Quasi-orthogonal space-time-frequency codes in MB-OFDM UWB

Authors:
Le Chung Tran;Alfred Mertins;Tadeusz A. Wysocki
Affiliations:
University of Luebeck, Ratzeburger Allee 160, Luebeck 23538, Germany;University of Luebeck, Ratzeburger Allee 160, Luebeck 23538, Germany;CEEN Department, Peter Kiewit Institute, University of Nebraska - Lincoln, 1110 South 67 St., Omaha, NE 68182-0572, USA
Venue:
Computers and Electrical Engineering
Year:
2010

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Abstract

Quasi-orthogonal space-time-frequency codes (QOSTFCs) will be examined in this paper to advance either data rate or error performance in recently proposed space-time-frequency coded multiband OFDM Ultra-wideband (STFC MB-OFDM UWB) communication systems. It is shown that QOSTFCs can provide significantly better error performance, compared to the conventional MB-OFDM UWB (without STFCs) and to the orthogonal STFCs (OSTFCs) of the same order, at the same data rate, without increasing the total transmission power. Another form of the enhancement would be that QOSTFCs can provide higher data rates with the same error performance, compared to OSTFCs.