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Fully-diverse multi-antenna space-time codes based on Sp(2)

Jing, Yindi and Hassibi, Babak (2002) Fully-diverse multi-antenna space-time codes based on Sp(2). In: Conference Record of the Thirty-Sixth Asilomar Conference on Signals, Systems and Computers, 2002. Vol.2. IEEE , Piscataway, NJ, pp. 1142-1146. ISBN 0-7803-7576-9.

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Fully-diverse constellations, i.e., a set of unitary matrices whose pairwise differences are nonsingular, are useful in multi-antenna communications, especially in multi-antenna differential modulation, since they have good pairwise error properties. Group theoretic ideas, especially fixed-point-free (FPF) groups, have been used to design fully-diverse constellations of unitary matrices. We construct four-transmit-antenna constellations appropriate for differential modulation based on the symplectic group Sp(2). These can be regarded as extensions of Alamouti's (1998) celebrated two-transmit-antenna orthogonal design which can be constructed from the group Sp(1). We further show that the structure of the code tends itself to efficient maximum likelihood (ML) decoding via the sphere decoding algorithm. Finally, the performance of the code is compared with existing methods including Alamouti's scheme, Cayley differential unitary space-time codes and group-based codes.

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Additional Information:© 2002 IEEE. Thanks to AFOSR for MURI "Mathematical Infrastructure for Robust Virtual Engineering" and URI "Protecting Infrastructures from Themselves" and Caltech's Lee Center for Advanced Networking for funding.
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Air Force Office of Scientific Research (AFOSR)UNSPECIFIED
Caltech's Lee Center for Advanced NetworkingUNSPECIFIED
Record Number:CaltechAUTHORS:20150227-071829673
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:55297
Deposited By: Shirley Slattery
Deposited On:27 Feb 2015 19:01
Last Modified:10 Nov 2021 20:44

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