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Type: Posts; User: weetabixharry

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  1. Closed: Re: Matlab code for implementing LDPC and polar codes for 5G

    In my experience, the best solutions usually aren't found. They have to be written.
  2. Closed: Re: How to plot continuous color plot in matlab representing a 2D array

    Have a look at these functions for making good 3D surface plots. Try rotating the 3D view (in the MATLAB figure) to get the best angle.
    surf(X);
    shading interp;

    The shading interp part makes it...
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    Closed: Re: Increment in Labview on mod 10

    You can use a LabVIEW "shift register".

    You can initialise a variable to zero from outside all your loops and wire through to your inner loop, where it is incremented. Where your wire passes...
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    Closed: Re: Regarding OFDM index modulation?

    If you paste your code here, then someone (probably me) will help you. Also provide some description of why you think your BER curve is not correct.
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    Closed: Re: Regarding OFDM index modulation?

    What programming language would you like your code to be in?

    How would you like your bits to be mapped to symbols? (e.g. QAM, PSK, etc).

    I don't think many researchers are interested in index...
  6. Closed: Re: High-Level Synthesis (HLS) vs RTL for ASIC flow

    However, HLS tools generally generate RTL code (i.e. you input C/C++ and it spits out VHDL/Verilog), which can then be compiled by DC.


    This was almost always true a few years ago. However, HLS...
  7. Closed: TeX still broken on edaboard after a year

    As mentioned in this (closed) thread: https://www.edaboard.com/showthread.php?376196-What-happened-to-Latex-on-this-forum

    TeX support on edaboard seems to have been broken for quite a long time. I...
  8. Closed: Re: Matlab code for getting a word from spoken audio using convolution

    You could start by reading the help for MATLAB's conv function:
    help conv

    What exactly are you trying to do? "Extract" could mean many things. If you are trying to classify words using...
  9. Closed: Re: which is more susceptible to noise low bitrate or high bitrate

    I think it depends what you're doing. I am currently working in the terabits per second, but only moving data from one part of an ASIC to another. If I wanted to move information to/from the edge of...
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    Closed: Re: Error rate vs. bandwidth

    I'm still confused. What bandwidth are we talking about on the x-axis? I'm confused that at the top we have "IF bandwidth = 1.5 times bit rate" and at the bottom we have "bandwidth = bit rate".
    ...
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    Closed: Re: Error rate vs. bandwidth

    This looks like a very carelessly produced graph (e.g. what is "Bit Rage" supposed to mean?).

    Perhaps the x-axis is supposed to be related to bit rate. Given a fixed baud rate, higher bit rates...
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    Closed: Re: 802.11 a and 802.11af

    Overall, they are very different and are targeted towards different devices. (For comparison, it is worth noting that 802.11a is virtually identical to 802.11g - they just operate in different...
  13. Closed: Re: How to find suitable hardware to connect a PC to GSM Network

    You need to be more clear about what you are trying to achieve. What do you mean by "react to phone calls"? What do you mean by "handle multiple calls simultaneously"?

    I think you might be going...
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    Closed: Re: Questions to MIMO synchronisation

    1) To be honest, I'm more confused as to why they say the RF front end should be unsynchronised. For example, if local oscillators are not frequency locked between the multiple receive chains, then...
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    Closed: Re: Building Blocks of Digital Filters

    I guess it depends on how you implement your filter. The answer is different, for example, for a software implementation than for a hardware implementation.

    For a software implementation, it will...
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    Closed: Re: FIR raised cosine matched filter

    If by input 'points' and output 'points' you mean input samples and output samples, then the relationship between their number is the interpolation ratio.
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    Closed: Re: VHDL code for gmsk demodulator

    This would be quite a lot of code for someone to write for you from scratch. Why don't you write a first version? Then you can get help to debug it.
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    Closed: Re: Matlab plot in spherical coordinates

    If that doesn't give the insight you want, then you could write some code at a lower level. For example:


    close all; clear all; clc;

    % Numbers of azimuth and elevation points
    Ntheta = 100;...
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    Closed: Re: Matlab plot in spherical coordinates

    This may sound like a joke, but it really is as simple as this:


    sphere


    If you click on the code, it will take you to the reference page for Matlab's sphere function.
  20. Closed: Re: What is best method for channel estimation in IEEE802.11n with 108 data and 6 pil

    As I said before, the principle is exactly the same. Did you write the original code, or is this something you found online and are trying to adapt? If you understand the original version, you should...
  21. Closed: Re: What is best method for channel estimation in IEEE802.11n with 108 data and 6 pil

    The "best" algorithm really depends on your requirements; it depends on the nature of the channel and the resources you have available to perform the computation.

    It also depends on which part(s)...
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    Closed: Re: Matlab routine & netlist

    Yes, it almost certainly just means normal Matlab code. In this context, routine means the same as function.


    A netlist is a description of the connections in an electronic circuit. For example,...
  23. Closed: Re: Bit Error Trouble with Puncturing Viterbi Decoder

    I use VHDL so would have trouble trying to understand your Verilog. How many bits are you using to represent your soft decisions / LLRs? Are you confident that you are depuncturing correctly before...
  24. Closed: Re: How to Generate the preamble(short and long) for 802.11n with 40Mhz - FFT 128 - 6

    The 64QAM part is irrelevant. That is the data constellation, which is not related to the preamble.

    The short answer to your question is that the training sequences for 40MHz are basically the...
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    Closed: Re: How to learning MATLAB FOR BEGINNER

    If you are new to MATLAB, but not new to programming, then I would certainly recommend Project Euler (here: https://projecteuler.net/).

    If you're completely new to programming, then online MATLAB...
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