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The cooperation of cells in biological systems is similar to that of agents in cooperative multi-agent systems. Research findings in multi-agent systems literature can provide valuable inspirations to biological research. The well-coordinated states in cell systems can be viewed as desirable social norms in cooperative multi-agent systems. One important research question is how a norm can rapidly...
As a kind of effective way to improve the utilization ratio of the spectrum, more and more attention have been paid to the cognitive radio. This paper proposes an improved cognitive radio spectrum sharing model. In this model, the primary users provide idle spectrum to the secondary users. Secondary users have to pay when they share available spectrum with primary users while using the spectrum. The...
A novel broadband single-layer aperture coupled patch antenna is proposed. A simple patch geometry that is based on a rectangular patch with two symmetry arms fed by aperture coupled is introduced in this paper. A new resonant mode is excited using this novel patch structure. The results shows that the bandwidth is 4.1 to 6.3 GHz (S11<;-10dB), larger than 40%. The gain is achieved to 6.6dBi. The...
In this paper, two new cable fault detection and location on-line methods — Sequence Time Domain Reflectometry method (STDR) and Spread Spectrum Time Domain Reflectometry method (SSTDR) were introduced and analyzed. An improved frequency correlation algorithm for real-valued sequences was introduced to cable fault detection and location online; it greatly reduced the time and the storage consumption...
TD-SCDMA terminal is a hot research in China in recent years. To solve a problem that SDR (Software Defined Radio) hardware resource is insufficient, a system resource allocation algorithm of TD-SCDMA terminal based on SDR platforms was proposed. Several SDR hardware platforms were analyzed, and TD-SCDMA terminal processing chains resource model was established. Each function module of the TD-SCDMA...
Now the QoS demand is ordinary in network device. This paper introduces some key technology to implementation a QoS scheme in embedded system. Base on the DiffServ, this paper discusses the multilayer data stream module in detail.
Based on the quasi-self-consistent field nonlinear theory the simulation software GKER (gyroklystron emulator) was developed for the calculations and simulation of the interaction between electron beam and RF field in gyroklystrons using the union programming technique. This paper mainly discusses the simulation results of the resonators designed for the experimental gyroklystrons using GKER.
Digital storage oscilloscope can only acquire a small number of sampling points when it works in high-speed, in order to resume the waveform perfectly, we must interpolate some points between the sampling points (waveform reconstruction). The paper describes the basic sine interpolation algorithm, window function is introduced based on the actual application of the sine interpolation, and a computer...
Traditional security approaches are not sufficient to deal with the protection and survivability of highly distributed information systems operating in unbounded networks. In view of the deficiencies of the essential servicespsila self-recovering when the survivable system is not available, an efficient self-adjusting reconfiguration framework on system survivability is presented based on the service-level...
The broadband access network of EPON can supply high bandwidth to each user. It also can support multicast function well. EPON is the most important access way to vide multicast service. Apply multicast in EPON, multiple users in the same group can share a stream and can improve the efficiency of downstream band. The paper introduces an method to carrying IPTV in EPON.
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