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Recent content by fallingrain_83

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    OFDM matlab simulation with Doppler shift effect

    Hi all I want a sample source code in matlab for simple OFDM modulation that shows the Doppler shift effect I have some source codes for OFDM but none of them has the Doppler effect I'm wondering if anybody can help thanks :|
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    voltage problem in my PCB

    Hi all friends I do not know if here is the right place to post this I do apologize in advance I designed a PCB board that has 2 A/Ds, 1 Microcontroller, 1 FPGA chip, and other elements the problem is with the voltage supply I have a regulator that converts 5 volt to 3.3 and this voltage...
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    Questions about using PCB Editor routing

    pcb editor performance option Hi I mentioned that I am using PCB editor, so what do you mean by software?PCB editor is one of the cadance tools for designing PCB boards I could find out the answer of my questions To Majnoon: I am a student and I am doing my first PCB board so if you want to...
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    Questions about using PCB Editor routing

    Hi all Friends Hope you are doing fine I have 2 important questions on PCB Editor 1- when I place components manually, I want to place some of them on the buttomn layer rather that top layer but I do not know how to do that and how tomake sure that they are placed on the buttomn layer:?: 2-...
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    errors and warnings when I want to creat netlist!! please he

    error [alg0050] duplicate pin name Hi guys hope to be fine I designed my schematic and I want to creat my netlist 1) for checking rules I use tools->check rule and I solved all the errors but I still have some warnings like: WARNING: [DRC0006] Net has fewer than two connections clock_db_b_n...
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    help me with PCB editor please!!! Urgent

    pcb editor software ver 3.0 Hi all Hope to be fine I really need your help as soon as posible since I am really worried about what I am doing:cry: I am trying to design a board with FPGA cyclone III ep3c80 484 I need the footprints for this device and I found them in altera website...
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    Orcad Capture Problem

    orcad create multiple parts package Hi and thanks of your response I could not find any thing related to how make seperate parts to be a pacjage in help documents, however it has some explanations for that can you tell me where I can find a tutorial for that? since I studied ttutorial flow and...
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    Orcad Capture Problem

    orcad capture problems Hi dear all Friends I have designed a schematic which has some parts seperated from each other I mean for example I devided FPGA device to 3 seperate part: Power, Control, Data... So I want to define them as a single part and define a footprint for that can i connect them...
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    How much RAM do I need for implementing OFDM modulation

    yes it is 1024
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    How much RAM do I need for implementing OFDM modulation

    Hi all for a specific project I have to stimate how much ram do I need for OFDM modulation and demodulation (WiMax) to impliment it on FPGA chip, however I do not know how I can estimate it. I have this information: FFT : 1024 BW: 10Mhz Symbol number: 46: 1- Uplink: 15=12data+3 parity & bit per...
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    How to access block memories

    hi dear all I made a coe file and I want to store it in a block memory and I just want to read from that can anyone tell me how can I access the data which I stored with verilog code? thanks
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    Image processing by Spartan3

    Hi all I want to show an image via VGA and I am using spartan3 Starter kit. I can sho some shapes by VGA but I want to show a real picture and I know that I have to use block memory and COE file but I do not know how to start and what to do Thanks
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    digital watch in verilog- want sample code for 4, 7segments

    digital watch Hi every body I want a sample code for 4, 7segments that are using for a digital watch in verilog I am using spartan 3 starter kit I have problem with keeping all the 7segments on simultanously. Thanks of your help
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    VGA port in FPGA - help me with the verilog code

    fpga vga hi all I want to display a simple red square via on the LCD and I am using xc3200 xilinx chip and I started to work on FPGA stuffs 2 weeks ago:D I'm wondering if someone helps me with the verilog code:| I do not know how to start it. thanks
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    4 different numbers on Spartan3 starter kit

    7Segment display Hi all I am trying to display 4 different numbers on Spartan3 starter kit however I do not know why it is displaying just one number on all 4 7segments I'm wondering if anyone can help me to find where I am wrong!! Thanks My all code is: module segments4(clk,seg,select)...
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