Block transmission with linear frequency domain equalization for dispersive optical channels with direct detection

Block transmission with frequency-domain equalization (FDE) has been proven as an attractive alternative to orthogonal frequency division multiplex (OFDM) for radio frequency (RF) communication, especially at 60 GHz. In this paper, we show that FDE can be advantageously applied for optical transmiss...

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Bibliographic Details
Main Authors: Wolf, M, Grobe, L, Rieche, M R, Koher, A, Vucic, J
Format: Conference Proceeding
Language:English
Subjects:
Bandwidth
Dispersion
fractionally-spaced equalization
Frequency domain analysis
frequency-domain equalization
Mean square error methods
minimum mean square error
OFDM modulation
optical communication
Optical distortion
Optical filters
Optical modulation
Optical sensors
Radio frequency
symbol-spaced equalization
zero forcing
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Summary:Block transmission with frequency-domain equalization (FDE) has been proven as an attractive alternative to orthogonal frequency division multiplex (OFDM) for radio frequency (RF) communication, especially at 60 GHz. In this paper, we show that FDE can be advantageously applied for optical transmission over dispersive channels as well, and in particular, in direct-detection systems. We review the optimal coefficients for zero forcing (ZF) and minimum mean square error (MMSE) equalization - both in the case of symbol-spaced and fractionally-spaced sampling, and present promising results for an illustrative visible-light communications (VLC) link based on non-return-to-zero (NRZ) on-off keying (OOK).
ISSN:2162-7339
DOI:10.1109/ICTON.2010.5549129