tailieunhanh - Báo cáo hóa học: " Research Article Interference-Aware Radio Resource Management for Local Area Wireless Networks"

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-Aware Radio Resource Management for Local Area Wireless Networks | Hindawi Publishing Corporation EURASIP Journal on Wireless Communications and Networking Volume 2011 Article ID 921623 15 pages doi 2011 921623 Research Article Interference-Aware Radio Resource Management for Local Area Wireless Networks Pekka Janis 1 Visa Koivunen 1 and Cassio B. Ribeiro2 1SMARAD CoE Signal Processing Laboratory Aalto University School of Electrical Engineering . Box 13000 00076Aalto Finland 2Nokia Research Center . Box 407 00045 Nokia Group Finland Correspondence should be addressed to Pekka Janis Received 15 November 2010 Accepted 11 February 2011 Academic Editor Boris Bellalta Copyright 2011 Pekka Janis 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. Interference-aware multiple access is an enabler to cost-efficient and reliable high data-rate local area wireless access. In this paper we propose an interference-aware radio resource management scheme where receivers inform about their throughput interference and signal levels by means of broadcast messages tied to data reception. In the proposed scheme the conventional scheduler is extended to interference-aware operation where individual scheduling decisions are based on estimated change in system-level performance. The performance of the proposed scheme is evaluated in system simulations where it is compared to a conventional scheduler and a centralized scheduler global optimum . The convergence of the proposed scheduler is analyzed and signaling overhead of an example implementation is characterized. The results demonstrate that the proposed scheme enables fair and efficient wireless access in challenging interference scenarios for example multiple networks deployed in the same geographical area and sharing a common band. 1. Introduction As the demand for higher data rates for wireless .

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