Distributed Antenna Systems
O. Somekh, O. Simeone, Y. Bar Ness, S. Shamai, SPAGNOLINI, UMBERTO · Auerbach Publications eBooks · 2007
This chapter presents a survey of information theoretic results available on DAS in cellular systems.The treatment focuses on the derivation of the sum-rate of different inter-cell and intra-cell communications strategies for both uplink and downlink.A simple symmetric family of cellular models in which the inter-cell interferences are emerging from a the adjacent cells only is considered.Although hardly realistic, this family of models accounts for essential parameters of cellular systems such as inter-cell interference and fading.Whenever computation of the sum-rate is intractable or yields little insight into the problem, asymptotic performance criteria (e.g.extreme-SNR parameters) are evaluated.Emphasis is placed on the assessment of benefits of cooperation among APs (i.e.joint detection/precoding). 2CHAPTER 1. AN INFORMATION THEORETIC VIEW OF DISTRIBUTED ANTENNA PROCESSMathematical tools underlying the results are introduced briefly where necessary.Finally, some advanced topics, such as cooperation among terminals, are discussed as well.