Title :
Double space-time transmit diversity for very high data rate MB-OFDM UWB systems
Author :
Le, Ngoc Phuc ; Tran, Le Chung ; Safaei, Farzad
Author_Institution :
Sch. of Electr., Univ. of Wollongong, Wollongong, NSW, Australia
Abstract :
In this paper, we investigate a multiband-orthogonal frequency division multiplexing ultra-wideband (MB-OFDM UWB) system with very high data rates (VHDR) of several gigabits per second (Gbps). We propose a DSTTD-based VHDR MB-OFDM UWB system by incorporating a double space-time transmit diversity (DSTTD) scheme into the conventional MB-OFDM UWB system. At the receiver, an efficient soft-demapper that takes into consideration the noise enhancement due to a zero-forcing equalization is developed. Numerical simulations of the proposed system at a very high data rate of 2.Gbps over the IEEE 802.15.3a channel models are implemented. The simulation results show that this system could achieve a very good performance in a low signal-to-noise ratio (SNR) region.
Keywords :
OFDM modulation; personal area networks; space-time block codes; ultra wideband communication; wireless channels; DSTTD-based VHDR MB-OFDM UWB system; IEEE 802.15.3a channel model; SNR region; double space-time transmit diversity; double space-time transmit diversity scheme; multiband-orthogonal frequency division multiplexing ultra-wideband system; numerical simulation; receiver; signal-to-noise ratio; very high data rate MB-OFDM UWB system; very high data rates; zero-forcing equalization; Detectors; MIMO; OFDM; Parity check codes; Receiving antennas; Signal to noise ratio; Alamouti code; D-STTD; IEEE 802.15.3a channel models; MB-OFDM UWB; MDCM;
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
DOI :
10.1109/ISCIT.2012.6381036
