A first course in digital communications 17 58 chapter 3 probability random variables random processes expectation of random variables i statistical averages or moments play an important . Books advanced search todays deals new releases amazon charts best sellers more the globe mail best sellers new york times best sellers best books of the month advanced search todays deals new releases amazon. A first course in digital communications ebook nguyen ha h shwedyk ed amazonca kindle store. A first course in digital communications communication technology has become pervasive in the modern world and ever more complex this introductory textbook allows students to understand the principles underly ing the reliable transmission of information by focusing on the most basic ideas of digital communications carefully paced logically structured and packed with insights and illus