Dissertation > Excellent graduate degree dissertation topics show

Analysis of the Secrecy Performance of Poisson Channel with an Eavesdropper

Author: ZhangLiLi
Tutor: ZhaoJunXi
School: Nanjing University of Posts and Telecommunications
Course: Applied Mathematics
Keywords: Poisson channel Direct detection photon channel Wiretap channel Achievable rate Optical communication
CLC: TN911.5
Type: Master's thesis
Year: 2012
Downloads: 54
Quote: 0
Read: Download Dissertation

Abstract


The application of the wireless communication greatly improve people’s communication, make the communication and exchange for people can finish anytime and anywhere. However, not all information or resources are shared. In the pattern of wireless communication, any users will receive the signals from the sender. This makes some private information to suffer eavesdropping and intercepting. Wireless optical communication, is inherently more secure than RF communicati- on due to the intrinsic aspects of the signal propagation in the optical and near-optical frequency range. Especially for laser communication, its monochromatic, orientation, coherence and high brightness characteristics make it become the ideal light source of optical communication. But due small scale fading it is difficult to predict which of the main or wire tapper channel has a better quality. The purpose of this paper is to study the security capacity of a direct detection optical communication system, provide the basis for optical communication security.This paper mainly researches the capacity region of Poisson channel with eavesdropper. The problem of capacity regions of BSC/BEC broadcast channel has always been a basic problem. At first, this paper deeply analyses the achievable rate region of BSC/BEC broadcast channel in different probability values and proves its achievability. Then this paper presents the assumption that one of receivers is eavesdropper channel, which obtains the containing relationship chart among the more capable channel, degraded channel and less noise channel.With the optical communications security theory, a study in this paper is the security capacity of Poisson wiretap channel. For the same input distribution, its capacity will have different performance under different dark current and peak power constraints. This paper summarizes the capacity results of Poisson channel under different constraints and analyses the encoding and decoding methods. In addition, for the Poisson wiretap channel with private message set, the maximum likelihood decoding method is given under the optimal situation. Finally, the achievability of the capacity region in the degraded Poisson wiretap channel is proved and this paper also proposes another kind of representation of degradation conditions in Poisson wiretap channel.

Related Dissertations

  1. Study on Simultaneous Transmission of Millimeter-Wave and UWB Signals in RoF System,TN915.6
  2. Space optical communication precision laser beam collimation system design,TN929.1
  3. Equipment Configuration and Optical Amplifier Module Analysis for Long-span Unrepeatered Optical-fiber Communication Systems,TM73
  4. Investigation of Double-Clad Erbium-Ytterbium Co-Doped Fiber Amplifier,TN253
  5. Optical Modulation and Signal Detection for Advanced Optical Communication Systems,TN929.11
  6. Study of the Mode Group Diversity Multiplexing in Multimode Fiber Communication System,TN929.1
  7. The Feasibility Research and Design for the Trunk Communication Network of the First-stage Project of Eastern Line of South-to-North Water Diversion Project,TN915.02
  8. Investigations of Characteristics and Applications of Chirped and Phase-shifted Fiber Bragg Gratings,TN253
  9. The Research and Design about Encoding of Digital Optical Communication,TN929.11
  10. Study on Novel Optical Modulation and Re-modulation WDM-PON Techniques,TN929.11
  11. Coherent optical communications , optical phase-locked loop technology research,TN929.1
  12. LCD 's non - mechanical the ATP key technology research,TN929.1
  13. The 90 ° photomixer coherent optical communication,TN929.1
  14. Optical phase-locked loop the loop design and simulation research,TN929.1
  15. The Costas light Phase-Locked Loop,TN929.1
  16. The Tentative Program of the Satellite Optical Communication and the Analysis of Its Influence from Platform Vibration,TN929.1
  17. Simulation and Research of Digital Signal Processing for Coherent Optical Communication System,TN929.1
  18. The Analysis of Optical Modulation, Transmission and Demodulation in the DD-OFDM System,TN919.3
  19. The Research of Millimeter-Wave Signal and Intermodulation Distortion Based on MZM in ROF System,TN929.11
  20. The Research of Channel Model Simulation in Optical Space Communication,TN929.1
  21. Research on All-optical Buffer System Based on Dual Loop Coupling,TN929.1

CLC: > Industrial Technology > Radio electronics, telecommunications technology > Communicate > Communication theory > Channel equalization
© 2012 www.DissertationTopic.Net  Mobile