Now showing items 1-20 of 31

  • A 0.18µm CMOS DDCCII for Portable LV-LP Filters 

    Stornelli, Vincenzo; Ferri, Giuseppe (Společnost pro radioelektronické inženýrství, 2013-06)
    In this paper a current mode very low voltage (LV) (1V) and low power (LP) (21 µW) differential difference second generation current conveyor (CCII) is presented. The circuit is developed by applying the current sensing ...
  • 1.5V fully programmable CMOS Membership Function Generator Circuit with proportional DC-voltage control 

    Muniz-Montero, Carlos; Sanchez-Gaspariano, Luis A.; Rocha-Perez, Jose M.; Molinar-Solis, Jesus E.; Sanchez-Lopez, Carlos (Společnost pro radioelektronické inženýrství, 2013-06)
    A Membership Function Generator Circuit (MFGC) with bias supply of 1.5 Volts and independent DC-voltage programmable functionalities is presented. The realization is based on a programmable differential current mirror and ...
  • A 300 GHz "Always-in-Focus" Focusing System for Target Detection 

    Montero-de-Paz, Javier; Enrique Garcia-Munoz, Luis; Segovia-Vargas, Daniel (Společnost pro radioelektronické inženýrství, 2013-06)
    A focusing system for a 300 GHz radar with 5 m target distance and 10 mm diameter spot size resolution is proposed. The focusing system is based on a Gaussian telescope scheme and its main parameters have been de¬signed ...
  • Analyses of 100 Gbps Coherent System Performances 

    Skoda, Pavel; Radil, Jan; Vojtech, Josef; Hula, Miloslav (Společnost pro radioelektronické inženýrství, 2013-06)
    This paper presents the results of laboratory and field testing of coherent 100 Gbps system with DP-QPSK modulation. Several measurements were performed including power budget, nonlinear threshold, spectrum filtration, ...
  • Analysis of ITU-R Performance and Characterization of Ku Band Satellite Downlink Signals during Rainy Season over Chennai Region of India 

    Suresh, Sanjeev; Madhan, M. Ganesh; Sivaraj, Maharaj; Parasuraman, S. (Společnost pro radioelektronické inženýrství, 2013-06)
    In this paper, we present the analysis of Ku band Satellite signal reception during rainy season over Chennai region, India (Latitude: 12° 56' 60 N, Longitude: 80° 7' 60 E). We also examine the effectiveness of International ...
  • Beampattern Synthesis using Reweighted l1-Norm Minimization and Array Orientation Diversity 

    Chen, Hui; Wan, Qun; Fan, Rong (Společnost pro radioelektronické inženýrství, 2013-06)
    The pattern synthesis of sparse antenna arrays has many practical applications in situations where the weights, size, and cost of antennas are limited. In this work the antenna array synthesis problem, with minimum number ...
  • A BIC Based Initial Training Set Selection Algorithm for Active Learning and Its Application in Audio Detection 

    Leng, Yan; Qi, Guang-hui; Xu, Xin-yan (Společnost pro radioelektronické inženýrství, 2013-06)
    To construct a classification system or a detection system, large amounts of labeled samples are needed. However, manual labeling is dull and time consuming, so researchers have proposed the active learning technology. The ...
  • A Comparison of the Machine Learning Algorithm for Evaporation Duct Estimation 

    Yang, Chao (Společnost pro radioelektronické inženýrství, 2013-06)
    In this research, a comparison of the relevance vector machine (RVM), least square support vector machine (LSSVM) and the radial basis function neural network (RBFNN) for evaporation duct estimation are presented. The ...
  • Compressed Sensing based Dynamic PSD Map Construction in Cognitive Radio Networks 

    Afshar Jahanshahi, Javad; Eslami, Mohammad; Ghorashi, Seyed Ali (Společnost pro radioelektronické inženýrství, 2013-06)
    In the context of spectrum sensing in cognitive radio networks, collaborative spectrum sensing has been proposed as a way to overcome multipath and shadowing, and hence increasing the reliability of the sensing. Due to the ...
  • Contrast Enhancement in Poor Visibility Conditions Using Guided Filtering 

    Chowdhry, Danish Ali; Siddiqui, Adil Masood; Touqir, Imran (Společnost pro radioelektronické inženýrství, 2013-06)
    In this paper, extraction of atmospheric veil is proposed to enhance the contrast of the images captured under poor visibility conditions. The method based on guided filtering can accurately recover hidden edges, maintain ...
  • Design of Dual-band Branch-Line Coupler Based on Shunt Open-Circuit DCRLH Cells 

