Title :
Joint Doppler-Frequency Diversity for OFDM Systems Using Hybrid Interference Cancellation in Time-Varying Multipath Fading Channels
Author :
Song, Hyungjoon ; Kim, Jihyung ; Nam, Sangho ; Yu, Takki ; Hong, Daesik
Author_Institution :
Center for Inf. Technol. of Yonsei Univ., Seoul
Abstract :
In time-varying fading channels, orthogonal frequency division multiplexing systems suffer severe performance degradation caused by interchannel interference (ICI). We utilize this ICI as a source of diversity by using a new ICI-cancellation algorithm and Wiener filter. The proposed algorithm can support joint Doppler-frequency diversity gain. In addition, both the computational complexity and total detection time are reduced.
Keywords :
OFDM modulation; Wiener filters; adjacent channel interference; diversity reception; fading channels; interference suppression; multipath channels; time-varying channels; OFDM systems; Wiener filter; computational complexity; hybrid interference cancellation; interchannel interference; joint Doppler-frequency diversity; orthogonal frequency division multiplexing systems; time-varying multipath fading channels; Hybrid interference cancellation (HIC); OFDM; Wiener filter; Wiener filter (WF); hybrid interference cancellation; joint Doppler-frequency diversity; orthogonal frequency division multiplexing (OFDM); parallel interference cancellation; parallel interference cancellation (PIC); successive interference cancellation;
Journal_Title :
Vehicular Technology, IEEE Transactions on
DOI :
10.1109/TVT.2007.905594
