Title page for ETD etd-07112003-160013


Type of Document Master's Thesis
Author Chi, Xuan
Author's Email Address xchi@vt.edu
URN etd-07112003-160013
Title The Impact of Channel Estimation Error on Space-Time Block and Trellis Codes in Flat and Frequency Selective Channels
Degree Master of Science
Department Electrical and Computer Engineering
Advisory Committee
Advisor Name Title
Buehrer, Richard Michael Committee Chair
Annamalai, Annamalai Jr. Committee Member
Woerner, Brian D. Committee Member
Keywords
  • MIMO
  • Maximal Ratio Combining
  • Rayleigh Fading
  • Space-Time coding
  • Flat and frequency selective fading
  • Channel estimation
  • Diversity
  • Trellis Coding
Date of Defense 2002-12-19
Availability unrestricted
Abstract
Recently multiple antenna systems have received significant attention from researchers as a means to improve the energy and spectral efficiency of wireless systems. Among many classes of schemes, Space-Time Block codes (STBC) and Space-Time Trellis codes (STTC) have been the subject of many investigations.

Both techniques provide a means for combatting the effects of multipath fading without adding much complexity to the receiver. This is especially useful in the downlink of wireless systems. In this thesis we investigate the impact of channel estimation error on the performance of both STBC and STTC.

Channel estimation is especially important to consider in multiple antenna systems since (A) for coherent systems there are more channels to estimate due to multiple antennas and (B) the decoupling of data streams relies on correct channel estimation. The latter effect is due to the intentional cross-talk introduced into STBC.

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