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 Distributed Cooperative Precoding with Power Control for Cellular Systems with Correlated Antennas at the Receiver | Hindawi Publishing Corporation EURASIP Journal on Advances in Signal Processing Volume 2011 Article ID 706212 12 pages doi 2011 706212 Research Article Distributed Cooperative Precoding with Power Control for Cellular Systems with Correlated Antennas at the Receiver Vinosh Babu James J. 1 2 Bhaskar Ramamurthi 1 2 and Ganesh Venkatraman2 1 Department of Electrical Engineering The Indian Institute of Technology Madras Guindy Chennai 600 036 Tamil Nadu India 2 Centre of Excellence in Wireless Technology IITM Research Park Taramani Chennai 600 113 Tamil Nadu India Correspondence should be addressed to Vinosh Babu James J. vinosbabu@ Received 31 May 2010 Accepted 14 December 2010 Academic Editor Dragan Samardzija Copyright 2011 Vinosh Babu James J. 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. We consider the problem of cooperative precoding working alongside an antenna power allocation algorithm in the downlink of a correlated Multiple Input and Multiple Output MIMO interference channel. An analytical model for the multicell multiuser system with receiver-side correlation is analyzed for a realistic system configuration having two antennas each at the basestation and user terminal. Based on the precoder choices of the different terminals and the per-antenna power levels requested a criterion is proposed for maximizing the received SINR of a severely interference-limited cell-boundary user while controlling the loss in performance of high-SINR in-cell users in the system. A distributed protocol for cooperation amongst the base stations is also proposed. System performance gains measured in terms of mean and cell-edge spectral efficiency values are provided using numerical simulations. An improvement of about 28 to the mean spectral efficiency and 115 to the cell-edge spectral .
