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A novel phase reconfigurable synthesized transmission line is proposed in this paper. By utilizing quasi-lumped elements and varactor diodes, the synthesized line functions as a 1-bit phase shifter by switching its electrical length between two states; the characteristic impedance, meanwhile, is kept unaltered. The design concept, circuit model, and performance are carefully investigated and discussed...
A novel phase reconfigurable synthesized transmission line is proposed in this paper. By utilizing quasilumped elements and varactor diodes, the synthesized line functions as a 1-bit phase shifter by switching its electrical length between two states; the characteristic impedance, meanwhile, is kept unaltered. The design concept, circuit model, and performance are carefully investigated and discussed...
This paper concentrates on the issue of finite-time controller design for periodic systems with random transmission delays over networked control systems. The definitions of stochastic finite-time stability and finite-time boundedness are respectively given at the beginning of this paper. Then, based on the Lyapunov function and the linear matrix inequalities (LMIs) technique, the sufficient conditions...
Recently, wireless caching techniques have been studied to satisfy lower delay requirements and offload traffic from peak periods. By storing parts of the popular files at the mobile users, users can locate some of their requested files in their own caches or the caches at their neighbors. In the latter case, when a user receives files from its neighbors, device-to-device (D2D) communication is enabled...
In this paper, throughput of hybrid automatic repeat request (HARQ) schemes is studied in the presence of Markovian data arrivals and statistical queuing constraints. In particular, two queuing models are considered. Specifically, when outage occurs, the transmitter keeps the packet, lowers its priority, and attempts to retransmit it later in the first queue model while the packet is discarded and...
In this paper, we develop a scheduling algorithm for device-to-device (D2D) cellular networks with deadline constraints via the convex delay cost approach. At the beginning of each time slot, the algorithm allocates all available channels to the users, and each user can choose to transmit in different modes. After characterizing the transmission rates and defining the utility for each possible scheduling...
We describe design techniques, calibration method, and measurement results of an all-digital temperature sensor in 28 nm CMOS. To deal with the issue of Vcc being near the zero-temperature-coefficient point, a new delay cell with much improved temperature sensitivity is proposed. Adaptive 1-point (1P) calibration is proposed to reduce the serious impact due to process variations, while without increasing...
The increasing demand on higher transmission speed and shorter delay in wired networks becomes critical in recent communication networks. However, the capacity of transmission link is limited by the method of transmission. In this paper, aiming at the situation of large scale networks, an overview of the network optimization based on big data and traffic prediction is given in our proposed work. In...
To allow mobile devices to conserve energy, IEEE 802.11 standard specifies a power save mode (PSM). A station in PSM, i.e. a PSM-STA, will wake up at a predefined listen interval (LI) to receive frames buffered at the access point (AP) while it is sleeping. When a PSM-STA wakes up to receive a beacon and finds that there are no buffered frames, the PSM-STA experiences an unnecessary wakeup. In case...
The fusion of artificial fish algorithm and genetic algorithm is proposed to optimize the flight scheduling of two-runway in large airport in which the problems are difficult, inefficient and serious flight delays. First, in this paper, the shortcomings of artificial fish algorithm and genetic algorithm are analyzed, and combing the advantages of two algorithms, optimization algorithm is proposed...
As the flight scheduling has always been a key technology which reduces flight delays and costs. Rational and efficient flight sorting method not only can effectively improve the utilization of the airport, reduce flight delay, but also ensure flight safety and reduce the incidence of sudden accidents. Firstly, we studied the application of ant colony algorithm in flight sorting, and proposed a new...
Automatic speaker gender identification based on the speech feature has important application in the audio processing and analysis field. In order to overcome the conventional linear parameters in the speaker feature lack of gender characteristics, in this paper, nonlinear parameters such as the fractal dimension and fractal complexity as feature space effective compensations are presented. Firstly,...
To the networked robot system (NRS) that drops packets randomly, we considered the problem of optimal linear quadratic Gaussian (LQG) control and analyzed the stability of a NRS by modeling it. By presenting a mathematical model based on a packet-dropped setting, we extended the familiar LQG separation principle, proposed an optimal algorithm irrespective of the packet drop pattern of the networked...
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