Dissertation > Excellent graduate degree dissertation topics show

Study on the Effects of Pluse Radiation Distortion on the Performance of IR-UWB

Author: KongWa
Tutor: WangGang
School: Jiangsu University
Course: Communication and Information System
Keywords: Impulse Radio (IR) Ultra-wideband Communication Aperture Antenna Pulse Distortion Bit Error Rate (BER)
CLC: TN925
Type: Master's thesis
Year: 2006
Downloads: 83
Quote: 1
Read: Download Dissertation

Abstract


Recently, more and more effort was devoted to short-range ultra-wideband (UWB) communication systems, which operate under the FCC emission limits regulated for the allocated indoor/outdoor UWB band. After a brief introduction to the three prevailing UWB communication schemes, viz. the impulse radio (IR), the direct sequence-CDMA (DS-CDMA) and the multi-band OFDM (MB-OFDM), and a detailed comparison of their technical characteristics, the IR-UWB is considered as an example to study the influence of the radiation characteristics of UWB antenna on the UWB communication system performance.As is well known, the radiation of UWB antenna will introduce angle-dependent pulse distortion, i.e., the pulse waveforms radiated in different directions could be obviously different. In illustration of such angle-dependent distortion, a Gaussian pulse excited aperture is studied with uniform aperture field distribution, linearly-tapered aperture field distribution and Gaussian aperture field distribution, respectively. It turns out that more obvious pulse distortion can be observed as the radiation direction deviates more from the aperture’s principal radiation direction. Generally, the peak value of the radiated waveform reduces and the pulse width increases for larger direction angle, and more serious angle-dependent pulse distortion can be observed for antenna with higher directivity.Due to the angle-dependent pulse distortion, UWB receivers at different directions will capture different pulses, and thus the angle-dependent pulse distortion has different impacts on the performance of IR-UWB communication. For IR-UWB system with BPSK modulation, the bit error rate is calculated for UWB receiver at different directions under situations of fixed signal-to-noise ratio or fixed noise power spectrum density in the channel. The results indicate that the angle-dependent pulse distortion of the UWB antenna has considerable effects on the performance of IR-UWB. The selection principle of the template pulse for IR-UWB communication system is also investigated.

Related Dissertations

  1. Beamforming Based on Limited Feedback in Multiple-Antenna Systems,TN919.72
  2. Research on All-Fiber Nanosecond Pulsed Yb-Doped Fiber Amplifier,TN248
  3. Research on Signal Code Modulation Based on Multi-Hop Network,TN761
  4. Research on Automatic Switching of Hybrid FSO/RF System Based on Atmospheric Channel,TN929.1
  5. The Research of the Community Technology in Integrative Electronic System,TN974
  6. The Study of Quasi-Orthogonal Space-Time Block Code in Mimo System,TN919.3
  7. Fast recursive algorithm for numerical differential polarization mode dispersion in optical pulse propagation under Application,TN929.11
  8. Based on WDM and optical packet network OCDM Performance,TN929.1
  9. Holographic antenna theory and experimental studies,O438.1
  10. Study on SFEC Code-Type for High-Speed Ultra Long-Haul Opitcal Communication Systems,TN929.1
  11. Research on Performance Improvement of TCP Protocol in Wireless and Wired Networks,TN915
  12. Research on Transmission Performance over 802.11-based Wireless Mesh Networks,TN925
  13. Study on Light Propagation in Resonant and Non-resonant Media,O431.2
  14. Research and Simulation on Anti-jamming Performance of Frequency-Hopping Communication System,TN914.41
  15. Fiber by stimulated Brillouin scattering slow light pulse distortion management research,O437.2
  16. Based on BPSK / DPSK leather satellite monitoring and control communication system software design,V474.21
  17. All-Fiber Pulsed Yb-Doped Fiber Amplifier,TN722
  18. Research of Key Technology of One-way Photonic Crystal Delay Waveguide and Silicon Based Broadband Anti-reflection Films,TN252
  19. Study on QS-CDMA Systems Based on Zero Correlation Zone Sequence,TN929.533
  20. Diameter antenna near-field mutual coupling simulation analysis,TN823
  21. Study on Photonic Generation of Microwave Signals,TN929.11

CLC: > Industrial Technology > Radio electronics, telecommunications technology > Wireless communications > Radio relay communications,microwave communications
© 2012 www.DissertationTopic.Net  Mobile