Adaptive Block Diagonalization and User Scheduling With Out of Cluster Interference

Konferenz: European Wireless 2014 - 20th European Wireless Conference
14.05.2014 - 16.05.2014 in Barcelona, Spain

Tagungsband: European Wireless 2014

Seiten: 6Sprache: EnglischTyp: PDF

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Garcia Fernandez, Juan Jose; Garcia Armada, Ana (Dept. Signal Theory and Communications, Universidad Carlos III de Madrid (UC3M), Madrid, Spain)
Rubio, Javier; Pascual-Iserte, Antonio (Dept. Signal Theory and Communications, Universitat Politecnica de Catalunya (UPC), Barcelona, Spain)
Font-Bach, Oriol; Bartzoudis, Nikolaos (Centre Tecnologic de Telecomunicacions de Catalunya (CTTC), Castelldefels, Spain)

Interference in a cellular network is one of the main impairments that needs to be overcome. Coordination among the Base Stations may enable the use of the interference to improve the transmission rate at the cost of increased computational complexity and more stringent backhaul and feedback requirements. Practical problems of global coordination can be reduced through clustering which, in turn, will introduce Out of Cluster Interference (OCI). OCI can seriously hamper the advantages brought by precoding techniques like Block Diagonalization (BD). In this work we propose a mixed transmission strategy using BD and Single User transmission that is able to overcome the problems introduced by the OCI, in combination with a low complexity scheduling algorithm that enables an increased transmission rate in a multiuser scenario.