    Lu, Ke; Wang, Guang-ming; Tian, Bo (Společnost pro radioelektronické inženýrství, 2013-06)
    In this article, the shunt open-circuit dual composite right/left-handed (DCRLH) cell is initially proposed and one dual-band branch-line coupler based on the proposed cells is designed. It is found that, compared with ...
  • Diamond Based DDR IMPATTs: Prospects and Potentiality as Millimeter-Wave Source at 94 GHz Atmospheric Window 

    Acharyya, Aritra; Datta, Koyel; Ghosh, Raya; Sarkar, Monalisa; Sanyal, Roshmy; Banerjee, Suranjana; Banerjee, J. P. (Společnost pro radioelektronické inženýrství, 2013-06)
    Large-signal simulation is carried out in this paper to investigate the prospects and potentiality of Double-Drift Region (DDR) Impact Avalanche Transit Time (IMPATT) device based on semiconducting type-IIb diamond as ...
  • DTMOS-Based 0.4V Ultra Low-Voltage Low-Power VDTA Design and Its Application to EEG Data Processing 

    Uygur, Attila; Kuntman, Hakan (Společnost pro radioelektronické inženýrství, 2013-06)
    In this paper, an ultra low-voltage, ultra low-power voltage differencing transconductance amplifier (VDTA) is proposed. DTMOS (Dynamic Threshold Voltage MOS) transistors are employed in the design to effectively use the ...
  • Energy Efficiency Analysis of a Two Dimensional Cooperative Wireless Sensor Network with Relay Selection 

    Kakitani, Marcos; Brante, Glauber; Souza, Richard (Společnost pro radioelektronické inženýrství, 2013-06)
    The energy efficiency of non-cooperative and cooperative transmissions are investigated in a two-dimensional wireless sensor network, considering a target outage probability and the same end-to-end throughput for all ...
  • The Impact of Sensing Range on Spatial-Temporal Opportunity 

    Zhang, Xian; Li, Xiaoqiang; Yun, Zi (Společnost pro radioelektronické inženýrství, 2013-06)
    In this paper, we study the impact of secondary user (SU) sensing range on spectrum access opportunity in cognitive radio networks. We first derive a closed-form ex- pression of spectrum access opportunity by taking into ...
  • Innovative Method of the Power Analysis 

    Martinasek, Zdenek; Zeman, Vaclav (Společnost pro radioelektronické inženýrství, 2013-06)
    This paper describes an innovative method of the power analysis which presents the typical example of successful attacks against trusted cryptographic devices such as RFID (Radio-Frequency IDentifications) and contact smart ...
  • Novel CCII-based Field Programmable Analog Array and its Application to a Sixth-Order Butterworth LPF 

    Mahmoud, Soliman; Soliman, Eman (Společnost pro radioelektronické inženýrství, 2013-06)
    In this paper, a field programmable analog array (FPAA) is proposed. The proposed FPAA consists of seven configurable analog blocks (CABs) arranged in a hexagonal lattice such that the CABs are directly connected to each ...
  • Novel Low Voltage CMOS Current Controlled Floating Resistor Using Differential Pair 

    Tekin, Sezai Alper; Ercan, Hamdi; Alci, Mustafa (Společnost pro radioelektronické inženýrství, 2013-06)
    In this paper, a low voltage CMOS current controlled floating resistor which is convenient for integrated circuit implementation is designed by using differential pair. The proposed resistor has a simple circuit structure ...
  • Online Malicious Behavior Detection in Collaborative Spectrum Sensing: A Change Detection Approach 

    Yao, Junnan; Wu, Qihui; Feng, Shuo; Wang, Jinlong (Společnost pro radioelektronické inženýrství, 2013-06)
    Intelligent attackers in collaborative spectrum sensing system could act as honest users to conceal themselves and start malicious behavior abruptly since an unpredictable time slot. Affected by honest behavior before ...
  • Research on 2×2 MIMO Channel with Truncated Laplacian Azimuth Power Spectrum 

    Wu, Qing; Yang, Xue-Song; Zhang, Yi-Teng (Společnost pro radioelektronické inženýrství, 2013-06)
    Multiple-input multiple-output (MIMO) Rayleigh fading channel with truncated Laplacian azimuth power spectrum (APS) is studied. By using the power correlation matrix of MIMO channel model and the modified Jakes simulator, ...