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Statistical Robust Beamforming for Broadcast Channels and Applications in Satellite Communication
This book investigates adaptive physical-layer beamforming and resource allocation that ensure reliable data transmission in the multi-antenna broadcast channel. The book provides an overview of robust optimization techniques and modelling approximations to deal with stochastic performance metrics. One key contribution of the book is a closed-form description of the achievable rates with unlimited transmit power for a rank-one channel error model. Additionally, the book provides a concise duality framework to transform mean square error (MSE) based beamformer designs, e.g., quality of service and balancing optimizations, into equivalent uplink filter designs. For the algorithmic solution, th...
Communications in Interference Limited Networks
This book offers means to handle interference as a central problem of operating wireless networks. It investigates centralized and decentralized methods to avoid and handle interference as well as approaches that resolve interference constructively. The latter type of approach tries to solve the joint detection and estimation problem of several data streams that share a common medium. In fact, an exciting insight into the operation of networks is that it may be beneficial, in terms of an overall throughput, to actively create and manage interference. Thus, when handled properly, "mixing" of data in networks becomes a useful tool of operation rather than the nuisance as which it has been treated traditionally. With the development of mobile, robust, ubiquitous, reliable and instantaneous communication being a driving and enabling factor of an information centric economy, the understanding, mitigation and exploitation of interference in networks must be seen as a centrally important task.
Submodular Rate Region Models for Multicast Communication in Wireless Networks
This book proposes representations of multicast rate regions in wireless networks based on the mathematical concept of submodular functions, e.g., the submodular cut model and the polymatroid broadcast model. These models subsume and generalize the graph and hypergraph models. The submodular structure facilitates a dual decomposition approach to network utility maximization problems, which exploits the greedy algorithm for linear programming on submodular polyhedra. This approach yields computationally efficient characterizations of inner and outer bounds on the multicast capacity regions for various classes of wireless networks.
Drivers of Energy Transition
Wolfgang Gründinger explores how interest groups, veto opportunities, and electoral pressure formed the German energy transition: nuclear exit, renewables, coal (CCS), and emissions trading. His findings provide evidence that logics of political competition in new German politics have fundamentally changed over the last two decades with respect to five distinct mechanisms: the end of ’fossil-nuclear’ corporatism, the new importance of trust in lobbying, ’green ’ path dependence, the emergence of a ’Green Grand Coalition’, and intra-party fights over energy politics.
2010 [catalog]
Reviews are an important aspect of scholarly discussion because they help filter out which works are relevant in the yearly flood of publications and are thus influential in determining how a work is received. The IBR, published again since 1971 as an interdisciplinary, international bibliography of reviews, it is a unique source of bibliographical information. The database contains entries on over 1.2 million book reviews of literature dealing primarily with the humanities and social sciences published in 6,820, mainly European scholarly journals. Reviews of more than 560,000 scholarly works are listed. The database increases every year by 60,000 entries. Every entry contains the following information: On the work reviewed: author, title On the review: reviewer, periodical (year, edition, page, ISSN), language, subject area (in German, English, Italian) Publisher, address of journal
