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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