Title :
Adjacent-channel, Co-channel and Intersymbol Interference Suppression for Carrier Interferometry based One-cell Reuse Single-carrier TDMA Systems
Author :
Sritiapetch, Chantima ; Sampei, Seiichi
Author_Institution :
Osaka Univ., Osaka
Abstract :
This paper proposes an interference suppression technique using edge-removal filter, nulling filter and turbo equalizer for carrier interferometry (CI) based one-cell reuse single-carrier time division multiple access (TDMA) systems. In the proposed scheme, CI technique is employed to generate CI signal which is equivalent to single-carrier signal with its roll-off factor of zero. At the receiver, received CI signal is transformed into frequency-domain signal via fast Fourier transform (FFT). Adjacent-channel interference (ACI) from the same cell is first suppressed by the edge-removal filter and then co-channel interference (CCI) from adjacent cell is suppressed by applying frequency-domain nulling filter. After that, a soft canceller with minimum mean square error (SC/MMSE) based turbo equalizer is utilized to compensate for channel induced intersymbol interference (ISI) as well as extra ISI produced by the edge-removal filter and nulling filter. Computer simulation confirms that interference can be suppressed with the proposed scheme.
Keywords :
adjacent channel interference; equalisers; fast Fourier transforms; filtering theory; intercarrier interference; interference suppression; interferometry; time division multiple access; adjacent-channel interference suppression; carrier interferometry; co-channel interference suppression; computer simulation; edge-removal filter; fast Fourier transform; frequency-domain signal; intersymbol interference suppression; minimum mean square error; nulling filter; one-cell reuse single-carrier time division multiple access systems; soft canceller; turbo equalizer; Equalizers; Fast Fourier transforms; Filters; Interchannel interference; Interference suppression; Interferometry; Intersymbol interference; Radiofrequency interference; Signal generators; Time division multiple access; carrier interferometry; edge-removal filter; interference suppression; nulling filter; turbo equalizer;
Conference_Titel :
Mobile and Wireless Communications Summit, 2007. 16th IST
Conference_Location :
Budapest
Print_ISBN :
963-8111-66-6
Electronic_ISBN :
963-8111-66-6
DOI :
10.1109/ISTMWC.2007.4299259