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There are various leak test methods used to verify the integrity of seals for underwater hardware; these methods have a wide range of sensitivity and cost. Helium leak testing with the use of a high vacuum mass spectrometer leak detector provides the greatest sensitivity; however, in more complex sealing systems, the utility of the results is entirely dependent upon the test configuration and method...
Prognostic diagnosis is desirable for commercial core router systems to ensure early failure prediction and fast error recovery. The effectiveness of prognostic diagnosis depends on whether anomalies can be accurately detected before a failure occurs. However, traditional anomaly detection techniques fail to detect “outliers” when the statistical properties of the monitored data change significantly...
By adopting multiple-input multiple-output (MIMO) technique, the spectral efficiency and data rate of wireless communication systems can be highly improved. To fully take the advantages of MIMO, belief prorogation (BP) detection methods are considered as a way in balancing the hardware complexity and error performance. Also with BP methods, polar code, which has been adopted by 3GPP eMBB control channel,...
In this paper, we present the first multilevel implementation of the Harris-Stephens corner detector and the ORB feature extractor running on FPGA hardware, for computer vision and robotics applications. ORB is a fundamental component of many robotics applications, and requires significant computation. The design has been validated both in behavioural simulation and in implementation on an Arria V...
To increase the security of intrusion detection system, generalized structure of highly performance adaptive system for cyber attacks detection was developed. To improve its robustness, methods of artificial intelligence were proposed. Neural immune detectors were used as the main tool for identifying cyber attacks. These detectors for cyber attacks identification and classification and other vulnerable...
Sparse Code Multiple Access (SCMA) is a promising multiple access technology candidate for 5G wireless communication systems. The high detection complexity is its bottleneck. Stochastic computation is an ultra-low complexity digital signal processing technique in which probabilities are represented and processed with streams of random bits. In this paper, we propose a novel low complexity stochastic...
It is known that by extracting log-likelihood ratio (LLR) values from the received MIMO signals, a MIMO detector is able to exchange a posteriori soft information with a channel decoder to improve the error performance. A minimum mean-square error with parallel interference cancellation (MMSE-PIC) detector is considered to be a practical MIMO detector, but the computational complexity for the LLR...
This paper presents the proposal of a new front-end readout electronics (RO) architecture for the ALICE Charged-particle Veto detector (CPV) located in PHOton Spectrometer (PHOS), and for the High Momentum particle IDentification detector (HMPID). With the upgrades in hardware typology and proposed new readout scheme in FPGA design, the RO system shall achieve at least five times the speed of the...
Heavy hitter detection is an important task in many network security and traffic measurement applications. In this work, we implement a heavy hitter detection accelerator based on the Count-Min sketch algorithm inside the NetFPGA-10G OpenFlow switch. By using only a small amount of extra memory and logic resources, the OpenFlow switch is capable of detecting the heavy hitter flows accurately without...
With better spectral efficiency, multiple-input and multiple-output (MIMO) systems have drawn increasing attentions. Due to its near-optimal performance, K-best algorithm has been widely adopted for MIMO detection. To the best knowledge of the authors, this paper first proposes a joint detection and decoding (JDD) method for MIMO with low-density parity-check (LDPC) codes. By pruning the searching...
The sensitivity of a recently proposed spike detector exploiting the volatile properties of memristive device is optimised. A 200 nm × 200 nm TiOx memristive device in volatile region is biased with sub-threshold, unipolar and bipolar neural events. The input neural signal is pre-processed using different amplification settings. The resistive state response of the test device in response to the input...
Reliability of Network-on-Chip has become a critical problem because of the aggressive technology scaling. A variety of transmission mechanism to tolerant the bit errors has been proposed to achieve the best trade-off between performance and overhead. In this work, a transmission mechanism for NoC based on a novel combination of error detection, error correction, and retransmission is proposed. The...
PM2.5 detector has been designed based on ARM technology with PM2.5 laser sensor. The detector can detect the concentration of PM2.5 in the current environment in real-time, with three functions including of voice broadcast, LCD real-time display and air quality level LED light alert.
Microfluidic biochips are replacing the conventional biochemical analysers integrating the necessary functions onchip. We are interested in Flow-Based Microfluidic Biochips (FBMB), where a continuous flow of liquid is manipulated using integrated microvalves. Using microvalves and channels, more complex Fluidic Units (FUs) such as switches, micropumps, mixers and separators can be constructed. When...
The upgrades of the Compact Muon Solenoid particle physics experiment at CERN's Large Hadron Collider provide a major challenge for the real-time collision data selection. This paper presents a novel approach to pattern recognition and charged particle trajectory reconstruction using an all-FPGA solution. The challenges include a large input data rate of about 20 to 40~Tbps, processing a new batch...
Programs written in unsafe languages like C and C++ often suffer from errors like buffer overflows, dangling pointers, and memory leaks. Dynamic analysis tools like Valgrind can detect these errors, but their overhead — primarily due to the cost of instrumenting every memory read and write — makes them too heavyweight for use in deployed applications and makes testing with them painfully slow. The...
The method of structures creation of digital redundant devices with use of majority elements for fail safety support is considered in this report. This method is used for real-time systems. It is characterized by the fact that the redundant device is built in the form of excess structure with the loaded reserve, and its recovering organs are implemented on the basis of majority elements. The Important...
Targeting the spatial-modulation (SM) MIMO systems, a symbol detector is designed, implemented, and verified. The detector is designed based on a low-complexity dual datapath architecture performing the modified signal-vector-based list detection. Implemented in 0.18μm CMOS, the detector occupies 1.85mm2 and shows the throughput of 686Mbps for 16 × 4 256-QAM SM-MIMO systems. Evaluated under a hardware-in-the-loop...
A real-time object detection and classification system using FPGA developed for high-speed asymmetric time-stretched optical microscopy (ATOM) framework is presented. Due to the massive amount of data generated by optical frontend, storing the raw data for offline post-processing is slow and impractical for the targeted single cell analysis applications. The proposed FPGA solution eliminates the need...
In this modern era, mobile phone has great impact on daily life and is used for exchange of information in the form of text, audio, email and images. Though it has many positive impacts but its negative impact in teenagers can not be neglected. These negative impact can be reduced by continuous monitoring. This paper presents a novel user defined system model to detect abnormal behavior of cell phone...
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