Inter-carrier interference-free Alamouti-coded OFDM for cooperative systems with frequency offsets in non-selective fading environments

Title
Inter-carrier interference-free Alamouti-coded OFDM for cooperative systems with frequency offsets in non-selective fading environments
Author(s)
최권휴
Keywords
RECEIVER DESIGNS; CHANNELS; FEEDBACK; TIME; TRANSMISSION; PERFORMANCE
Issue Date
201110
Publisher
INST ENGINEERING TECHNOLOGY-IET
Citation
IET COMMUNICATIONS, v.5, no.15, pp.2125 - 2129
Abstract
A modified Alamouti-coded orthogonal frequency division multiplexing (OFDM) scheme is proposed for cooperative systems in non-selective fading environments. Even with the frequency offset between two distributed transmit antennas, the proposed scheme achieves ideal performance and full rate of Alamouti code. By switching subcarriers in the second OFDM symbol of each Alamouti-coded OFDM symbol pair after a simple-phase rotation in the first OFDM symbol, inter-carrier interference terms can be perfectly cancelled after a simple linear combining with the processing overhead of two times down-conversions and discrete Fourier transform (DFT) operations at each OFDM symbol.
URI
http://hdl.handle.net/YU.REPOSITORY/24413http://dx.doi.org/10.1049/iet-com.2011.0131
ISSN
1751-8628
Appears in Collections:
공과대학 > 모바일정보통신공학과 > Articles
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