DocumentCode :
2664842
Title :
Achieving Rate Two Space-Time-Frequency Codes for Multiband UWB-MIMO Communication Systems Using Rotated Multidimensional Modulation
Author :
Chusing, J. ; Wuttisittikulkij, L. ; Segkhoontod, S.
Author_Institution :
Dept. of Electr. Eng., Chulalongkorn Univ., Bangkok
fYear :
2007
fDate :
14-17 May 2007
Firstpage :
294
Lastpage :
301
Abstract :
In this paper, the rate-2 pcu STF coding schemes that can be efficiently implemented for use in multiband UWB-MIMO systems has been presented. These proposed STF codes are constructed based on the multi-dimensional constellation preceding so that the rotated version of the information symbols are spread across adjacent subcarriers and sent over M1 transmit antennas and Mb time periods, allowing effective exploitation of space, time and frequency diversity. The performance of these STF codes with two transmit antennas over the IEEE 802.15.SG3a channel models are compared at the same spectral efficiency. It is shown that our proposed codes outperform well known schemes found in the literature such as rate-1 SF codes, which guarantee full diversity. In addition, we devise a random interleaving method to incorporate into the proposed codes and the simulation results show that further gains can be achieved depending on the level of SNR.
Keywords :
MIMO communication; modulation; space-time codes; transmitting antennas; ultra wideband communication; IEEE 802.15.SG3a channel models; multiband UWB-MIMO communication; random interleaving; rotated multidimensional modulation; space-time-frequency codes; transmit antennas; Bandwidth; Diversity reception; Frequency diversity; Government; Interleaved codes; MIMO; Modulation coding; Multidimensional systems; OFDM modulation; Transmitting antennas;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Communication Networks and Services Research, 2007. CNSR '07. Fifth Annual Conference on
Conference_Location :
Frederlcton, NB
Print_ISBN :
0-7695-2835-X
Type :
conf
DOI :
10.1109/CNSR.2007.10
Filename :
4215526
Link To Document :
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