Analysis and design of iterative (turbo) digital receivers

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The objective of this project is to develop methods for analysis of iterative (the so-called "turbo") processing employed in digital receivers as a mean to yield close-to-optimal performance, i.e. almost-error-free communication in adverse conditions. The timeliness of this proposal is due to ever-growing importance of digital communications integrating profoundly the modern life. New technological solutions are "a must" to yield cost-effective products, so research efforts are continuously deployed to design digital transceivers. This research is related to the invention of the so-called turbo-codes, whose break-through idea of iterative processing was quickly extended on many applications. Using the "turbo" principle, the receiver is divided into relatively small blocks (devices) processing the data locally, and exchanging the reliability signals iteratively to approach the globally optimal processing. The reason behind the growing interest in turbo processing is that it yields close-to-optimal solutions with manageable complexity, bringing the performance of practical receivers close to its theoretical limits. It is, therefore, important to analyze theoretical and practical aspects of the iterative algorithms and study their applications.