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News and Articles on Signal Distortion
Fujitsu Optical Components and Furukawa Electric to Jointly Develop Integrated Receivers for 40Gbps and 100Gbps Optical Networks Aug 19, 2009
The multi-level modulation using phase modulation or digital coherent detection is being introduced into 40Gbps and 100Gbps optical transmissions compared with traditional On-Off Keying (OOK), since these are not easily affected by signal distortion and noise caused by transmission fibers. The receiver part for DQPSK(2) modulation transmitting 2 bits per symbol consists of the delay line interferometer(3) and the balanced receivers(4), and the receiver part for DP-QPSK(5) modulation of digital... (JCN Network, Japan)
Synthetic Gene Circuit Allows Precise Dosing Of Gene Expression Mar 13, 2009
This gene "dosing effect" is achieved by installing a negative feedback loop in the synthetic gene circuit, a concept similar to signal distortion control in electronics, a team led by scientists at The University of Texas M. D. Anderson Cancer Center reports this week in the Online Early Edition of the Proceedings of the National Academy of Sciences. "To understand what a gene does, you need to change its expression and observe the results. Present methods do not allow close control of gene... (Science Daily)
Fujitsu Laboratories Develops Multi-Channel High-Speed Transceiver Circuit for High-Speed Blade Server Performance Feb 12, 2009
Taking advantage of the characteristics of two different kinds of equalizer circuits(3), Fujitsu Laboratories has developed a new receiver equalizer control method that minimizes signal distortion resulting from transmission losses, and has built it into the receiver equalizer circuit. This receiver equalizer circuit supports 10Gbps transmissions over multiple channels and obviates the need for multi-stage equalizer circuits, resulting in numerous benefits: faster speed, lower power consumption,... (JCN Network, Japan)
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