Abstract/Details

ARQ techniques for MIMO communication systems


2006 2006

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Abstract (summary)

Multiple-input multiple-output (MIMO) communication systems employ multiple antennas at the transmitter and the receiver. Multiple antennas provide capacity gain and/or robust performance over single antenna communications. Traditional automatic-repeat-request (ARQ) techniques developed for single-input single-output (SISO) communication systems have to be modified in order to be employed in MIMO communication systems. In this dissertation, we propose and analysis some ARQ techniques for MIMO communication systems.

The basic retransmission protocols of ARQ, stop-and-wait (SW-ARQ), go-back- N (GBN-ARQ), and selective repeat (SR-ARQ), designed for SISO communication systems are generalized for parallel multichannel communication systems. The generalized ARQ protocols seek to improve the channel utilization of multiple parallel channels with different transmission rates and different packet error rates. The generalized ARQ protocols are shown to improve the transmission delay as well.

A type-I hybrid-ARQ error control is used to illustrate the throughput gain of employing ARQ error control into MIMO communication systems. With the channel information known at both the transmitter and the receiver, the MIMO channel is converted into a set of parallel independent subchannels. The performance of the type-I hybrid-ARQ error control is presented. Simulation results show the throughput gain of using an ARQ scheme in MIMO communication systems.

When the channel state information is unknown to the transmitter, error control codes that span both space and time, so-called space-time coding, are explored in order to obtained spatial diversity. As a consequence, the coding scheme used for ARQ error control has to be designed in order to consider coding across both space and time. In this dissertation, we design a set of retransmission codes for a type-II hybrid-ARQ scheme employing the multidimensional space-time trellis code as the forward error control code. A concept of sup-optimal partitioning of the (super-) constellation is proposed. The hybrid-ARQ error control scheme, consisting of the optimal code for each transmission, outperforms the hybrid-ARQ error control scheme, consisting of the same code for all transmissions.

Indexing (details)


Subject
Electrical engineering
Classification
0544: Electrical engineering
Identifier / keyword
Applied sciences; Automatic repeat request; Communication; MIMO; Multichannel
Title
ARQ techniques for MIMO communication systems
Author
Ding, Zhihong
Number of pages
101
Publication year
2006
Degree date
2006
School code
0022
Source
DAI-B 67/05, Dissertation Abstracts International
Place of publication
Ann Arbor
Country of publication
United States
ISBN
9780542687686
Advisor
Rose, Michael
University/institution
Brigham Young University
University location
United States -- Utah
Degree
Ph.D.
Source type
Dissertations & Theses
Language
English
Document type
Dissertation/Thesis
Dissertation/thesis number
3217012
ProQuest document ID
305353926
Copyright
Database copyright ProQuest LLC; ProQuest does not claim copyright in the individual underlying works.
Document URL
http://search.proquest.com/docview/305353926
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