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IEICE Transactions on Communications 2008 E91-B(4):1185-1189; doi:10.1093/ietcom/e91-b.4.1185
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Copyright © 2008 The Institute of Electronics, Information and Communication Engineers

Regular Section -- Letters -- Wireless Communication Technologies

Full-Rate STBCs from Coordinate Interleaved Orthogonal Designs in Time-Selective Fading Channels

Hoojin LEE1, Jeffrey G. ANDREWS1 and Edward J. POWERS1

1 The authors are with the Wireless Networking and Communications Group, Department of Electrical & Computer Engineering, The University of Texas at Austin, Austin, TX, 78712-0240, USA. E-mail: Hoojin.Lee{at}freescale.com, 2 Presently, with Freescale Semiconductor, Inc., Austin, TX, 78729, USA.


  Abstract

Space-time block codes (STBCs) from coordinate interleaved orthogonal designs (CIODs) have attracted a great deal of attention due to their full-diversity and linear maximum likelihood (ML) decodability. In this letter, we propose a simple detection technique, particularly for full-rate STBCs from CIODs to overcome the performance degradation caused by time-selective fading channels. Furthermore, we evaluate the effects of time-selective fading channels and imperfect channel estimation on STBCs from CIODs by using a newly-introduced index, the results of which demonstrate that full-rate STBCs from CIODs are more robust against time-selective fading channels than conventional full-rate STBCs.

Key Words: wireless communications, space-time block codes (STBCs), coordinate interleaved orthogonal designs (CIODs), channel estimation errors, time-selective fading channel

Manuscript received September 19, 2007. Manuscript revised November 22, 2007.


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