Browsing by Issue Date

Now showing items 41-60 of 5198

    • 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 ...

    • 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 ...

    • 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 ...

    • Speech-to-text for Vietnamese language recognition with DSP & FPGA applications 

      Thong, Pham Le Hoang (International University HCMC, Vietnam, 2009)
      This thesis investigates the use of two methods - Hidden Markov Model (HMM) and feed-forward multi-layer perceptrons trained by back-propagation - in Vietnamese speech-to-text recognition. Besides this, the thesis ...

    • 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 ...

    • RFID Reader Design for 125 KHz and 13.56 MHz Applications 

      Phuc, Le Duc (International University HCMC, Vietnam, 2009)
      Deployment of radio frequency identification (RFID) system has been rapidly growing and has the potential to affect many different industries and application such as: tracking and identification, payment and stored value ...

    • 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 ...

    • Speed controller design for the line following robot 

      Duy, Luong The (International University HCMC, Vietnam, 2009)
      Nowadays, automation is becoming the indispensable technology in the general development trend in the world. Many of countries apply new automatic technologies in many fields of life. Robots replace human works and more. ...

    • Zigbee wireless application for RFID door security system 

      Huy, Luu Minh (International University HCMC, Vietnam, 2009)
      This thesis has three major purposes: (1) to establish a simple wireless sensor network using two ZigBee enabled devices; (2) to incorporate the mentioned result into a RFID security door; (3) to develop a computer program ...

    • A Design of transmitter for the High Speed Downlink Packet Access (HSDPA) system in 3G Mobile Networks 

      Phong, Nguyen Duc Bui (International University HCMC, Vietnam, 2009)
      From the achievements gained in the research as well as using cellular systems such as GSM, CDMAOne, etc, HSDPA has been introduced in Release 5 specifications of the 3GPP WCDMA/UTRA-FDD standards as a new ...

    • 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 ...

    • Zigbee Wireless Sensor Network for Smarthome 

      Loc, Luu Gia (International University HCMC, Vietnam, 2009)
      This thesis implements a wireless sensor network based on ZigBee technology for smarthome system. The network includes six nodes with one coordinator, two routers and three end devices. ...

    • 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 ...

    • Study of Vietnamese phonetics 

      Hong, Vu Thi Tuyet (International University HCMC, Vietnam, 2009)
      This senior project does the research in Vietnamese phonetics. It contains the theory of Vietnamese phonetic system, shows the analyzed result of the pitch and the formant of 7 vowels, 6 tones, and the contribution of ...

    • 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 ...

    • 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 ...

    • 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 ...

    • 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 ...

    • 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 ...

    • Possibility to reuse tapioca wastewater for algal cultivation 

      Ngoc, Phan Dinh Mai Bich (International University HCMC, Vietnam, 2009)
      Vietnam is ranked 16th in terms of cassava production on the world. In Vietnam, nowadays, it is predominantly used at raw material for tapioca production, both at household-scale (or small-scale) and large scale production ...