Scientific publications—2016

2016 2015 2014 2013 2012 2011 2010

Each year, CRC's researchers author a number of publications communicating successes in advanced wireless telecommunications R&D. Integral to their work is sharing the results with others.

Here you will find abstracts and links to papers published in peer-reviewed scientific journals or books or presented at conference proceedings.

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Research publications—2016
Title Authors
Host cancelation-based spread spectrum watermarking for audio anti-piracy over Internet New

Year: 2016

Abstract: This paper addresses the audio piracy problem over Internet by tweaking data redundancy of host media signal for optimized embedding and extraction of spread spectrum watermarking. In particular, we take into account a special feature that host audio signals have the short-time stationary property and their major power can be removed using linear prediction filter. By combining the redundancy removing and the improved spread spectrum modulation, host interference is canceled with minimized embedding distortion to the host audio. The data redundancy removing is also applied at the receiver to achieve matched filtering and improved performance. Experiments based on real audio signals show that our proposed scheme performs robustly against various kinds of channel attacks while maintaining high extraction performance. Copyright © 2016 John Wiley & Sons, Ltd.

Source title: Security and Communication Networks

DOI: 10.1002/sec.1673

Link: Host cancelation-based spread spectrum watermarking for audio anti-piracy over Internet

Li R., Xu S., Rong B., Yang H.
A low complexity hybrid precoding scheme for massive MIMO system New

Year: 2016

Abstract: In this paper, we propose a hybrid precoding scheme utilizing traditional linear precoding methods to achieve approximate optimal performance with low complexity. The proposed scheme implements phase control using linear precoding methods at the analog precoding domain and employs the same linear precoding method in the digital domain to maintain the antenna gain. We simulate our proposed schemes in both Rayleigh fading channels and a geometric channel based on the extended Saleh-Valenzuela model. The simulation results prove that the proposed scheme can achieve desirable performance in both channel models and has flexibility for various network conditions by combining with different linear precoding methods. © 2016 IEEE.

Source title: 2016 16th International Symposium on Communications and Information Technologies, ISCIT 2016

DOI: 10.1109/ISCIT.2016.7751711

Link: A low complexity hybrid precoding scheme for massive MIMO system

Cai J., Rong B., Sun S.
Compressed sensing based 3D MU-MIMO scheduling in cognitive HetNets New

Year: 2016

Abstract: Most of the already existing spectrum detection algorithms are based on each channel sensing, which lowers the spectrum detection efficiency and makes detecting the spectrum holes promptly very difficult. Traditional MIMO systems are based on 2D MIMO spatial channel models, but in fact the real channel is 3D characterized. This paper proposes a novel scheduling scheme for cylindrical antenna based on compressed sensing algorithm, where higher-order codebook is employed and inter-cell interference appears more spatially white along with a less performance loss. The proposed scheme can effectively sense the vacant spectrum and users based on 3D angular scan and schedule the users with optimized 3D codebook. Simulation results show that our proposed scheme can achieve a considerable gain in terms of throughput and users data rate, with significantly reduced system complexity and increased efficiency. © 2016 IEEE.

Source title: 2016 16th International Symposium on Communications and Information Technologies, ISCIT 2016

DOI: 10.1109/ISCIT.2016.7751716

Link: Compressed sensing based 3D MU-MIMO scheduling in cognitive HetNets

Li Y., Suny S., Rongz B.
Power allocation in small cell networks with full-duplex self-backhauls and massive MIMO New

Year: 2016

Abstract: With the dense deployment of small cell networks, low-cost backhaul schemes for small cell base stations (SBSs) have attracted great attentions. Self-backhaul using cellular communication technology is considered as a promising solution. Although some excellent works have been done on self-backhaul in small cell networks, most of them do not consider the recent advances of full-duplex (FD) and massive multiple-input and multiple-output (MIMO) technologies. In this paper, we propose a self-backhaul scheme for small cell networks by combining FD and massive MIMO technologies. In our proposed scheme, the macro base station (MBS) is equipped with massive MIMO antennas, and the SBSs have the FD communication ability. By treating the SBSs as special macro users, we can achieve the simultaneous transmissions of the access link of users and the backhaul link of SBSs in the same frequency. Furthermore, considering the existence of inter-tier and intra-tier interference, we formulate the power allocation problem of the MBS and SBSs as an optimization problem. Because the formulated power allocation problem is a non-convex problem, we transform the original problem into a difference of convex program by successive convex approximation method and variable transformation, and then solve it using a constrained concave convex procedure based iterative algorithm. Finally, extensive simulations are conducted with different system configurations to verify the effectiveness of the proposed scheme. © 2016 Springer Science+Business Media New York

