Park, Kihong; Oubei, Hassan M.; Alheadary, Wael; Ooi, Boon S.; Alouini, Mohamed-Slim(Association for Computing Machinery
email@example.com, 2016-10-03)[Conference Paper]
Visible light communication (VLC) has attracted great attention with the development of the emerging solid-state lighting sources. Multiple-input multiple-output (MIMO) technique is promising to support high data rate VLC thanks to the deployment of multiple lighting sources. However, high channel correlation in indoor MIMO-VLC channels is critical to the performance of indoor MIMO-VLC systems. The advanced non-imaging receivers in recent works reduce the channel correlation by directivity for each photodetector (PD) by interfering the reception of light oriented in the specific direction. Contrary to previous works, we propose in this paper a new mirror-embedded non-imaging receiver which not only blocks the reception of light on one specific direction but also improves the channel gain on the other direction by receiving the light reflected by a double-sided mirror deployed between the PDs. Numerical results and experimental demonstration show that our proposed mirror diversity receiver (MDR) are more beneficial to obtain well-conditioned channel matrices for spatial-multiplexing MIMO-VLC systems supporting high speed data transmission.
Shen, Chao; Leonard, John T.; Young, Erin C.; Ng, Tien Khee; DenBaars, Steven P.; Speck, James S.; Nakamura, Shuji; Alyamani, Ahmed Y.; El-desouki, Munir M.; Ooi, Boon S.(Institute of Electrical and Electronics Engineers (IEEE), 2016-12-19)[Conference Paper]
We achieved a -3dB modulation bandwidth of 1GHz with an ultra-low capacitance of <; 1pF in a 419nm vertical-cavity surface-emitting lasers (VCSEL). The VCSEL is based on nonpolar InGaN/GaN quantum-wells and a tunnel-junction intracavity contact.
Zhao, Chao; Ng, Tien Khee; Wei, Nini; Prabaswara, Aditya; Alias, Mohd Sharizal; Janjua, Bilal; Shen, Chao; Consiglio, Giuseppe Bernardo; Alyamani, Ahmed Y.; El-desouki, Munir M.; Ooi, Boon S.(Institute of Electrical and Electronics Engineers (IEEE), 2016-12-19)[Conference Paper]
The first high-power InGaN/GaN quantum-disks-in-nanowires red (λ=705 nm) light-emitting diodes on metal substrates was demonstrated. The low turn-on voltage and high power were achieved through the direct growth of high-quality nanowires on TiN/Ti/Mo stack.
Liu, Changxu; Huang, Jianfeng; Yu, Han; Fratalocchi, Andrea(Institute of Electrical and Electronics Engineers (IEEE), 2016-12-19)[Conference Paper]
We developed a blackbody system based on gold nanoparticles with broad band absorption, which can be utilized as emitters for a new type of light source and perfect absorbers in high-efficiency on-site water desalination.
Gongora, J. S. Totero; Miroshnichenko, Andrey E.; Kivshar, Yuri S.; Fratalocchi, Andrea(Institute of Electrical and Electronics Engineers (IEEE), 2016-12-19)[Conference Paper]
We show how the spaser technology in the presence of a realistic source of quantum noise can be employed as a building block for designing new integrated sources for quantum simulators at the nanoscale.
Oubei, Hassan M.; Duran Retamal, Jose Ramon; Janjua, Bilal; Wang, Huai-Yung; Tsai, Cheng-Ting; Chi, Yu-Cheih; Ng, Tien Khee; Kuo, Hao-Chung; He, Jr-Hau; Alouini, Mohamed-Slim; Lin, Gong-Ru; Ooi, Boon S.(Institute of Electrical and Electronics Engineers (IEEE), 2016-12-19)[Conference Paper]
We experimentally realized a gigabit underwater wireless optical communication system using commercially available 450 nm blue laser diode. By implementing 16-QAM-OFDM modulation, we achieved data rate of 3.2 Gbit/s with a BER of 6.83×10-4over 6.6 m channel.
