Electrical Engineering: Recent submissions

Now showing items 101-120 of 125

    • Research and Design Phase Shifter at High Frequency 

      Thien, Nguyen Minh (International University HCMC, Vietnam, 2009)
      In this thesis, new side-coupled Schiffman phase shifters about 482 MHz, 85 degree phase shift and 45 degree are studied. The phase shift results for FR-4 material (PCB material) used in the simulated models are very ...

    • Research and design brandpass filter at about 0.9 GHZ on FR4 substrate 

      Thanh, Nguyen Tuan (International University HCMC, Vietnam, 2011)
      The purpose of this study was to research and design Band-pass filter (BPF) which makes applications for telecommunication at 0.9 GHZ on FR-4 substrate. The microstrip BPF has several types and designs such as: ...

    • Interference cancellation in wireless communications using smart antennas 

      Tuan, Nguyen Minh (International University HCMC, Vietnam, 2009)
      We just consider the way to reduce the interference, from theory there are a lot of ways to do, however, we consider the smart antennas technique based on the two following algorithms in the thesis, that are: • LMS: Used ...

    • Improving performance of OFDM using iterative demapping and decoding 

      Long, Tran Duy (International University HCMC, Vietnam, 2009)
      In this thesis we propose iterative de-mapping and decoding to further impeothe performance of OFDM systems. Matlab software-based simulation results are also provided to show the superiority of the proposed technique to ...

    • Implementation of remote SMS control system 

      Hung, La Hong (International University HCMC, Vietnam, 2009)
      With the topic “Implementation of remote SMS control system”, our mission in this project is to set up a system that can manage home devices and send or receive messages through GSM modem to control their status. The devices ...

    • Home remote control and security system using SMS and telephone 

      Ngan, Tran Kim (International University HCMC, Vietnam, 2009)
      In this thesis, I design a remote control of home security system with the SMS and telephone. The system consists of sensors such as: PIR sensor, smoke sensor, magnetic sensor, electric current sensor, etc for home security ...

    • FPGA implementation of viterbi decoder 

      Tri, Pham Minh (International University HCMC, Vietnam, 2009)
      In this thesis, I present a basic field-programmable gate array implementation of convolutional encoder and Viterbi decoder with a code rate of ½. The data is inputted by computer using MATLAB and the decoded data is gotten ...

    • Exploiting iterative demapping and decoding for multiple access 

      Anh, Le Duc (International University HCMC, Vietnam, 2009)
      We exploit the IDD for multiple access in this thesis and provide a variety of MATLAB software-based simulation results to demonstrate the advantage of the new multiple access technique over the conventional ones such ...

    • Embedded system for IP application 

      Anh, Tran Le (International University HCMC, Vietnam, 2009)
      In this project, I have to learn and research the AVR control, internet protocol chip 28J60, and transfers data chip and 28j60 internet, standard interface chip 28j60 crabs and control. The research activities include ...

    • Dynamic Management of Backbone Transmission Networks 

      Tam, Le Thai Thuan (International University HCMC, Vietnam, 2009)
      . In this thesis, we will find out a new method - called Seamlessly Connection Management Database ( SCMD), we study how to manage simplier, since we can construct a simplest network structure, that has the best transmitting ...

    • Door monitoring system using zigbee networks 

      Duyet, Mai The (International University HCMC, Vietnam, 2009)
      The topic of this thesis is “Door/Window Monitoring System Using Zigbee Network”. The goal of this thesis is to use the Zigbee MRF24J40MA, WPAN 802.15.4 protocol, to transmit and display the status (open or close) of the ...

    • Channel assignment for multiradio wireless mesh networks 

      Quang, Chu Minh (International University HCMC, Vietnam, 2009)
      This thesis focuses on channel assignment problem which involves binding each radio to a channel in such a way that efficient utilization of available channels can be achieved. Some basic concepts of WMNs are introduced ...

    • Carrier Frequency Offset Estimation for OFDM Transmissions 

      Hung, Nguyen Dai (International University HCMC, Vietnam, 2009)
      FDMA, TDMA and CDMA are well known multiplexing techniques used in wireless communication systems. While working with the wireless systems using these techniques, various problems encountered are multi-path fading, ...

    • Building voice over internet protocol system with asterisk 

      Duc, Tran Hoai (International University HCMC, Vietnam, 2009)
      Voice over Internet Protocol (VoIP) is a revolutionary technology, which has become a key topic in both the growing Internet industry and established telecommunications industry. In VoIP technology telephone calls are ...

    • Bayesian decision feedback equalizer 

      Hieu, Bui Thi Nhu (International University HCMC, Vietnam, 2009)
      Bayesian is an elegant solution which is applied for digital communication channel equalization, especially decision feedback equalizer. This is an extension to the maximum a posteriori probability symbol-decision ...

    • Automatic number plate recognition system 

      Trong, Nguyen Ngoc (International University HCMC, Vietnam, 2009)
      This thesis implements an automatic license plate recognition system on Vietnamese vehicles which consist of three distinct stages: license plate localization in which we use Hough transform to detect borders of license ...

    • Audio watermarking implemented in DSP KIT TMS320C5510 

      Hien, Nguyen Tam (International University HCMC, Vietnam, 2009)
      Digital audio watermarking is a technique developed to help in copyright protection of audio files. The research in this area has been spurred by the growth of the Internet, and the ease of copying audio material. This has ...

    • Applying iterative demapping and decoding in Mimo system 

      Duc, Nguyen Quoc (International University HCMC, Vietnam, 2009)
      In wireless communications nowadays, the use of MIMO (Multiple Input - Multiple Output) systems can improve the quality of received signals and capacity of channel to transmitting faster with fixed bandwidth ...

    • Application of SDMA Technique for Cell-Replanning in Mobile Communication Systems 

      Quoc, Huynh Tan (International University HCMC, Vietnam, 2009)
      The thesis objectives are (1) to understand the essential knowledge of mobile communication systems, cell planning and re-planning processes, especially the SDMA technique for cell re-planning including LCMV ...

    • Application of Kalman filter in GPS 

      Son, Banh Truong (International University HCMC, Vietnam, 2009)
      We assume that we have a moving user who is needed to keep track of the position by GPS. The velocity of user is unchanged. Therefore, there will have an acceleration error in x, y, z axis (the velocity is changed). GPS ...