FUNDAMENTALS OF DATA COMMUNICATIONS in .NET

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Thus, the ambiguity function is a two-dimensional Gaussian function whose center is located at the origin of the r-v plane. Properties of the Ambiguity Function. 1. A time shift of the input signal leads to a modulation of the ambiguity function with respect to the frequency shift v:

(2.9)

Small size. Usually, MLC baluns are designed with the /4 or /2 micro strip lines. Their size is larger and their bandwidth much narrower than that of the toroidal RF transformer. Simple and reliable con guration. Indeed, it appears as merely a small piece of ceramic with some metallic pattern. Low cost. It contains only a top and bottom metallic layer while the MLC contains three or more metallic layers. Therefore, the former has a lower cost.

Walsh Codes Walsh codes are strictly orthogonal codes that can be constructed systematically. As we saw in Section 18.2.6, we de ne the n + 1-order Walsh Hadamard matrix H(n+1) in terms of the nth had order matrix: H(n+1) = had H(n) H(n) had had (n) H(n) Hhad had (25.5)

The performance benefit of partitioned tables doesn t kick in until the table is extremely large billion-row tables in terabyte-size databases. In fact, in some testing, partitioned tables actually hurt performance on smaller tables with less than a million rows, so reserve this technology for the big problems. Maybe that s why table partitioning isn t included in Standard Edition.