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Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article Interference Management Schemes for the Shared Relay Concept | Hindawi Publishing Corporation EURASIP Journal on Advances in Signal Processing Volume 2011 Article ID 269817 14 pages doi 10.1155 2011 269817 Research Article Interference Management Schemes for the Shared Relay Concept Ali Y. Panah Kien T. Truong Steven W. Peters and Robert W. Heath Jr. Department of Electrical and Computer Engineering The University of Texas at Austin University Station C0806 Austin TX 78712-0240 USA Correspondence should be addressed to Ali Y. Panah ayp@mail.utexas.edu Received 30 June 2010 Accepted 8 September 2010 Academic Editor Robert Schober Copyright 2011 Ali Y. Panah et al. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. Sharing a multiantenna relay among several sectors is a simple and cost-effective way to achieving much of the gains of local interference mitigation in cellular networks. Next generation wireless systems such as ones based on the Third Generation Partnership Projects Long-Term Evolution Advanced will employ universal frequency reuse to simplify network deployment. This strategy is anticipated to create significant cell-edge interference in the location of the shared relays thus rendering advanced interference management strategies a necessity. This paper proposes several interference management strategies for the shared relays ranging from simple channel inversion at the relay to more sophisticated techniques based on channel inversion in combination with partial and full base station coordination in the downlink and uplink. Given that the relay functionality influences total interference both amplify-and-forward and decode-and-forward type relays are considered throughout. In this context channel cancelation techniques are investigated for one-way relaying and also the spectrally efficient two-way relaying protocol. Simulations show that strategies based on .
