking requirements of infrared links. In the current literature, ... -
Non-orthogonal multiple access (NOMA) for indoor visible light communications
(IEEE, 2015)Providing multiple access support to visible light communication (VLC) systems requires new networking architecture. Non-orthogonal multiple access (NOMA) is a proposed multiple access technique for future cellular systems. ... -
Non-orthogonal multiple access-based underwater VLC systems in the presence of turbulence
(IEEE, 2022-02)The promising potential of underwater applications in visible light communication (VLC) systems has recently gained considerable research attention, as an efficient technology for enabling high data rate, massive connectivity, ... -
Novel adaptive transmission algorithms for free-space optical links
(IEEE, 2012-12)Atmospheric turbulence is a major degrading factor in free-space optical (FSO) systems. Since turbulence-induced fading results in a very slowly-varying channel, reliable feedback is possible allowing the implementation ... -
Novel channel models for visible light communications
(SPIE, 2015-02-07)In this paper, we investigate channel modeling for visible light communications (VLC) using non-sequential ray tracing simulation tools. We create three dimensional realistic simulation environments to depict indoor scenarios ... -
Novel distributed space-time trellis codes for relay systems over cascaded rayleigh fading
(IEEE, 2010-12)In this letter, we consider the deployment of distributed space-time trellis codes (STTCs) for user cooperation. We derive a pairwise error probability (PEP) expression for distributed STTCs over cascaded Rayleigh fading ... -
A novel pulse-positioned coding scheme for fiber fault monitoring of a PON
(IEEE, 2011-09)In this letter, we propose a novel optical coding scheme for fiber link quality monitoring of a passive optical network (PON). The proposed scheme named incrementally pulse positioned coding (IPPC) is practically very ... -
A novel statistical channel model for turbulence-induced fading in free-space optical systems
(IEEE, 2015-06-01)In this paper, we propose a new probability distribution function which accurately describes turbulence-induced fading under a wide range of turbulence conditions. The proposed model, termed double-generalized gamma (double ... -
A novel statistical model for turbulence-induced fading in free-space optical systems
(IEEE, 2013)In this paper, we propose a new probability distribution function which accurately describes turbulence-induced fading under a wide range of turbulence conditions. The proposed model, termed Double GG distribution, is based ... -
Object ranging and sensing by temporal cross-correlation measurement
(SPIE, 2020)We present a novel method to measure the range of an object in a lab setting. This is realised by utilizing the phase insensitive cross-correlation analysis of the probe and reference photons generated in a spontaneous ... -
Object tracking and identification by quantum radar
(SPIE, 2019)Quantum Radar is a promising technology that could have a strong impact on the civilian and military realms. In this study we introduce a new concept design for implementing a Quantum Radar, based on the time and polarization ... -
Object tracking in the presence of occlusions using multiple cameras: a sensor network approach
( Association for Computing Machinery, 2013)This article describes a sensor network approach to tracking a single object in the presence of static and moving occluders using a network of cameras. To conserve communication bandwidth and energy, we combine a task-driven ... -
Occlusion-aware 3D multiple object tracker with two cameras for visual surveillance
(IEEE, 2014)An occlusion-aware multiple deformable object tracker for visual surveillance from two cameras is presented. Each object is tracked by a separate particle filter tracker, which is initiated upon detection of a new person ... -
Omni-directional wideband antenna array with solar cells
(SciELO - Scientific Electronic Library Online, 2021-03)Distributed sensor networks are becoming more and more widespread due to their substantial benefits to our daily lives. These sensors, in most cases, are distributed in nature and even may require mobility. This, in turn, ... -
On sensor fusion for head tracking in augmented reality applications
(IEEE, 2011)The paper presents a simple setup consisting of a camera and an accelerometer located on a head mounted display, and investigates the performance of head tracking for augmented reality applications using this setup. The ... -
On the benefits of cooperation via power control in OFDM-based visible light communication systems
(IEEE, 2014)In this paper, the performance of a visible light communication (VLC) network exploiting power control is considered. The achievable rate region of two VLC communication pairs is characterized. The system employs optical ... -
On the broadcast capacity of wireless multihop interference networks
(IEEE, 2009)This paper is concerned with wireless broadcasting in multihop networks where a selected number of relay nodes may aid the source node in the broadcast under a given total energy and hop constraint. We study an ad-hoc ... -
On the effects of combined atmospheric fading and misalignment on the hybrid FSO/RF transmission
(The Optical Society, 2016)Free-space optical (FSO) communication is known for its various impairments such as atmospheric turbulence and misalignment fading. In this paper, we study the performance of an FSO link operating under combined path loss ... -
On the effects of temperature on the performances of FSO transmission under qatar's climate
(IEEE, 2017-11-14)Strong atmospheric turbulence can highly affect the free space optical (FSO) link. In fact, the strength of turbulence is depending on weather factors where the temperature is considered as the main parameter increasing ... -
On the feasibility of synchronous, retransmission-based cognitive networks
(Elsevier, 2016-01)This paper presents a new, joint Markov chain model for the primary and secondary traffic in a cognitive radio network to assess the feasibility of opportunistic spectrum access for different operational scenarios, validated ...
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