Source title: Wireless Networks

DOI: 10.1007/s11276-016-1381-1

Link: Power allocation in small cell networks with full-duplex self-backhauls and massive MIMO

Chen L., Yu F.R., Ji H., Rong B., Leung V.C.M.
Fully Printed and Encapsulated SWCNT-Based Thin Film Transistors via a Combination of R2R Gravure and Inkjet Printing New

Year: 2016

Abstract: Fully printed thin film transistors (TFT) based on poly(9,9-di-n-dodecylfluorene) (PFDD) wrapped semiconducting single walled carbon nanotube (SWCNT) channels are fabricated by a practical route that combines roll-to-roll (R2R) gravure and ink jet printing. SWCNT network density is easily controlled via ink formulation (concentration and polymer:CNT ratio) and jetting conditions (droplet size, drop spacing, and number of printed layers). Optimum inkjet printing conditions are established on Si/SiO2 in which an ink consisting of 6:1 PFDD:SWCNT ratio with 50 mg L-1 SWCNT concentration printed at a drop spacing of 20 µm results in TFTs with mobilities of ~25 cm2 V-1 s-1 and on-/off-current ratios > 105. These conditions yield excellent network uniformity and are used in a fully additive process to fabricate fully printed TFTs on PET substrates with mobility values > 5 cm2 V-1 s-1 (R2R printed gate electrode and dielectric; inkjet printed channel and source/drain electrodes). An inkjet printed encapsulation layer completes the TFT process (fabricated in bottom gate, top contact TFT configuration) and provides mobilities > 1 cm2 V-1 s-1 with good operational stability, based on the performance of an inverter circuit. An array of 20 TFTs shows that most have less than 10% variability in terms of threshold voltage, transconductance, on-current, and subthreshold swing.   2016 American Chemical Society.

Source title: ACS Applied Materials and Interfaces

DOI: 10.1021/acsami.6b06838

Link: Fully Printed and Encapsulated SWCNT-Based Thin Film Transistors via a Combination of R2R Gravure and Inkjet Printing

Homenick C.M., James R., Lopinski G.P., Dunford J., Sun J., Park H., Jung Y., Cho G., Malenfant P.R.L.
Design of a dual-band 13/24 GHz frequency selective surface using meandered loop elements

Year: 2016

Abstract: A novel dual-band Frequency Selective Surface (FSS) using double meandered loops is designed to block the transmission of signals at 13 and 24 GHz, while allowing other portions of the RF spectrum to pass. The structure was fabricated using Printed Electronics (PE) technology and both simulated and measured results are reported. © 2016 IEEE.

Source title: 2016 17th International Symposium on Antenna Technology and Applied Electromagnetics, ANTEM 2016

DOI: 10.1109/ANTEM.2016.7550120

Link: Design of a dual-band 13/24 GHz frequency selective surface using meandered loop elements

Chaharmir M.R., Ethier J.
Design of dual-band frequency selective surfaces to block Wi-Fi using printable electronics technology

Year: 2016

Abstract: Design, fabrication and measurement of a special class of engineered surfaces known as frequency selective surfaces (FSSs) is presented in this paper. These FSSs are designed to block the transmission of Wi-Fi signals (2.4 GHz and 5.3 GHz bands) while allowing other portions of the RF spectrum to pass unaffected. Inkjet printing is used to fabricate the FSSs, the details of which will be presented at the conference. © 2016 IEEE.

Source title: 2016 17th International Symposium on Antenna Technology and Applied Electromagnetics, ANTEM 2016

DOI: 10.1109/ANTEM.2016.7550238

Link: Design of dual-band frequency selective surfaces to block Wi-Fi using printable electronics technology

Chaharmir M.R., Ethier J., Lee D., Shaker J.
Compact EBG guides using substrate layered rings

Year: 2016

Abstract: Compact waveguides based on electromagnetic-bandgap (EBG) technology using layered arrays of periodic metallic rings on a substrate have been developed. Structures have been designed and built that operate in the X-band. The measured insertion losses are about 2.8 dB in the overall operating bandwidth. © 2016 IEEE.

