Robust High Throughput Space-Time Block Coded MIMO Systems (2007)

View/ Open
Type of Content
Theses / DissertationsThesis Discipline
Electrical EngineeringDegree Name
Doctor of PhilosophyPublisher
University of Canterbury. Electrical and Computer EngineeringCollections
Abstract
In this thesis, we present a space-time coded system which achieves high through- put and good performance with low processing delay using low-complexity detection and decoding. Initially, Hamming codes are used in a simple interleaved bit-mapped coded modulation structure (BMCM). This is concatenated with Alamouti's or- thogonal space-time block codes. The good performance achieved by this system indicates that higher throughput is possible while maintaining performance. An analytical bound for the performance of this system is presented. We also develop a class of low density parity check codes which allows flexible "throughput versus performance" tradeoffs. We then focus on a Rate 2 quasi-orthogonal space-time block code structure which enables us to achieve an overall throughput of 5.6 bits/symbol period with good performance and relatively simple decoding using iterative parallel interference cancellation. We show that this can be achieved through the use of a bit-mapped coded modulation structure using parallel short low density parity check codes. The absence of interleavers here reduces processing delay significantly. The proposed system is shown to perform well on flat Rayleigh fading channels with a wide range of normalized fade rates, and to be robust to channel estimation errors. A comparison with bit-interleaved coded modulation is also provided (BICM).
Keywords
Wireless Systems; space-time coding; interference cancellation; low density parity check codes; multiple input; multiple output (MIMO) systemsRights
Copyright Nicholas PauRelated items
Showing items related by title, author, creator and subject.
-
Robust High Throughput Space Time Block Codes Using Parallel Interference Cancellation
Pau, N.S.J.; Taylor, D.P.; Martin, P.A. (University of Canterbury. Electrical and Computer Engineering, 2008)We present a space-time coded system which achieves high throughput and good performance using low- complexity detection and decoding. We focus on a Rate 2 quasi- orthogonal space-time block code structure which enables ... -
From theory to practice: An overview of MIMO space-time coded wireless systems
Gesbert, D.; Shafi, M.; Shiu, D-S.; Smith, P.J.; Naguib, A. (University of Canterbury. Electrical and Computer Engineering., 2003)This paper presents an overview of recent progress in the area of multiple-input–multiple-output (MIMO) space–time coded wireless systems. After some background on the research leading to the discovery of the enormous ... -
Rate 2 Quasi-Orthogonal Space Time Block Codes using Parallel Interference Cancellation
Pau, N.S.J.; Taylor, D.P.; Martin, P.A. (University of Canterbury. Electrical and Computer Engineering, 2006)In this paper, we focus on an advanced space-time system using a rate 2 quasi-orthogonal space-time block code which enables us to achieve very good performance for an overall throughput of up to 4.3 bits/s/Hz. This is ...