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Green telecommunication is becoming an important part in designing the wireless communication systems. Small Cell Network (SCN) is considered as one of the most promising techniques in the future cellular networks. In order to reduce the high power consumption caused by dense deployment of small base stations (BSs), we first propose a new decentralized precoding algorithm which aims to maximize the...
Node localization is one of the most challenging issues in large scale sensor networks. Few bearing-only based methods are used to locate nodes in a large scale system. Existing bearing-only based Semidefinite Programming (BOSDP) method consumes a lot of energy and it may not yield good results if the beacons are placed randomly. Moreover, the BOSDP approach cannot estimate the locations and orientations...
Uncooled infrared detectors are applied widely in both civilian and military. Recently, novel microbolometers composing of two planes located at different levels were proposed to improve the performance of the detectors. In this paper, such two-layer microbolometers were simulated by finite element analysis. Results reveal that when SiO2 film is utilized as the isolating and supporting material located...
In the reliability prediction of the product with long life and high reliability, the step stress accelerated degradation test (SSADT) is commonly applied. With the motivation of predicting the product reliability most precisely, the problem of optimizing the test plans has drawn a lot of attentions in the application of SSADT. In this paper, the drift Brownian motion is selected as the degradation...
The characteristic impedance of L-type and T-type networks are investigated for the distributed amplifier (DA) design respectively. The analysis shows that the L-type network has better frequency characteristics than the T-type one. Two distributed amplifiers with L- and T-type network are designed with 2-μm GaAs HBT process for comparison. The simulation results demonstrate that the DA with L-type...
A 50MHz-1GHz low noise and high linearity amplifier monolithic-microwave integrated-circuit (MMIC) is presented in this article. The circuit was designed with 0.15um InGaAs PHEMT process. The ADS simulation results showed it gave excellent Noise Figure of 1.36dB and high linearity up to 17dBm IIP3 with 75Ohm systems. It is especially suitable in the applications such as cellular telephone base station...
Inverted pendulum is one of the most important plants to be researched to investigate the validity of various control strategies, it's a highly nonlinear, unstable system. In this paper, the friction force and viscous moment are considered in the modeling of the plant, the sliding mode control method is applied to the design of the control system of inverted pendulum, both traditional sliding mode...
This paper presents a comprehensive semiconductor optical device (SOD) simulation tool produced by object-oriented programming (OOP). First, the SOD is assumed to be composed of the elementary cell which is abstracted from semiconductor optical amplifiers. Meanwhile, some auxiliary classes and inheritance hierarchies are defined. Besides, the numerical and transaction algorithms with high performance...
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