Source title: 2016 17th International Symposium on Antenna Technology and Applied Electromagnetics, ANTEM 2016

DOI: 10.1109/ANTEM.2016.7550196

Link: Compact EBG guides using substrate layered rings

Ouassal H., Shaker J., Hettak K., Chaharmir R., Roy L.
Approximate Method for Estimating Gaseous Loss at Very Low Angles along Paths of Finite Length and Earth-Space Paths

Year: 2016

Abstract: This paper presents an approximate method for estimating gaseous absorption at very low elevation angles along paths of finite length or Earth-space paths, taking into account both the effects of the Earth curvature and refraction. An exponential atmosphere is assumed. Gaseous absorption is evaluated by breaking its integral representation into a number of smaller pieces that are evaluated in closed form by the leading term of their asymptotic expansions; there is no need for numerical integration. The new method extends the validity of Annex 2 of Recommendation ITU-R P.676-10 to path elevation angles below 5°. Comparisons with the line-by-line method of the same Recommendation, using radiosonde data as input, show good to very good agreement at 20, 30, and 350 GHz for an Arctic location, a tropical area in Australia, and two midlatitude locations—one in the Rocky Mountains and another closer to sea level. Some limitations of the approximate method over very high mountains, where surface pressure is lower than the 780-hPa reference of the water vapor attenuation model of Annex 2, are also discussed.

Source title: IEEE Transactions on Antennas and Propagation (TAP)

Series Number: Volume 64 Issue 2

DOI: 10.1109/TAP.2015.2510661

Link: Approximate Method for Estimating Gaseous Loss at Very Low Angles along Paths of Finite Length and Earth-Space Paths

Bouchard, P.
A millimeter wave broadband GaAs power amplifier with balanced bias feedings for stability enhancement

Year: 2016

Abstract: This paper presents a fully integrated V-band 3-stage-cascaded power amplifier (PA). It was designed and manufactured in a microchip. The microchip includes the PA Core, biasing circuits, and the matching networks. The purpose of using three stages is not only to maximize gain but also to increase isolation against reflections to achieve good linearity. The PA has been optimized for broadband operation and high stability. The designed PA has achieved a broad operating band from 37.8 GHz to 43.5 GHz with a measured flat gain of 13.8 dB. The input 1-dB gain compression point remains approximately 18 dBm over the entire frequency band. More importantly, the excellent stability has been realized by using balanced bias feeding lines, on-chip resistance structures, and feedback loops.

Source title: 2016 IEEE 17th Annual Wireless and Microwave Technology Conference (WAMICON)

DOI: 0.1109/WAMICON.2016.7483825

Link: A millimeter wave broadband GaAs power amplifier with balanced bias feedings for stability enhancement

Li Ming
Impact of Trust-Based Security Association and Mobility on the Delay Metric in MANET

Year: 2016

Abstract: Trust models in the literature of MANETs commonly assume that packets have different security requirements. Before a node forwards a packet, if the recipient's trust level does not meet the packet's requirement level, then the recipient must perform certain security association procedures, such as re-authentication. We present in this paper an analysis of the epidemic broadcast delay in such context. The network, mobility and trust models presented in this paper are quite generic and allow us to obtain the delay component induced only by the security associations along a path. Numerical results obtained by simulations also confirm the accuracy of the analysis. In particular, we can observe from both simulation's and analysis results that, for large and sparsely connected networks, the delay caused by security associations is very small compared to the total delay of a packet. This also means that parameters like network density and nodes' velocity, rather than any trust model parameter, have more impact on the overall delay. © 2016 KICS.

Source title: Journal of Communications and Networks

Series Number: Volume 18 Issue 1

DOI: 10.1109/JCN.2016.000013

Link: Impact of Trust-Based Security Association and Mobility on the Delay Metric in MANET

Nguyen D.Q., Toulgoat M., Lamont L.
Low Complexity Layered Division Multiplexing for ATSC 3.0

Year: 2016

Abstract: In this paper, we propose novel transmitter and receiver architectures for low complexity layered division multiplexing (LDM) systems. The proposed transmitter architecture, which is adopted as a baseline technology of the Advanced Television Systems Committee 3.0, shares time and frequency interleavers, FFT, pilot patterns, guard interval, preamble, and bootstrap among different layers, so that the implementation of LDM receivers can be realized with less than 10% complexity increase compared to conventional single layer receivers. With such low complexity increment, we show simulation and laboratory test results that the proposed LDM system has significant performance advantage (3-9 dB) over traditional TDM systems, and maintains its performance up to the velocity of 260 km/h in mobile reception. © 2015 IEEE.

