oW should coded communication be approached? Is it about prob H ability theorems and bounds, or about algorithms and structures? The traditional course in information theory and coding teaches these together in one course in which the Shannon theory, a probabilistic the ory of information, dominates. The theory's predictions and bounds to performance are valuable to the coding engineer, but coding today is mostly about structures and algorithms and their size, speed and error performance. While coding has a theoretical basis, it has a practical side as well, an engineering side in which costs and benefits matter. It is safe to say that most of the recent advances in information theory and coding are in the engineering of coding. These thoughts motivate the present text book: A coded communication book based on methods and algorithms, with information theory in a necessary but supporting role. There has been muchrecent progress in coding, both inthe theory and the practice, and these pages report many new advances. Chapter 2 cov ers traditional source coding, but also the coding ofreal one-dimensional sources like speech and new techniques like vector quantization. Chapter 4 is a unified treatment of trellis codes, beginning with binary convolu tional codes and passing to the new trellis modulation codes.
Two young hearts found each other in the college. They dreamt of a future together. "But life happened". They had to face certain situations that challenged them in all the ways possible. Defeated by the turmoil of the emotions, they went apart unable to figure out a perfect solution to the puzzle of life. When life gave them a second chance, will gai and Nidhi be able to finally get through the hurdles and retrace their way back to each other?
This is a sincere attempt by a 84 year old father of a brave son, Prashant, to share his lived experience on his son's extraordinary life journey. Prashant, a brilliant student and a perfectly abled boy was crippled into a wheel chair due to a botched up unconsultad surgery that left him paraplegic. The book takes us through the unexpected life of Late Prashant - Driving into a hospital and coming out paraplegic; Completing his Engineering in the wheel chair against all odds of an unaccommodating college management; Working as a software engineer in India's top companies and finally fighting his own case in the Supreme Court of India and winning a landmark judgement against gross medical negligence! Discover the strength, the resilience and perseverance of Prashant's family who faced with calm, wisdom and solidarity an incredible journey!
This book highlights the reality of malnutrition among school-age children in India and relates it with dietary adequacy, diversity and choice. Using empirical data from field research conducted in Karnataka, India, it documents the nutritional status of school-going children, and examines the socio-economic determinants. It provides insights into changing dietary patterns by analysing case studies from households and schools; and documents the impact of changing dietary choices on the daily nutritional intake of young children. As the issue of nutrition for school-age children is one that is largely neglected in the literature, the book fills an important gap. The book also investigates the policy framework for addressing the nutritional needs of school-going children, and assesses the available government-sponsored interventions in terms of their efficiency and effectiveness, measured by their impact on the nutritional indices of the target group. It offers concrete recommendations for changing the nutritional intake of school-going children. Navigating through the socio-cultural causes for changing food choice and their impact on children’s nutritional outcomes, this book shows a viable path to addressing malnutrition, taking into account both macro-level policy constraints and the micro-level perspectives of families, schools and communities.
This book discusses wireless networks, the Internet, and the convergence of the two. The authors begin with an introductory chapter that explores the fields of telephone, wireless, and the Internet. Chapter 2 covers the concept of wireless propagation and propagation models, fundamentals of communications, coding, and information transmission. The evolution of wireless systems is discussed in Chapter 3, while Chapter 4 provides a detailed treatment of Voice over IP (VoIP). Chapter 5 examines issues concerning mobility and QoS in cellular and IP-enabled mobile multimedia networks. Chapter 6 illustrates the working of the IP Multimedia Subsystem (IMS), while Chapter 7 describes 4G wireless systems. Chapter 8 addresses the problems of user and community driven access networks and crowd driven multimedia content. Finally, Chapter 9 analyzes wireless communication methods that are fast evolving and crucial to the evolution of the Mobile Multimedia Internet.
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