Title :
Interference canseller method using hierarchical OMF against concatenated sequence
Author :
Hachisuka, M. ; Sugimoto, Chika ; Kohno, Ryuji
Author_Institution :
Sch. of Eng., Yokohama Nat. Univ., Yokohama, Japan
Abstract :
DS-CDMA is one of schemes suitable for Inter-Vehicle Communication(IVC), but, when DS-CDMA is used, there is avoidable problem, Co-Channel Interference(CCI). OMF(Orthogonalizing Matched Filter) is considered suitable for ITS, because OMF can eliminate interference without knowing spread code of interference wave. However, also OMF has a problem. It is the number of taps in conventional OMF increases depending on spreading code length. So, in this study we propose Hierarchical OMF whichi is placed two OMFs hierarchically. Then, we show that proposal method has less taps than conventional OMF and interference rejection capability as well as conventional OMF.
Keywords :
automated highways; cochannel interference; code division multiple access; concatenated codes; interference suppression; matched filters; spread spectrum communication; CCI; DS-CDMA; ITS; IVC; cochannel interference; concatenated sequence; hierarchical OMF; interference canceller method; interference rejection capability; intervehicle communication; orthogonalizing matched filter; spreading code length; Accidents; Bit error rate; Correlation; Interference; Proposals; Vectors; Vehicles;
Conference_Titel :
ITS Telecommunications (ITST), 2012 12th International Conference on
Conference_Location :
Taipei
Print_ISBN :
978-1-4673-3071-8
Electronic_ISBN :
978-1-4673-3069-5
DOI :
10.1109/ITST.2012.6425145
