By Harry L. Van Trees
Paperback reprint of 1 of the main revered classics within the historical past of engineering publicationTogether with the reprint of half I and the hot half IV, it will be the main entire remedy of the topic availableProvides a highly-readable dialogue of sign Processing and NoiseFeatures various difficulties and illustrations to assist advertise knowing of the topicsContents are hugely appropriate to present platforms
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Extra resources for Detection, estimation, and modulation theory
14) respectively. 12) as two linear equations with the two unknowns ∂∂x f (z 0 ) and ∂∂y f (z 0 ). 2 can be extended. 2 can be identified from the complex differentials of these functions. 17) 1 ∂z ∗ = ∂z 2 ∂ ∂ − ∂x ∂y (x − y) = 1 (1 − 1) = 0. 1), only derivatives ∗ = 1 but dz does not exist. 2 Let the function f : C × C → R given by f (z, z ∗ ) = zz ∗ . 19) f (z, z ∗ ) = z ∗ , ∂z ∂ f (z, z ∗ ) = z. 20) ∂z ∗ When the complex variable z and its complex conjugate twin z ∗ are treated as independent variables (Brandwood 1983, Theorem 1), then the function f is differentiable in both of these variables.
4 Let A ∈ C N ×M and B ∈ C M×N , then det (I N + AB) = det (I M + B A) . 68) IN, A . 65). 5 Let A ∈ C N ×M and B ∈ C M×N . The N × N matrix I N + AB is invertible if and only if the M × M matrix I M + B A is invertible. If these two matrices are invertible, then B (I N + AB)−1 = (I M + B A)−1 B. 67), it follows that I N + AB is invertible if and only if I M + B A is invertible. By multiplying out both sides, it can be seen that the following relation holds: B (I N + AB) = (I M + B A) B. 69). 4).
N − 1}. 5 Useful Manipulation Formulas In this section, several useful manipulation formulas are presented. Although many of these results are well known in the literature, they are included here to make the text more complete. A classical result from linear algebra is that if A ∈ C N ×Q , then (Horn & Johnson 1985, p. 13) rank (A) + dimC (N (A)) = Q. 55) The following lemma states Hadamard’s inequality (Magnus & Neudecker 1988), and it will be used in Chapter 6 to derive the water-filling solution of the capacity of MIMO channels.