| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2017: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2015: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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| Outline of Final Research Achievements |
We proposed and investigated the following contents to achieve high signal quality for the distorted high-speed signal detection.
(1)We investigated and clarified the effect of the cut-off frequency and number of quantization bits of analog-to-digital converters on the signal quality using the impulse response of a correlation receiver. (2)We proposed a wavelength-dispersion equalizing scheme that counteracts the signal degradation caused by residual dispersion. To counteract the signal degradation, this scheme uses optical correlation receivers and a distorted reference signal. (3)We proposed a transmission scheme for suppressing signal degradation due to optical nonlinear effects. To suppress inter-symbol interference, this scheme uses optical signals with short waveforms and excess bandwidths.
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