TAILIEUCHUNG - Báo cáo hóa học: "Research Article Compound Wiretap Channels"

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 Compound Wiretap Channels | Hindawi Publishing Corporation EURASIP Journal on Wireless Communications and Networking Volume 2009 Article ID 142374 12 pages doi 2009 142374 Research Article Compound Wiretap Channels Yingbin Liang 1 Gerhard Kramer 2 H. Vincent Poor 3 and Shlomo Shamai Shitz 4 department of Electrical Engineering University of Hawaii Honolulu HI 96822 USA department of Electrical Engineering University of Southern California Los Angeles CA 90089 USA 3 Department of Electrical Engineering Princeton University Princeton NJ 08544 USA 4 Department of Electrical Engineering Technion-Israel Institute of Technology Technion City Haifa 32000 Israel Correspondence should be addressed to Yingbin Liang yingbinl@ Received 1 December 2008 Revised 5 August 2009 Accepted 24 August 2009 Recommended by Hesham El-Gamal This paper considers the compound wiretap channel which generalizes Wyner s wiretap model to allow the channels to the legitimate receiver and to the eavesdropper to take a number of possible states. No matter which states occur the transmitter guarantees that the receiver decodes its message and that the eavesdropper is kept in full ignorance about the message. The compound wiretap channel can also be viewed as a multicast channel with multiple eavesdroppers in which the transmitter sends information to all receivers and keeps the information secret from all eavesdroppers. For the discrete memoryless channel lower and upper bounds on the secrecy capacity are derived. The secrecy capacity is established for the degraded channel and the semideterministic channel with one receiver. The parallel Gaussian channel is further studied. The secrecy capacity and the secrecy degree of freedom . are derived for the degraded case with one receiver. Schemes to achieve the . for the case with two receivers and two eavesdroppers are constructed to demonstrate the necessity of a prefix channel in encoder design. Finally the multi-antenna . MIMO compound wiretap .

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