Zohar L. Profile

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$5 USD / ώρα

ha noi,

vietnam

$5 USD / ώρα

Τώρα είναι 9:16 μ.μ. εδώ

Έγινε μέλος Μαρτίου 23, 2019

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Zohar L.

@ZoharLeDoan

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$5 USD / ώρα

ha noi,

vietnam

$5 USD / ώρα

Μ/Δ

Ολοκληρωμένες Δουλειές

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Εντός Προϋπολογισμού

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Εντός Χρόνου

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Βαθμός Επανάληψης Πρόσληψης

Electronics and telecommunications engineer

A little more persistence, a little more effort, and what seemed hopeless failure may turn to glorious success

Προβολή όλων Electronics Engineers σε Vietnam

Επικοινώνησε με τον/την Zohar L. για τη δουλειά σου

Συνδέσου για να συζητήσεις τις λεπτομέρειες μέσω τις συνομιλίας.

Πορτφόλιο

The Morphology operations mainly used to improve the image by clarification (reproduction) of the defining characteristics of the shape, structure; so that can calculate or identify them easily. The use of Morphology operator and application of them, especially the application techniques to enhance image quality image for the preprocessing step, before executing the next step for the image processing. Edges are where the sudden change in light intensity. This feature plays an important role in object identification methods used in machine vision and image processing systems. This paper presents a method for separating edge grayscale image. The approach used here is extracting edges of the input image using the morphological operator.

Separating Edge Grayscale Image

4857020

I built a OCR (Optical Character Recognition) system build an application for Android mobile users, which helps users to recognize objects (shapes, some types of charts,...) captured by device integrated camera and redraw them in Microsoft office applications such as Excel or Word.
- Processing image module:
 Building recognition algorithm and implement by C++ language.
 Get the parameters, the coordinates of the object, then send to java layer through JNI (Java Native Interface).
- Drawing objects module:
 Design interface and the function keys
 Draw the objects in Excel

An OCR system implementation on Android based smart devices

4857015

I built a system using TI TMS320C6713 DSP kit, which can modulate and transmit, then receive and demodulate digital signal.
- Take part in transmitter module:
 Building text entry interface on Matlab.
 Sending data from computer to kit through RTDX port.
 Receiving data from the computer, then modulate data to ASK, FSK, PSK waveform and transmit continuously.
- Take part in receiver module:
 Building data receiver.
 Demodulate obtained digital signal.
 Sending result after demodulating to computer through RTDX port.
 Building text display interface on Matlab.

Design of communication systems using digital modulation and

4857009

I built an embedded system, which can control capturing image with resolution 640x480 pixels from the camera, and put into memory, then send data from the memory to Internet through Ethernet port.
- Take part in part get data from the camera into memory:
 The first is configuration the camera in VGA mode, image resolution is 640x480 pixels, 30 fps image rate, frequency is 12,5 MHz. Configuration by putting the values was prescribed in tutorial of camera into respective registers of camera.
 Then data put through FIFO (FIFO operate as one buffer to sync data rate and processing speed of the FPGA). FIFO can be both read and write concurrently, but reading and writing speed different (slower read write), when FIFO is full, read-only.
 Finally, data from the FIFO into memory SDRAM, SDRAM with a capacity of 8 MB.

Design of embedded system control Camera – Ethernet

4857008

In this project, I designed a CPU similar to the Motorola MC68HC05 CPU. CPU (Central Processing Unit): It has Harvard architecture (data memory and program memory are distinct and different). Includes: a CU block, a ALU block, data memory, program memory, 16-Port I/O.
- Take part in CPU block: CU (Control Unit) has 2 tasks:
 Retrieve data from memory into ALU calculator, then retrieve the data has been processed in the ALU output to store in memory .
 Get command stored in the program memory or input, then put into the ALU.
- Take part in ALU block :
 In ALU has 2 registers store operands, a register store the result and command decode block. ALU execute commands such as: and, or, xor, nor, shift, rotate, addition, subtraction, multiplication and division,...

Design of a CPU similar to the Motorola MC68HC05 CPU

Separating Edge Grayscale Image

4857020

An OCR system implementation on Android based smart devices

4857015

Design of communication systems using digital modulation and

4857009

Design of embedded system control Camera – Ethernet

4857008

Design of a CPU similar to the Motorola MC68HC05 CPU

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Εμπειρία

Mobile network R&D center

Δεκ 2015 - Τρέχουσα

I am responsible for researching technology and types of equipment for LTE/LTE-A mobile networks: testing and building test cases for 4G small cell deployment.

Samsung Vietnam Mobile R&D Center

Ιουν 2014 - Δεκ 2015 (1 χρόνο, 6 μήνες)

I am in charge of System framework. Includes: analyze, debug and fix issues related to Booting, Shutdown sequence, DVM machine, ART compiler, Auto reset, ANR (Android Not Responding), Lock up screen,... on Samsung Mobile Device

Εκπαίδευση

Master

Truòng Dai hoc Bách Khoa Hànôi,

Vietnam

2014 - 2016

(2 χρόνια)

Engineer

Truòng Dai hoc Bách Khoa Hànôi,

Vietnam

2009 - 2014

(5 χρόνια)

Εκδόσεις

FPGA design and implementation of the detector for the MIMO-SDM system using PNC

IEEE conference

By using MIMO-SDM-PNC, multiplexing gain, spectral efficiency and transmission rates can be increased. But until now, there is no technical paper considering and evaluating the MIMO-SDM-PNC system based on hardware design. In this paper, we propose the design and implementation of two detector architectures at the destination node for MIMO-SDM-PNC system on FPGA. Based on the design, we consider the consumption of FPGA elements in our design and design's complexity.