Source title: IEEE Transactions on Broadcasting

Series Number: Volume 62 Issue 1

DOI: 10.1109/TBC.2015.2492459

Link: Low Complexity Layered Division Multiplexing for ATSC 3.0

Park S.I., Lee J.-Y., Myoung S., Zhang L., Wu Y., Montalban J., Kwon S., Lim B.-M., Angueira P., Kim H.M., Hur N., Kim J.
Low-Loss Compact Power Combiner for Solid State Power Amplifiers with High Reliability

Year: 2016

Abstract: In this study, a low-loss and compact planar power combiner for solid state power amplifiers (SSPAs) is proposed. It combines eight power amplifier modules with low insertion loss (IL) and high reliability by utilising a novel magic-Tee configuration and E-plane bend along with a suitable microstrip-to-waveguide transition. The fabricated prototype was implemented through automatic milling machines to produce three planar layers that form the final structure. This novel approach enabled precise fabrication, simple assembly of the SSPAs as well as low-cost manufacturing in comparison with existing traditional approaches. This process is suitable for SSPAs operating from 4 to 40 GHz. The combined IL of the implemented combiner network is less than 0.6 dB at Ka-band, 0.5 dB at Ku-band, and 0.4 dB at X-band while exhibiting a 10% fractional bandwidth. © 2016. The Institution of Engineering and Technology.

Source title: IET Microwaves, Antennas and Propagation

Series Number: Volume 10 Issue 3

DOI: 10.1049/iet-map.2015.0403

Link: Low-Loss Compact Power Combiner for Solid State Power Amplifiers with High Reliability

Gholami M., Amaya R.E., Yagoub M.C.E.
SDN Controlled mmWave Massive MIMO Hybrid Precoding for 5G Heterogeneous Mobile Systems

Year: 2016

Abstract: In 5G mobile network, millimeter wave (mmWave) and heterogeneous networks (Hetnets) are significant techniques to sustain coverage and spectral efficiency. In this paper, we utilize the hybrid precoding to overcome hardware constraints on the analog-only beamforming in mmWave systems. Particularly, we identify the complicated antenna coordination and vast spatial domain information as the outstanding challenges in mmWave Hetnets. In our work, we employ software defined network (SDN) to accomplish radio resource management (RRM) and achieve flexible spacial coordination in mmWave Hetnets. In our proposed scheme, SDN controller is responsible for collecting the user channel state information (CSI) and applying hybrid precoding based on the calculated null-space of victim users. Simulation results show that our design can effectively reduce the interference to victim users and support high quality of service. © 2016 Na Chen et al.

Source title: Mobile Information Systems

Series Number: Volume 2016

DOI: 10.1155/2016/9767065

Link: SDN Controlled mmWave Massive MIMO Hybrid Precoding for 5G Heterogeneous Mobile Systems

Chen N., Sun S., Kadoch M., Rong B.
Wireless Radiation Sensor Network with Directional Radiation Detectors

Year: 2016

Abstract: Wireless Radiation Sensor Networks (WRSNs) are promising for military and security applications as they can provide remote detection of sources of radiation with simple, robust radiation detection technologies. This paper shows the results of a combined simulation of wireless networking, and radiation detection with directional gamma-ray detectors. The specific WRSN scenario under study involves a source of radiation being transported through a crossroads. Two different isotopes (60Co and 137Cs) with various activities were simulated to pass through the crossroads at four different speeds (from walking speed to 144 km/hr). A number of different networking and communication protocols were studied. The performance of two algorithms to localize and quantify the radiation sources is presented. © 2014 IEEE.

Source title: 2014 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2014

DOI: 10.1109/NSSMIC.2014.7431111

Link: Wireless Radiation Sensor Network with Directional Radiation Detectors

Liu C., Drouin P.-L., St-Jean G., Deziel M., Waller D.
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