Exact(1)
Mutual coherence measures the maximal correlation between both matrix elements and plays an important role in the success of reconstruction algorithm.
Similar(7)
Therefore, the mutual coherence of measurement matrix in DCS-based channel estimation for MIMO-OFDM system consists of mutual coherence of different SISO-OFDM systems two by two.
We choose a basis Ψ t that has a minimum mutual coherence with the measurement matrix J t. Mutual coherence can be measured for the overall dictionary Θ t =J t Ψ t.
A different way to measure mutual coherence is considering the Gram matrix of equivalent dictionary which is computed after normalizing each column of.
The mutual coherence of the measurement matrix is considered as the fitness function in this paper.
The mutual coherence function is an observable quantity that can be related to the intensity of the field.
Elad [29] designed the measurement matrix based on mutual coherence minimization using a shrinkage operation.
There are three measures for the incoherence of a matrix: the mutual coherence, the restricted isometry property (RIP), and null space property (NSP); the last two being more difficult to compute (e.g. [8]).
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