TY - GEN
T1 - Unitary differential space-time-frequency codes for MB-OFDM UWB
AU - Tran, L. C.
AU - Mertins, A.
AU - Dutkiewicz, E.
AU - Huang, X.
N1 - Copyright 2009 IEEE. Reprinted from Communications and Information Technology, 2009. ISCIT 2009. 9th International Symposium on : Songdo-iFEZ ConvensiA, Incheon, Korea : September 28-30, 2009. This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of Macquarie University’s products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to [email protected]. By choosing to view this document, you agree to all provisions of the copyright laws protecting it.
PY - 2009
Y1 - 2009
N2 - In a multiple-input multiple-output (MIMO) multiband orthogonal frequency division multiplexing (MB-OFDM) ultra-wideband (UWB) system, coherent detection where the channel state information (CSI) is assumed to be exactly known at the receiver requires the transmission of a large number of symbols for channel estimation, thus reducing the bandwidth efficiency. This paper examines the use of unitary differential space-time frequency codes (DSTFCs) in MB-OFDM UWB, which increases the system bandwidth efficiency due to the fact that no CSI is required for differential detection. The proposed DSTFC MB-OFDM system would be useful when the transmission of multiple channel estimation symbols is impractical or uneconomical. Simulation results show that the application of DSTFCs can significantly improve the bit error performance of conventional differential MB-OFDM system (without MIMO).
AB - In a multiple-input multiple-output (MIMO) multiband orthogonal frequency division multiplexing (MB-OFDM) ultra-wideband (UWB) system, coherent detection where the channel state information (CSI) is assumed to be exactly known at the receiver requires the transmission of a large number of symbols for channel estimation, thus reducing the bandwidth efficiency. This paper examines the use of unitary differential space-time frequency codes (DSTFCs) in MB-OFDM UWB, which increases the system bandwidth efficiency due to the fact that no CSI is required for differential detection. The proposed DSTFC MB-OFDM system would be useful when the transmission of multiple channel estimation symbols is impractical or uneconomical. Simulation results show that the application of DSTFCs can significantly improve the bit error performance of conventional differential MB-OFDM system (without MIMO).
UR - http://www.scopus.com/inward/record.url?scp=74549142920&partnerID=8YFLogxK
U2 - 10.1109/ISCIT.2009.5341104
DO - 10.1109/ISCIT.2009.5341104
M3 - Conference proceeding contribution
AN - SCOPUS:74549142920
SN - 9781424445219
SP - 1161
EP - 1166
BT - 2009 9th International Symposium on Communications and Information Technology, ISCIT 2009
PB - Institute of Electrical and Electronics Engineers (IEEE)
CY - Piscataway, N.J
T2 - 2009 9th International Symposium on Communications and Information Technology, ISCIT 2009
Y2 - 28 September 2009 through 30 September 2009
ER -