WNCG

WNCG Introduces New Affiliate Membership Level

Effective February 2015, WNCG is pleased to announce the introduction of a new Level III membership option in its Industrial Affiliate Program. The Industrial Affiliate Program allows companies to become stakeholders in WNCG and to participate in the growth and direction of the center. Initially founded to significantly lower the cost of pre-competitive research for each sponsor, the program maximizes benefits to each sponsoring company.

Ultra-Thin Unidirectional Carpet Cloak and Wavefront Reconstruction With Graded Metasurfaces

Metamaterials and artificial materials with effective properties that may be controlled to a large degree have been at the basis of exciting schemes for wave manipulation and are particularly well suited to hide an object from electromagnetic waves. To realize practical invisibility cloaks, transformation electromagnetics (TE) methods and scattering cancellation techniques are currently the most popular approaches. Simplified versions of these proposals have been implemented and examined in recent years. 

Multiple Fano Interferences in a Plasmonic Metamolecule Consisting of Asymmetric Metallic Nanodimers

In this work, WNCG Prof. Andrea Alù, WNCG student Jing Bai and Prof. Khai Q. Le from Hoa Sen University in Vietnam theoretically explore signatures of plasmonic Fano interferences in a sub-wavelength-plasmonic metamolecule. Consisting of closely packed asymmetric gold nanodimers, these signatures lead to the possibility of generating multiple Fano resonances in the scattering spectrum. This spectral feature is attributed to the interference between bright and dark plasmonic modes sustained by the constituent nanodimers.

An Invisible Acoustic Sensor Based on Parity-Time Symmetry

Sensing an incoming signal is typically associated with absorbing a portion of its energy, inherently perturbing the measurement and creating reflections and shadows. Here, in contrast, Prof. Andrea Alù and students Romain Fleury and Dimitrios Sounas demonstrate a non-invasive, shadow-free, invisible sensor for airborne sound waves at audible frequencies, which fully absorbs the impinging signal, without at the same time perturbing its own measurement or creating a shadow.

Institute of Navigation presents Prof. Todd Humphreys with the Thomas L. Thurlow Award

Manassas Virginia, January 28, 2015 - The Institute of Navigation (ION) presented its Thomas L. Thurlow Award to Dr. Todd Humphreys at the ION International Technical Meeting (ITM)in Dana Point, California, January 26-28, 2015.

Dr. Humphreys was recognized for contributions that enhance radionavigation security and robustness in the face of intentional spoofing and natural interference.

Open House 2015 Creates Recruitment Opportunities for Students and Industry

WNCG Industrial Affiliates, faculty and students come together for an annual event focused on WNCG's greatest resource; a collection of some of the world's brightest students. Open House provides recruitment opportunities to Industrial Affiliate Members through close access to WNCG student research and resumes, as well as creates opportunities for one-on-one meetings with WNCG students. 

Limited Feedback Hybrid Precoding for Multi-User Millimeter Wave Systems

The large bandwidths in the mmWave spectrum make mmWave communication desirable for wireless local area networking and also a promising candidate for future cellular systems. Achieving high quality communication links in mmWave systems requires employing large antenna arrays at both the access point or base station (BS) and the mobile stations (MS). For efficient system performance, each BS needs to simultaneously serve a number of MS. Multiplexing different data streams to different users requires some form of precoding be applied to generate the transmitted signal at the BS.

Millimeter Wave Vehicular Communication Radar

Surface transportation safety can be enhanced by the use of wireless technologies, mainly automotive radar and vehicle-to-vehicle (V2V) communication. Automotive radar provides a high-resolution low-latency approach for a continuous automatic detection and ranging of both communication-enabled and non-communication-enabled transportation users. V2V systems rely on the collaborative communication between vehicles to achieve a real-time cooperative detection and ranging. They can operate beyond the line-of-sight constraints of radar solutions.

WNCG Alum Chun-Hung Liu wins IEEE Best Paper Award

Recent WNCG Alumnus Prof. Chun-Hung Liu won the Best Paper award at the 2014 IEEE Workshop on Heterogeneous and Small Cell Networks, held in conjunction with IEEE Globecom in Austin, Texas.   His paper was entitled "Adaptive Downlink CoMP in Heterogeneous Cellular Networks with Imperfect Overhead Messaging”, which is on utilizing several base stations to coordinate their transmissions to boost signal power and reduce other-cell interference, while having imperfect and limited connections between them. Prof. Liu was the sole author.
 

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