Single Carrier Modulation with Frequency Domain Equalization for Intensity Modulated-Direct Detection Channels with Intersymbol Interference
Date Issued
2006
Date
2006
Author(s)
Hsieh, Chia-chen
DOI
en-US
Abstract
In this thesis, we examine single carrier modulation with frequency domain equalization (SC-FDE) for optical communication systems using intensity modulation with direct detection (IM/DD) in the presence of additive white Gaussian noise. SC-FDE is a technique whose processing is quite similar to that of OFDM. Unlike OFDM, however, SC-FDE is compatible with IM/DD channels because it does not require the transmission of a strong dc. For an IM/DD channel, at high data rate regime, the effect of intersymbol interference (ISI) starts to dominate system performance. Inthis paper, we examine the use of SC-FDE and pulse position modulation (PPM) to combat ISI for IM/DD channels. Such a system enjoys the average power efficiency of PPM and the low complexity equalization of SC-FDE. We analyze the bit error performance of SC-FDE and compare it with a few known techniques.
Subjects
紅外線
頻域補償
正交分頻多工
單載波調變
Infrared
Equalization
SCM
FDE
OFDM
IM/DD
Type
thesis
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