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Unitary subgroup space-time codes using Bruhat decomposition and Weyl groups

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1 Author(s)
Konishi, T. ; Aichi Inst. of Technol., Japan

We propose a new class of unitary subgroups which is suitable to make differential unitary space-time codes for fast fading channels. These subgroups are derived from a double coset decomposition of unitary groups called Bruhat decomposition. We give some examples of the proposed unitary subgroup space-time codes for phase-shift keying (PSK), and display the performance for Rayleigh-fading channels. Finally, we describe how the new space-time codes are combined with coded modulation systems.

Published in:

Information Theory, IEEE Transactions on  (Volume:49 ,  Issue: 10 )

Date of Publication:

Oct. 2003

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