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A quarter-rate 51Gb/s PAM4 CDR with decoded dual-NRZ outputs is presented for 400GbE optical transceivers. A baud-rate data-only sampling PD with zero-crossing integrating front-end is proposed to minimize the clock generation and distribution overhead, as well as improving the noise resilience under PAM4 low-SNR inputs. Measurement results show the CDR features 1.08ps RMS clock jitter, 3.4×10−9 PAM4...
The traditional approach of clearing and reallocating wireless spectrum is becoming increasingly difficult. This has led to much interest in new approaches for sharing spectrum among different users, including the three-tiered model currently being developed for the 3.5 GHz band. In this model, commercial service providers (SPs) are allowed to access government spectrum in one of two tiers: a Priority...
Motivated in part by the success of WiFi, there has been much interest in opening up new “prime” bands of spectrum for unlicensed use. Such bands can lower the cost for new wireless service providers to enter a market. The increased competition could in turn improve economic welfare. However, the openness of such spectrum can also lead to it becoming over congested, which in turn could deter investment...
In the big data era, massive news reports about the latest events are being published on the Web. To thoroughly understand an event, we have to read massive reports and keep clues in mind, which is very difficult and usually results in a one-sided interpretation. In this paper, we propose a multi-document summarization approach which summarizes reports of a particular social or political event automatically...
As one of the most important part of Computer Game, the search algorithm is the key to every chess game. This paper formulates a new search strategy based on the basic algorithm. It briefly introduces the theory and technique of hybrid search strategy and the dynamic control of the depth of the search strategy. Efforts are also made to establish a kind of search depth which is not limited to integers...
At present, the students in vocational and higher training colleges have a universal problem that they are not good at autonomous learning. Innovating traditional models of instruction and creating IT-based autonomous learning environment are imperative. It seems that establishing an e-Learning platform is an effective method. Claroline is regarded as one of the most popular open source learning management...
In this paper, after analyzing the requirement of aspect-oriented modeling, a meta-model based on UML extension profile for AOM is proposed, a framework of aspect-oriented modeling (AOMF) with UML is built, and a simple and feasible way to model the dynamic behaviors of aspect-oriented software is presented. Furthermore, a case study is presented to demonstrate the effectiveness and advantages of...
Quality prediction capability plays a crucial role in ensuring high quality of products as well as reliability of systems during manufacturing processes. In this study, the prediction reasoning mechanism based on fuzzy Petri nets (FPNs) is presented. The feasibility and validity of the reasoning mechanism are proved. A quality prediction model and reasoning process is presented for submerged arc welding...
This paper presents a backward reasoning approach based on fuzzy Petri nets (FPNs). This approach takes full advantage of the structural and behavioral properties of a FPN. It can identify middle places by a vector-computational manner rather than the conventional search way, improving inference efficiency. To reduce the complexity and scale of a FPN, man-machine interaction is introduced to it. It...
The conceptual model of visual saliency in human vision system has been employed in extracting salient features from images and multimedia data in the last decade. This paper proposes to employ the visual saliency for moving object detection. The crucial factor is to compute a saliency map such that visual attention can be performed. This paper proposes a new method for saliency map construction based...
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