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Write a MATLAB function called pgm which calculates the periodogram. The function inputs should be the length input vector x and its output should be the length N periodogram estimate Pxx. Generate a length N discrete random signal with the randn function and use the pgm to estimate the PSD for N = 128, 256, and 512. Inspect and comment upon the results. The theoretical autocorrelation function for this discrete Gaussian random signal equals σ2δ (i.e. there is zero similarity between the signal and a shifted version of it), where is the standard deviation of the random signal; for the above random signal (see help randn), is equal to 1. Therefore its true PSD is a constant, unity, for all frequencies. Such a signal is referred to as white noise because it has a constant spectrum independent of frequency, as an, albeit approximate, analogy with white light. The difference between this ideal PSD and those estimated with the datasets is due, in part, to their ?nite lengths. One method to improve these estimates is to apply frequency domain smoothing.
- Employ the ?lt?lt command within MATLAB to smooth the PSD estimates with a zero phase FIR ?lter with impulse response sequence 0.2*[1 1 1 1 1]. Does this improve the apparent PSD estimate?
- Generate a length 1024 discrete random signal with the randn function and sub-divide the signal into eight separate 128 point signals. Estimate the PSD for each length 128 signal and display on two plots the eight results (Note: Break each window into 2× 2 sections. Read help ?gure on how to obtain the second window). Notice the variation of the estimates.
- These eight results can be averaged to yield a new PSD estimator called the averaged periodogram which has less variation than the individual PSDs. Display this result.
Output Statements: disp and fprintf: The Output statements display strings and the answers of expressions and can permit for formatting or customizing how they are exhibited.
Run the MATLAB script sum = single(0); term = single(1); n=1; while sum + term > sum sum = sum+term; n=n+1; term = 1/n; end n Explain what you think it is trying to do. What wou
Write a function called threshold2 (in a file called 'threshold2.m'). The function takes an arbitrary number of input variables. The first input variable, t, is required and is the
can you please help me with matlab coding for CMP? I am new to matlab and hence need help
2)''dbcont'' command for debugging is used to Select one: a. Continue normal code execution from the debug prompt. b. List all breakpoints. c. Execute (step) one or more lines
AApproximate the number to the hundredth, ten-thousandths, and one-hundredmillionth.sk question #Minimum 100 words accepted#
1;write a matlab of geuss elimination with scaling and pivoting under consideration?
The Switch Statement: A switch statement can frequently used in place of a nested if-else or an if statement with numerous else if clauses. The Switch statements are used when
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