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It is our honor to welcome you to The 2012 International Conference on Advanced Technologies for Communications (ATC 2012) co-organized by The IEEE Communications Society, The Radio-Electronics Association of Vietnam, and Le Quy Don Technical University. This is the 5th in the series of conferences about which there are several special points. After 4 years traveling from Hanoi to Hai Phong, Ho Chi...
A tiny difference can sometimes make significant changes. Such events that are occurring around us all the time are called chaos. Yet, chaos theory started only in the 1960s. In this presentation, we introduce chaotic phenomenon and its characteristics. We also discuss the benefits of using chaotic signals in transmitting messages and the development of different types of chaotic communication systems,...
Mobile platforms need ever-increasing computational performances under stringent energy consumption limitation mainly due to the battery lifespan. An optimal operating point is obtained thanks to a compromise between performance and power consumption. For distributed architectures (e.g. MultiProcessor System on Chip), the supply voltage and the operating frequency of each processing element are dynamically...
Multiple-input multiple-output (MIMO) systems have been extensively studied over the last decade because they provide high data-rate transmission without increasing the frequency bandwidth. They have already been in practical use in wireless local area networks (WLANs) and the long term evolution (LTE) of cellular networks. A MIMO system is one of the applications of space-domain signal processing...
In recent years, network coding has generated much interest in information theory, coding theory, networking, wireless communications, cryptography, and computer science. Consider a point-to-point communication network on which a number of information sources are to be mulitcast to certain sets of destination nodes. The problem is to characterize the maximum possible throughputs. Contrary to one's...
A track-and-hold amplifier (THA) for 1GSps 8bit pipelined folding and interpolation (F&I) ADC is realized in TSMC 0.18 µm 1p6m CMOS process. The THA adopts bootstrapped switch instead of simple MOS switch. Dummy transistors and duplicated source follower are also taken to improve its performance. Post simulation results prove that the THA achieves a SNDR of 51.1dB at Nyquist sampling rate. Under...
Detailed description Non-volatile Memory Based on Magnetic Tunnel Junction is presented. A dynamic Verilog-A behavioral model and a Spice macro-model of a single memory cell was developed. The advantages of the proposed models demonstrated on a next generation revolutionary Magnetic Random Access Memory (MRAM) which we offer to implement on an integrated circuit (IC) based on CMOS technology. The...
This study presents power gating techniques to reduce the power consumption in pacemaker device. A novel structure based on power technique in pacemaker device is presented. Experimental results in power reduction and cost overhead by using proposed structure are given. The result in saving power consumption-up to 25%- would be promising because the structure could last usage time of pacemaker device...
The aim of work was to develop natural environments imitators for data protection systems against leakage through optical channels. The article describes the investigation of the spectral and polarization characteristics of green leaves of plants, sand and peat. Spectral and polarization characteristics was studied using goniometric measuring unit G-5 and a spectropolarimeter Gemma MC-09 with resolution...
Over more than 30 years development of Non-intrusive Load Monitoring (NILM), many technologies were developed from sampling frequency 1 Hz to hundreds kHz to extract from simple information such as difference power dP, dQ; shape of transient signatures to complex information such as harmonics or electromagnetic interference (EMI). There are now many real NILM systems in residential applications but...
Inter-carrier interference (ICI) power PICI of Orthogonal Frequency Division Multiplexing (OFDM) systems using channel information and distributed Doppler spread is computed. Selective combining (SC) and maximal ratio combining (MRC) diversity techniques in Rayleigh fading environments without channel noise are employed. Performance of SC and MRC in OFDM systems is assessed. Detailed discussions are...
This paper analyzes the performance of M-PSK systems operating under a class of non-Gaussian noise, modeled as a combination of a white Gaussian noise and an impulsive noise represented by a filtered Poisson process of which the baseband envelope follows the Rayleigh distribution. A tight upper bound of Symbol error rate (SER) is computed. Numerical results are presented in terms of different parameters...
In this paper, we introduce a novel multipath mitigation technique for binary offset carrier signals in global navigation satellite system (GNSS). The proposed technique is based on nonlinear operator called Teager - Kaiser Operator, which initially has been used to obtain energy of physical process. Moreover, the proposed multipath mitigation technique tries to reduce or remove the error caused by...
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