Space-Time Block Codes for Quasi-synchronous Cooperative Diversity

Li and Xia have recently investigated the design of space-time codes that achieve full spatial diversity for quasi-synchronous cooperative communications. They show that certain of the binary space-time trellis codes derived from the Hammons-El Gamal stacking construction are delay tolerant and can...

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Bibliographic Details
Main Authors: Hammons, A.R., Conklin, R.E.
Format: Conference Proceeding
Language:English
Subjects:
Block codes
Convolutional codes
Delay
MIMO
Propagation losses
Receiving antennas
Relays
Space time codes
Stacking
Transmitting antennas
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Summary:Li and Xia have recently investigated the design of space-time codes that achieve full spatial diversity for quasi-synchronous cooperative communications. They show that certain of the binary space-time trellis codes derived from the Hammons-El Gamal stacking construction are delay tolerant and can be used in the multilevel code constructions by Lu and Kumar to produce delay tolerant space-time codes for PSK and QAM signaling. In prior work, the first author has developed generalizations of the Lu-Kumar construction for more general AM-PSK constellations that also preserve the delay tolerance of the underlying constituent codes and exhibited a new construction of short block codes that achieve significant levels of delay tolerance. Use of space-time block codes (STBC) of short length in the Li-Xia transmission framework results in a significant loss of rate. We present generalizations of that framework that make short STBC a potentially attractive option for quasi-synchronous cooperative diversity
ISSN:2155-7578
2155-7586
DOI:10.1109/MILCOM.2006.302282