A low cost frequency-dependent (FD) I/Q imbalance self-compensation scheme is investigated in this paper. The direct conversion transmitters are widely used wireless systems. However, the unwanted image-frequencies and distortions inevitably introduced into system. This problem even severer wideband Therefore, accurate estimation compensation of crucial. current method based on external instruments or internal feedback path which introduces additional impairments expensive. paper proposes a...

This paper presents a novel fault diagnosis method for analog circuits using ensemble empirical mode decomposition (EEMD), relative entropy, and extreme learning machine (ELM). First, nominal faulty response waveforms of circuit are measured, respectively, then decomposed into intrinsic functions (IMFs) with the EEMD method. Second, through comparing IMFs IMFs, kurtosis entropy calculated each IMF. Next, feature vector is obtained circuit. Finally, an ELM classifier trained these vectors...

A novel generalized channel estimation scheme without the need of matrix inversion or iterative operations is proposed for single input output (SISO)/multiple (MISO) digital terrestrial multimedia broadcasting (DTMB) system, adopting time-domain synchronous orthogonal frequency division multiplexing technology. Simultaneously exploiting time domain correlation and constant coefficients imperfect autocorrelation m-sequence, a simple closed-form solution related to each tap can be acquired by...

A low cost frequency-dependent (FD) I/Q imbalance self-compensation scheme is investigated in this paper. The direct conversion transmitters are widely used wireless systems. However, the unwanted image-frequencies and distortions inevitably introduced into system. This problem even severer wideband Therefore, accurate estimation compensation of crucial. current method based on external instruments or internal feedback path which introduces additional impairments expensive. paper proposes a...

An Field Programmable Gate Array (FPGA) based embedded vision system capable of recognizing objects in real time is presented this paper. The proposed architecture consists multiple Intellectual Properties (IPs), which are used as a set complex instructions by an integrated 32-bit CPU Micro blaze. Each IP tailored specifically to meet the needs application and at same consume minimum FPGA logic resources. Integrating both hardware software on single chip, can achieve real-time performance...

In this paper, according to the multi-channel model of fractionally spaced linear equalizers, symbol-spaced adaptive decision feedback equalizers (ADFE) are extended (FSADFE). We applied FSADFE ATSC DTV receivers. The ADFE converges very slowly when channel presents severe characteristic that results in poor performance. can deal with DFE weakness and performance gain between them is considerable. This benefits receivers, especially some channels.

The influence of failure propagation is ignored in sample selection based on traditional testability demonstration experiment method. Traditional generally causes the omission some failures during and this phenomenon could lead to fearful risks usage because these will serious failures. This paper proposes a new method solve problem. First, uses directed graph ant colony optimization (ACO) obtain subsequent set (SFPS) model then we propose basis number SFPS. Compared with sampling plan, able...

With the development of release and retrieval technology for unmanned air vehicles (UAVs), aerial cluster platform composed carrier aircraft multiple rotor UAVs can be used as a new approach mobile emergency broadcasting operations. It indicates that we resolve paradoxical relationship between limited endurance large scale mission area. This paper proposes region scanning strategy based on UAV platform. The system achieve all-region in disaster ares, well audio video collection assessment rescue.

The climbing lane is a benefit to traffic safety through changing the flow characteristics of highway and avoiding overtaking maneuvers. This study was conducted by means driving simulator experiment examine effects on an upgrade existing two-lane rural in Yunnan province. To construct improve fidelity scenarios simulator, simulated flows under two special volumes with without were obtained from VISSIM. Thirty-two subjects selected drive test road simulator. On basis simulation results,...

Elastoplasticity computation is the analysis foundation of many complex mechanical behaviours such as fatigue, damage, and fracture. It impossible to realize real-time elastoplasticity based on serial computer. The form element stiffness matrix analyzed. A method that may BP neural networks proposed. computed using finite networks, respectively.DOI: http://dx.doi.org/10.5755/j01.mech.18.1.1279

A new fault modeling method using least‐square circle fitting ( LSCF ) for linear analog circuits is proposed in this paper. In method, Monte Carlo simulation used to obtain the output voltage values when parameter of one faulty component changed while those other components vary within their tolerance limits. All response every circuit statue are decomposed into real and imaginary parts on a complex field. Then, adopted match these data, yielding corresponding circular curve plane, which...

This research paper proposes a new fault diagnostic system for analog circuits. Local Mean Decomposition (LMD) is used to decompose every faulty response into set of product function (PF)signals, feature vector the built by calculation energy and kurtosis each PF. Adopting same method, all vectors are obtained. Then, these trained in learning quantization (LVQ) neural network. Via validating performance diagnosis with benchmark circuit comparing other methods, consequences prove that this...

This paper proposes a novel 2×1 Multiple Input Single Output (MISO) single-carrier broadcasting scheme. scheme is backward compatible to the existing Carrier (SC) systems. The performances of proposed system are compared with those (SISO) digital television terrestrial (DTTB) SC system, selective-gain-combination receiving diversity and MISO/SISO orthogonal frequency division multiplexing (OFDM) schemes. Simulation results show has satisfying BER performance but lower PAPR.

This paper details research undertaken by the simulation laboratory at Faculty of Transportation, Kunming University Science and Technology. The aim this is to compare relative effectiveness three kinds median markings in undivided highway tunnels. sample tunnels was selected from a real road mountainous area Yunnan province as test course reconstructed computers on driving simulator. Forty subjects participated experiment data were collected experiments. study found consistently superior...

Only the hardware system of EMS cannot guarantee reliability ECU because it is constrained by cost and other factors. So necessary to lean upon software complement improve engine. In this paper, we described structure engine methods processes reliability. And then, test using white-box testing method. During verification, check path verifying process same as real designing four pair different examinations. The results exams show that method satisfying need