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 Multiuser Resource Allocation Maximizing the Perceived Quality | Hindawi Publishing Corporation EURASIP Journal on Wireless Communications and Networking Volume 2009 Article ID 341689 15 pages doi 2009 341689 Research Article Multiuser Resource Allocation Maximizing the Perceived Quality Andreas Saul and Gunther Auer DOCOMO Euro-Labs Landsberger Str. 312 80687 Munich Germany Correspondence should be addressed to Andreas Saul saul@ Received 1 August 2008 Accepted 24 January 2009 Recommended by Thomas Michael Bohnert Multiuser resource allocation for time frequency slotted wireless communication systems is addressed. A framework for application driven cross-layer optimization CLO between the application APP layer and medium access control MAC layer is developed. The objective is to maximize the user-perceived quality by jointly optimizing the rate of the information bit-stream served by the APP layer and the adaptive resource assignment on the MAC layer. Assuming adaptive transmission with long-term channel state information at the transmitter CSIT we present a novel CLO algorithm that substantially reduces the amount of parameters to be exchanged between optimizer and layers. The proposed CLO framework supports user priorities where premium users perceive a superior service quality and have a higher chance to be served than ordinary users. Copyright 2009 A. Saul and G. Auer. 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. 1. Introduction With the high envisaged data rates of beyond 3rd generation B3G wireless communication systems 1 2 multimedia broadband applications can be offered to mobile users. Multimedia applications are characterized by a multitude of data rate and quality of service QoS requirements. On the other hand owing to the nature of the mobile radio channel frequency selective fading distance dependent path loss and shadowing .
