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Recent content by Awais88088

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    Number of operations required by QAM demodulation (Complexity of QAM)?

    Number of operations required by QAM demodulation (Complexity of QAM) ? HI How can we calculate the number of multiplications, additions, comparisons etc for QAM demodulation ? Complexity of QAM demodulator.
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    Matching Pursuit and Orthogonal Matching Pursuit

    What is the difference between 'Matching Pursuit' and 'Orthogonal Matching Pursuit' ?
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    Time and Frequency domain representation of spreading sequences

    How can I generate orthogonal spreading sequences in Matalb in frequency and time domain? What properties a set of spreading sequences should have ? e.g in time domain x=randi([0 1], 10,1); % time domain signal SprdSeq= rand(20,20); %% HOW to GENERATE ORTHOGONAL ? Spreadedsignal= SprdSeq...
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    Frequency Selective fading channel

    I have implemented the frequency selective channel. Can you please have a look if its correct ? %% implementation of Freq selective channel x=randi([0 1],100,1); % signal n=length(x); taps=6; temp = (randn(taps,1) + 1i*randn(taps,1))./sqrt(2); temp = [temp ; zeros(n-taps,1)]; Channelcoeff =...
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    Frequency Selective fading channel

    Thanks. Is there any equation to get the channel coefficients (H). As in flat fading the coefficients are Raleigh distributed. But in freq selective we also have to include the delays e.g in 4 tap channel.
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    Frequency Selective fading channel

    Thank you Can you please refer me any such code . I am new in Matlab. If you have any sample code or any tutorial regarding 'Frequency selective modeling' please refer me. I know the theory behind the flat fading and frequency selective fading but feeling difficulty in implementation.
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    Frequency Selective fading channel

    I have the following code for single tap flat fading channel. x= rand([0 1],1,100) L=length(X); %Signal length h= sqrt(0.5*((randn(1,L)).^2+(randn(1,L)).^2)); Data_sent = x.*h; Now, I want to model a 6 tap FREQUENCY SELECTIVE channel, how can I modify the above MATLAB code ? -...
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    Frequency Selective fading channel

    Frequency Selective fading channel (Channel Taps) What is the physical significance of "channel tap" in a Raleigh fading channel ? Is it related to number of paths and how to determine the number of taps? As the single tap flat fading channel is implemented as Data_length=length(Data); %%...
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