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- W1598692890 abstract "In indoor optical wireless communication systems with intensity modulation (IM) and direct detection (DD), diffuse links could be established through reflecting. For such a case, line-of-sight does not exist between the transmitter and receiver, and the channel delay spread will be large. The dispersion of the channel might cause inter-symbol interference. Also, the transmitted signal must be nonnegative. Thus most modulation schemes for radio communications cannot be used directly for such a system. This paper develops a new multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) IM/DD systems: real and imaginary coefficients separation (RIS) system. Two transmit data streams require only one inverse fast Fourier transform (IFFT) block, resulting in a low computational complexity. Compared with traditional OFDM based schemes, the RIS scheme achieves a better BER performance and requires fewer IFFT blocks at the transmitter. The transmitter architecture and receiver algorithm are analyzed in detail. BER performance and simulation results are provided." @default.
- W1598692890 created "2016-06-24" @default.
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- W1598692890 date "2015-06-01" @default.
- W1598692890 modified "2023-09-24" @default.
- W1598692890 title "Coefficients separation MIMO-OFDM optical wireless communication system in diffuse fading channels" @default.
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- W1598692890 doi "https://doi.org/10.1109/icc.2015.7249138" @default.
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