DocumentCode :
2520478
Title :
Very high data rate MB-OFDM UWB systems with transmit diversity techniques
Author :
Le, Ngoc Phuc ; Tran, Le Chung ; Safaei, Farzad
Author_Institution :
Sch. of Electr., Comput. & Telecommun. Eng., Univ. of Wollongong, Wollongong, NSW, Australia
fYear :
2012
fDate :
2-5 Oct. 2012
Firstpage :
508
Lastpage :
512
Abstract :
In this paper, the application of space time block codes in a very high data rate multiband-OFDM ultra-wideband (VHDR MB-OFDM UWB) system, where the Modified Dual Carrier Modulation (MDCM) scheme and Low Density Parity Check codes are deployed, is investigated. First, we present a new table-based mapping approach and derive soft-demapping expressions for the MDCM scheme. We then propose a space-time-frequency coded VHDR MB-OFDM UWB system by incorporating space time block codes into the conventional VHDR MB-OFDM UWB system. Numerical simulations of the system supporting a data rate of 1Gbps over the IEEE 802.15.3a channel models are implemented. The simulation results confirm the new mapping/demapping method as well as demonstrate the significant improvement in terms of packet error rate performance of the proposed system over the standard one.
Keywords :
OFDM modulation; diversity reception; parity check codes; space-time block codes; ultra wideband communication; IEEE 802.15.3a channel models; MDCM scheme; low density parity check codes; mapping-demapping method; modified dual-carrier modulation scheme; multiband orthogonal frequency division multiplexing ultrawideband system; packet error rate performance; soft-demapping expressions; space time block codes; space-time-frequency coded VHDR MB-OFDM UWB system; table-based mapping approach; transmit diversity technique; very-high-data rate MB-OFDM UWB systems; Channel models; Encoding; Modulation; OFDM; Parity check codes; Receiving antennas; Transmitting antennas; Alamouti code; IEEE 802.15.3a channel models; LDPC; MB-OFDM UWB; MDCM;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Communications and Information Technologies (ISCIT), 2012 International Symposium on
Conference_Location :
Gold Coast, QLD
Print_ISBN :
978-1-4673-1156-4
Electronic_ISBN :
978-1-4673-1155-7
Type :
conf
DOI :
10.1109/ISCIT.2012.6380952
Filename :
6380952
Link To Document :
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