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: Joint cooperative relay scheme for spectrum-efficient usage and capacity improvement in cognitive radio networks | EURASIP Journal on Wireless Communications and Networking SpringsrOpen This Provisional PDF corresponds to the article as it appeared upon acceptance. Fully formatted PDF and full text HTML versions will be made available soon. Joint cooperative relay scheme for spectrum-efficient usage and capacity improvement in cognitive radio networks EURASIP Journal on Wireless Communications and Networking 2012 2012 37 doi 1687-1499-2012-37 Qixun Zhang zqx830311@ Zhiyong Feng fengzy@ Ping Zhang pzhang@ ISSN 1687-1499 Article type Research Submission date 30 June 2011 Acceptance date 8 February 2012 Publication date 8 February 2012 Article URL http content 2012 1 37 This peer-reviewed article was published immediately upon acceptance. It can be downloaded printed and distributed freely for any purposes see copyright notice below . For information about publishing your research in EURASIP WCN go to http authors instructions For information about other SpringerOpen publications go to http 2012 Zhang etal. licensee Springer. This is an open access article distributed under the terms of the Creative Commons Attribution License http licenses by which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. Joint cooperative relay scheme for spectrum-e cient usage and capacity improvement in cognitive radio networks Qixun Zhang Zhiyong Feng and Ping Zhang Wireless Technology Innovation Institute WTI Key Laboratory of Universal Wireless Communications Ministry of Education Information and Telecommunication Engineering of Beijing University of Posts and Telecommunications BUPT Haidian Dist. Xitucheng Rd. Beijing 100876 . China Corresponding author zqx830311@ Email addresses ZF fengzy@ PZ pzhang@ Abstract In order to improve the e ciency of spectrum resource usage
