{ "item_title" : "Understanding Digital Signal Processing in Modern Communication Systems", "item_author" : [" Itohowo Umoinyang "], "item_description" : "This is a comprehensive and in-depth course textbook on Digital Signal Processing. And the course is divided into two part of which the first part has to do with Review of Signals and Systems while the second part talks about Digital Filter Design, Stability Test and Sampling. INTRODUCTIONA signal in mathematical term is a function. A function is a dependent variable or some independent variables, and the number of variables could be one or more. These variables could be, for instance, time, distance, temperature etc. In this text book, we are concerned with a function of a single variable which is time, but time will also lose its meaning because, the function of a signal is the function of numbers, and the numbers are also restricted to integers. Therefore, in Digital Signal Processing (DSP) the type of signal we shall be concerned with, shall be functions of 'n' which could be positive or negative integers e.g -14, 0, +15 etc", "item_img_path" : "https://covers1.booksamillion.com/covers/bam/9/79/837/305/9798373050920_b.jpg", "price_data" : { "retail_price" : "250.00", "online_price" : "250.00", "our_price" : "250.00", "club_price" : "250.00", "savings_pct" : "0", "savings_amt" : "0.00", "club_savings_pct" : "0", "club_savings_amt" : "0.00", "discount_pct" : "10", "store_price" : "" } }

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