4 Design an 8-level PAM for binary data transmission. We can use the following pulses in the zero ISI pulse generator: (i) raised cosine pulse with roll-off factor of 0.6; (ii) full-width rectangular NRZ pulse. (a) Generate and compare the two baseband signal waveforms (for 40 random PAM symbols). (b) Generate the eye diagrams of the two signals. (c) Numerically compute estimates of the autocorrelation functions for the two PAM signals. Plot the results to compare against the analytical results given in Sec. 6.7. (d) Estimate the power spectral densities of the two signals by applying both the autocorrelation method and the Welch method

Some of your friends have gotten into the burgeoning field of time-series data mining, in which one looks for patterns in sequences of events that occur over time. purchases at stock exchanges--what’s being bought-- are one source of data with a natural ordering in time. given a long sequence s of such events, your friends want an efficient way to detect certain "patterns" in them--for example, they may want to know if the four events buy yahoo, buy ebay, buy yahoo, buy oracle occur in this sequence s, in order but not necessarily consecutively. they begin with a collection of possible events (e.g., the possible’ transactions) and a sequence s of n of these events. a given event may occur multiple times in s (e.g., yahoo stock may be bought many times in a single sequence s). we will say that a sequence s’ is a subsequence of s if there is a way to delete certain of the events from s so that the remaining events, in order, are equal to the sequence s’. so, for example, the sequence of four events above is a subsequence of the sequence buy amazon, buy yahoo, buy ebay, buy yahoo, buy yahoo, buy oracle their goal is to be able to dream up short sequences and quickly detect whether they are subsequences of s. so this is the problem they pose to you: give an algorithm that takes two sequences of even~s--s’ of length m and s of length n, each possibly containing an event more than once--and decides in time o(m n) whether s’ is a subsequence of s

In a compound condition, both conditions on either side of the logical operator and must be true for the overall condition to be true. a: true b: false

Pl i need the answer now ! which one of the following is considered a peripheral? a software b mouse c usb connector d motherboard