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Please use this identifier to cite or link to this item: http://hdl.handle.net/1807/17224

Title: Widely-linear MMSE Receivers for Linear Dispersion Space-time Block-codes
Authors: Amirhossein, Shokouh Aghaei
Advisor: Konstantinos, Plataniotis
Department: Electrical and Computer Engineering
Keywords: multiple-input multiple-output communication systems
space-time coding techniques
linear dispersion (LD) codes
Issue Date: 26-Feb-2009
Abstract: Space-time coding techniques are widely used in multiple-input multiple-output communication systems to mitigate the effect of multipath fading in wireless channels. An important subset of space-time codes are linear dispersion (LD) codes, which are used for quasi-static Rayleigh flat fading channels when the channel state information (CSI) is only available at the receiver side. In this thesis, we propose a new receiver structure for LD codes. We suggest to use widely-linear minimum-mean-squared-error (WL-MMSE) estimates of the transmitted symbols in lieu of the sufficient statistics for maximum likelihood (ML) detection of these symbols. This structure offers both optimal and suboptimal operation modes. The structures of the proposed receivers in both modes are derived for general LD codes. As special cases, we study two important subsets of LD codes, namely orthogonal and quasi-orthogonal codes, and examine the performance of the proposed receivers for these codes.
URI: http://hdl.handle.net/1807/17224
Appears in Collections:Master
The Edward S. Rogers Sr. Department of Electrical & Computer Engineering - Master theses

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