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2
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2answers
41 views
Conditions for precoding matrix to preserve complex conjugate symmetry on DFT vector
Suppose there is a DFT vector $\mathbf{X}$ with length N, which presents complex conjugate symmetry around its middle point, i.e., $X(1) = X(N-1)^*$, $X(2) = X(N - 2)^*$ and so forth. X(0) and X(N/2) ...
1
vote
1answer
74 views
How to compute generator matrix from a parity check matrix?
I have a parity matrix ("H") that is not in canonical form (the identity matrix is not on the right side).
I'm trying to programatically calculate the generator matrix ("G") from it.
The Wikipedia ...
2
votes
1answer
101 views
Doubt on Weighted Least Square Estimation
This is a page from the book linear algebra,geodesy and gps by Gilbert Strang....
the page explains about the justification of the inverse of the of the co variance matrix of measurement vector $b$ ...
2
votes
2answers
91 views
Least Square Error Estimation doubt when can we write $(A^TA)^{ -1} = A^{-1}(A^T)^{-1}$?
I am new to linear algebra and have this simple question...
in least sqaure estimation...the best estimation of the equation $Ax = b$ is $x_{Estimated} = A (A^t A )^{-1} A^t b$...the projection of $b$ ...
5
votes
5answers
299 views
Good book or reference to learn Kalman Filter
I am totally new to the Kalman filter. I've had some basic courses on conditional probability and linear algebra. Can someone suggest a good book or any resource on the web which can help me can ...
14
votes
1answer
521 views
Mathematics of Harris corner point detection
This is the mathematical expression for Harris corner detection:
But I have the following doubts:
What is the physical significance of $u$ and $v$? Many references say it is the magnitude by ...
12
votes
1answer
136 views
Fitting new images from a SVD/PCA calculation
I'm trying to replicate the ideas from the Eigenface page on wikipedia. From a hundred sample images represented by a data matrix $\bf X$ (where each image flattened to a vector of length $n$, thus ...
