Structured Dispersion Matrices From Division Algebra Codes for Space-Time Shift Keying

Rajashekar, Rakshith and Hari, KVS and Hanzo, L (2013) Structured Dispersion Matrices From Division Algebra Codes for Space-Time Shift Keying. In: IEEE SIGNAL PROCESSING LETTERS, 20 (4). pp. 371-374.

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Abstract

We propose a novel method of constructing Dispersion Matrices (DM) for Coherent Space-Time Shift Keying (CSTSK) relying on arbitrary PSK signal sets by exploiting codes from division algebras. We show that classic codes from Cyclic Division Algebras (CDA) may be interpreted as DMs conceived for PSK signal sets. Hence various benefits of CDA codes such as their ability to achieve full diversity are inherited by CSTSK. We demonstrate that the proposed CDA based DMs are capable of achieving a lower symbol error ratio than the existing DMs generated using the capacity as their optimization objective function for both perfect and imperfect channel estimation.

Item Type:	Journal Article
Publication:	IEEE SIGNAL PROCESSING LETTERS
Publisher:	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Additional Information:	Copyright for this article belongs to the IEEE-INST LECTRICAL ELECTRONICS ENGINEERS INC, USA.
Keywords:	Coding gain; diversity; space-time block code; space-time shift keying; STBCs from division algebras
Department/Centre:	Division of Electrical Sciences > Electrical Communication Engineering
Date Deposited:	29 Apr 2013 11:54
Last Modified:	29 Apr 2013 11:54
URI:	http://eprints.iisc.ac.in/id/eprint/46455

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