Krykpayev, Bauyrzhan; Farooqui, Muhammad Fahad; Farooqui, Muhammad Fahad; Bilal, Rana Muhammad; Bilal, Rana Muhammad; Shamim, Atif; Shamim, Atif(Institute of Electrical and Electronics Engineers (IEEE), 2016-05)[Conference Paper]
Despite the abundance of localization applications, the tracking devices have never been truly realized in E-textiles. Unobtrusive and flexible integration of tracking devices with clothes is difficult to achieve with standard PCB-based devices. An attractive option would be direct printing of circuit layout on the textile itself, negating the use of hard PCB materials. However, due to high surface roughness and porosity of textiles, efficient and reliable printing of electronics on textile has remained elusive. In this paper, an interface layer is first printed on the textile to facilitate the printing of a complete localization circuit and antenna for the first time. The tracking device utilizes WiFi to determine the wearer's position and can display this information on any internet-enabled device, such as smart phone. The device is small enough (55 mm × 45 mm) and lightweight (22g with 500 mAh battery) for people to comfortably wear it and can be easily concealed in case discretion is required. The device operates at 2.4GHz with communication range of up to 55 meters, and localization accuracy of up to 8 meters.
Hussain, Muhammad Mustafa(Institute of Electrical and Electronics Engineers (IEEE), 2016-08)[Conference Paper]
Summary form only given. Computation and infotainment are the two major areas where Complementary Metal Oxide Semiconductor (CMOS) electronics have made major contributions. Moving forward we expect to see their dominance in automotive applications. At the same time, we are seeing increased interest in the area of Internet of Things (IoT) to connect trillions of sensors. We are preparing for Internet of Everything (IoE) applications where people, process, data and devices are going to be connected through new generation of electronics which are not possible today. Therefore, our research is focused on hybrid integration of heterogeneous materials, processes and devices to build free form (flexible, stretchable, reconfigurable in shape and size) interactive and high-performance electronics and systems for smart living and a sustainable future focusing on healthcare, water, food and environment. For scientific exploration, we develop integration strategy to make collective use of the materials, processes and device architecture leveraging multidisciplinary tracks of electrical engineering, material science, bioengineering, computer science and engineering, mechanical engineering, environmental engineering (focusing plants and marine science) and health science. As engineering tool, we use CMOS technology extensively due to its industrial relevance, maturity and reliability for rapid tech transfer. In my talk, I will discuss the advances we have made to make tomorrow's applications available today. Specifically I will be using some examples which are commercially relevant and/or under commercialization: (i) healthcare devices; (ii) 3D printed smart objects with embedded electronics; (iii) plug and play smart electronic platforms with integrated sensors and actuators and (iv) physically reconfigurable shape systems.
Ahmed, Sajid; Alouini, Mohamed-Slim(IEEE Aerospace and Electronic Systems Magazine, Institute of Electrical and Electronics Engineers (IEEE), 2016-03)[Article]
To change the transmit beam pattern, single antenna radar requires a change of antenna while multiple antenna array radar, such as phased-array, require amplitude/phase tapers, which are hardware components. Therefore, there is a genuine demand that the parameters of future radar systems be controlled through a software without changing any hardware or using amplitude/phase tapers. It is well known that the parameters of an antenna array radar can be controlled by transmitting suitable correlated waveforms. This approach provides more degree-of-freedom and if constant-envelope (CE) or low peak-to-average power ratio (PAPR) correlated waveforms are used, it allows us to control the parameters of the radar without changing any hardware. Therefore, this approach can be considered as a step towards a software radar. The aim of this article is to provide a survey of recent techniques used to design CE and low PAPR correlated waveforms and discuss the benefits and drawbacks of each.
Ergül, Özgür; Uysal, Ismail Enes; Ulkü, H. Arda; Bagci, Hakan(URSI Radio Science Bulletin, URSI, 2016-06)[Article]
We have received a pair of new problems involving plasmonic spheres and their reference solutions in the time domain. The main focus of SOLBOX-04, which was submitted by Ismail E. Uysal, H. Arda Olku, and Hakan BagcI, is computing scattered fields from gold spheres. The challenge is incorporating plasmonic effects that dominate at optical frequencies. In addition to negative permittivity values to be used in the implementations, the submitters had to deal with the highly dispersive properties of the structures in the time domain. Reference solutions were also provided along with the descriptions of the problems. Mie-series solutions were also available for one of them, demonstrating the accuracy of their approach. We are looking forward to receiving alternative solutions for these new, challenging problems, as well as for the previous submissions in the earlier issues (SOLBOX-Ol, SOLBOX-02, and SOLBOX-03).
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