THE UNIFICATION OF DIFFERENTIAL ENCODING AND DECODING ALGORITHM FOR VARIOUS SIGNALS

Many monographs point out that differential encoding and decoding is necessary for ef- fectual information transmission against phase ambiguity while seldom discuss the reason why phase ambiguity will emerge inevitably.Available algorithms are specially designed for certain modulation scheme;these algorithms cannot satisfy the requirement of soft-defined radio,which perhaps demands a uniform algorithm for different modulations.This paper proposes a new opinion on phase ambiguity from the view of probability.This opinion believes that modulating symbol sequence can affect,at optimum sampling epoch,the modulated waveform as oscillating carrier has done,and so the stochastic sequence leads to phase ambiguity.Based on a general signal model,this paper also puts forward a novel universal algorithm,which is suitable for different signals,even some new ones,by configuring several parameters.

Identification of differentially-expressed genes of rice in overlapping responses to bacterial infection by Xanthomonas oryzae pv.oryzae and nitrogen deficiency

Bacterial blight of rice caused by Xanthomonas oryzae pv.oryzae（Xoo） is one of high nitrogen（N） responsive diseases.Rice plants became more disease resistant with decreasing N suggesting that the crosstalk between disease resistance and N utilization pathways might exist.However,the co-regulatory components in such crosstalk have not been elucidated.Here,we comparatively analyzed the gene expression profiling of rice under Xoo inoculation,low N treatment,or a combination of both stresses,and identified the differentially-expressed genes（DEGs） in overlapping responses.These DEGs were involved in different biological processes,including innate immunity and nitrogen metabolism.The randomly-selected DEGs expression was validated by quantitative real-time PCR assays.Temporal expression of six genes from different functional categories suggested that N condition was the dominant factor when both stresses were present.These DEGs identified provide novel insights into the coordinated regulatory mechanism in biotic and abiotic stress responses in rice.

Power Analysis of Sensor Node Using Simulation Tool

Power consumption of sensor node is analyzed in this paper. In order to analyze the energy consumption, the node model is simulated using Proteus Software tool. The proposed sensor node’s power characteristics are measured by using different combinations of microprocessors and sensors. Using this, the energy consumption of the node is calculated. This is a cost-effective method and provides appropriate power model for specific applications.

High Differential Group Index of Dispersion Compensating Fibers for OCDMA Encoder/Decoder

We report the LPG pair device that can be used as a pulse duplicator or an OCDMA encoder/decoder. Due to the ring core region of dispersion compensating fiber (DCF), we can shorten the device length by a third and obtain surrounding insensitive LPG devices.