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On multicell cooperative transmission in backhaul-constrained cellular systems

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Abstract

Recent work has shown that multicell cooperative signal processing in cellular networks can significantly increase system capacity and fairness. For example, multicell joint transmission and joint detection can be performed to combat intercell interference, often mentioned in the context of distributed antenna systems. Most publications in this field assume that an infinite amount of information can be exchanged between the cooperating base stations, neglecting the main downside of such systems, namely, the need for an additional network backhaul. In recent publications, we have thus proposed an optimization framework and algorithm that applies multicell signal processing to only a carefully selected subset of users for cellular systems with a strongly constrained backhaul. In this paper, we consider the cellular downlink and provide a comprehensive summary and extension of our previous and current work. We compare the performance obtained through centralized or decentralized optimization approaches, or through optimal or suboptimal calculation of precoding matrices, and identify reasonable performance–complexity trade-offs. It is shown that even low-complexity optimization approaches for cellular systems with a strongly constrained backhaul can yield major performance improvements over conventional systems.

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Authors and Affiliations

  1. Vodafone Chair Mobile Communications Systems, Technische Universität Dresden, Dresden, Germany

    Patrick Marsch & Gerhard Fettweis

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  1. Patrick Marsch
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  2. Gerhard Fettweis
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Correspondence to Patrick Marsch.

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Marsch, P., Fettweis, G. On multicell cooperative transmission in backhaul-constrained cellular systems. Ann. Telecommun. 63, 253–269 (2008). https://doi.org/10.1007/s12243-008-0028-3

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  • DOI: https://doi.org/10.1007/s12243-008-0028-3

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