# Tagged Questions

In signal processing, estimation is a technique for approximating an unobserved signal from an observed signal containing noise.

16 views

### Estimation problem for M-ary PAM transmission over AWGN channel problem

Here is my AWGN channel model Input $\mathbf{x}$ is from a M-ary PAM alphabet $\mathcal{A}=[-3,-1,1,3]$ $\mathbf{n}\sim\mathcal{N}\left(0,\sigma^2\right)$ whose variance $\sigma^2$ is not known. ...
26 views

### What are the advantages of higher order Kalman Filters like EKF, UKF?

Kalman Filter provides the optimal estimate of the states of a stochastic dynamical system if the system is linear, the measurements are also linear functions of states and the errors in system ...
16 views

### How can I remove additive noise from a speech signal which is a sustained vowel (no pauses)?

I have a speech signal which is a recording of a sustained vowel and it has some additive noise. I do not have any gaps or portions at the beginning or end of the signal with the noise alone to ...
23 views

### Different results for different orders of estimating AR model using Yule-Walker equations

I'm trying to use MATLAB to estimate the AR parameters to the following filter: $$H(z) = \frac{1}{1-0.5z^{-1}+0.25z^{-2} -0.25z^{-4}}$$ As I can see, the process at the output of this filter depends ...
39 views

### Estimate/Compute parameters of image dataset

I have a dataset of images taken by Kinect (RGB and D) How can I extract the following information only from the images: Frame rate Camera height The dataset containes images of person (s) moving ...
22 views

### Any estimation algorithms that allow a user to indicate that certain Solutions are impossible?

Variations of the Kalman filter and other algorithms are used for navigation and target tracking. Often times certain solutions might as well be deemed impossible based on known topography in the area....
48 views

### Goodness of fit for complex valued curves (i.e. frequency responses in frequency domain)

My apologies for perhaps the stupidity of this question. Presume that one has the 'frequency response' $Y_{data}(k)$ of a system and also has an estimated model $Y_{syn}(k)$ that fits the data. How ...
43 views

### Good Reference Problem to Test Filtering/Estimation Algorithms

I am looking to figure out if a current filter algorithm I have built could be useful for some problems I am looking into at work. It isn't a Kalman filter, but is instead making estimations using a ...
67 views

### Estimation of accelerating target using position measurements only

I am currently thinking about approaches to estimating the position and velocity of an accelerating target. At this time, I have tried a few approaches that work alright. I have tried two variations ...
60 views

230 views

### MUSIC algorithm for peak detection

On Wikipedia, is written that MUltiple SIgnal Classification (MUSIC) is an algorithm used for frequency estimation. One purpose of estimating the spectral density is to detect any periodicities ...
60 views

### Novice researcher aims to get published… How to pick a Journal?

I got my MS in EE way back in 1994 and have not presented at a conference, or published in a journal before, but I had and still have an intense interest in the applied math that I learned. I have ...
38 views

### Optimal method to calculate Fractional Fourier for Chirp signals

There are several method exist in the literature to calculate fractional Fourier transform. My interest is in chirp signals and want to find time delay estimation using fractional Fourier transform (...
265 views

### An explanation of parts of the MUSIC Algorithm for someone without a background in signal processing?

I've been looking at every tutorial and paper I can find, but I keep losing the intuition behind what's going on when they get into the matrix operations. There is a step in which the signal vector ...
36 views

### What would be the best way to estimate velocity from a video?

I am not from an EE background, so I am looking for answers to some open-ended questions. I want to calculate how fast water is flowing during a flood. With or maybe even without debris in it. I have ...
25 views

### Is TOA is different for extended target?

The time of arrival (TOA) or time difference of arrival (TDOA) beteen two signals are seen extensively in literature. Are these algorithm applicable for point target as well as extended target? For ...
27 views

### Null Steering using MVDR for a 4 antenna array

I am trying to get a null in the interference direction using MVDR. MVDR requires a matrix inversion. When i am implementing it, i am getting two nulls, one in the desired direction and one more in ...
104 views

### How to estimate filter coefficients of an all-pole system?

Suppose we have measured the frequency response of a system that is known to be all-pole; measuring impulse response is not possible. What are the methods available, if any, to estimate the ...
282 views

23 views

### reverse engineering - RT frequency estimation

I need to maintain code I inherited. The code is for RT frequency estimation. There is not a single line of comment in the code. I was hoping someone here will recognize which technique is being used ...
35 views

### Time and phase estimation in OQPSK using ML criterion

Let me first make an introduction to the problem by stating some intermediate results: An OQPSK signal has the general form: \\\tilde{s}(t)=\sum\limits_{i}\tilde{a}_i g(t-iT)+j\sum\limits_{i}\tilde{...