tailieunhanh - Báo cáo hóa học: " Research Article Throughput of Cellular Systems with Conferencing Mobiles and Cooperative Base Stations"

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 Throughput of Cellular Systems with Conferencing Mobiles and Cooperative Base Stations | Hindawi Publishing Corporation EURASIP Journal on Wireless Communications and Networking Volume 2008 Article ID 652325 14 pages doi 2008 652325 Research Article Throughput of Cellular Systems with Conferencing Mobiles and Cooperative Base Stations O. Simeone 1 O. Somekh 2 G. Kramer 3 H. V. Poor 2 and S. Shamai Shitz 4 1 CWCSPR New Jersey Institute of Technology Newark NJ 07102 USA 2 Department of Electrical Engineering Princeton University Princeton NJ 08544 USA 3 Bell Labs Alcatel-Lucent Murray Hill NJ 07974 USA 4 Department of Electrical Engineering Technion Haifa 32000 Israel Correspondence should be addressed to O. Simeone simeone@ Received 29 July 2007 Accepted 15 February 2008 Recommended by Michael Gastpar This paper considers an enhancement to multicell processing for the uplink of a cellular system whereby the mobile stations are allowed to exchange messages on orthogonal channels of fixed capacity conferencing . Both conferencing among mobile stations in different cells and in the same cell inter- and intracell conferencing resp. are studied. For both cases it is shown that a rate-splitting transmission strategy where part of the message is exchanged on the conferencing channels and then transmitted cooperatively to the base stations is capacity achieving for sufficiently large conferencing capacity. In case of intercell conferencing this strategy performs convolutional pre-equalization of the signal encoding the common messages in the spatial domain where the number of taps of the finite-impulse response equalizer depends on the number of conferencing rounds. Analysis in the low signal-to-noise ratio regime and numerical results validate the advantages of conferencing as a complementary technology to multicell processing. Copyright 2008 O. Simeone 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 .