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Ultra-wide-band (UWB) is a promising short-range indoor wireless communication technology for large communication capacity, high transmission rate, low power consumption, etc. Multi-band orthogonal frequency-division multiplexing ultra-wide-band (MB-OFDM UWB) system can achieve much higher anti-noise...

Imagining living in the past without the facilities that are available to people today seems a bit too hard to survive. We live in an era where our dependency upon technology in our routine tasks has driven us to a point where we take most of gifts of technology for granted. Technology has transformed...

With the widespread use of watermark in video, audio and image, propose a relational database based watermark embedding and extraction method. The algorithm utilizes the single—multiple mapping approach to plug in watermark, which scatter the distribution of watermark information and enhance the anti-attack...

Every kind of processor relies on full adders in their design and development. An area-efficient full adder with a small number of transistors is shown in this project. It is designed to be both powerful and power-efficient. In this paper, we present the design of a low-power full adder with good performance,...

Novel XOR/XNOR and simultaneous XOR-XNOR circuits are suggested in this study. The suggested circuits significantly enhance power consumption and delay thanks to their tiny output capacitance and almost nonexistent short-circuit power dissipation. Additionally, six separate hybrid 1- bit full-adder (FA)...

As a very important part of Link-16, Joint Tactical Information Distribution System (JTIDS) has a good performance. In this paper, the primary technologies of JTIDS are presented and their Transmission performance are simulated and analyzed. And in the different conditions, the bit error rate simulation...

Low Density Parity Check code is more and more taken seriously in high-speed transmission. In this article we represent a LDPC coder and decoder which based on IEEE802.16e and realize the coder and decoder with Virtex-5 FPGA. By using Matlab to make an off-line system simulation, we analyzed and compared...

In this paper, we investigate the downlink performance of cooperative distributed antenna systems (DAS) in multicell environment, including ergodic capacity, outage probability, and bit error rate (BER). Blanket transmission, all distributed antenna modules (DAMs) in one cell are utilized to transmit...

Vehicle-to-Vehicle (V2V) communication is a crucial aspect of Intelligent Transportation Systems (ITS) aimed at improving road safety and traffic efficiency. Wireless Optical Networking (WON) technology has emerged as a promising solution to overcome the limitations of conventional radio-frequency-based...

Rate control is the core issue to realize video encoder, and it is also one of the key factors determining the quality of video code system. Given the MAD (Mean Absolute Difference) prediction and the drawback of bit rate control in the BU (Basic Unit) layer, improvements are put forward on the basis...

UWB is a high data transfer rate , high-performance , low-cost , low-power short-range wireless communications technology data transmission but it is narrow in the use of non-sinusoidal pulse high-speed transmission of data , but also faced with many problems. Based on the characteristics of UWB communications...

Modulation principle of dual-polarization quadratu-re phase shift keying signal and polarization-switched QPSK signal are demonstrated and advantages of PS-QPSK are proved in theoretically. A novel modulation scheme of PS-RZ-QPSK signal is proposed in this paper. The scheme reduces transmitter cost by...

Performance of coherent atmospheric optical communication system with heterodyne detection and LDPC codes was evaluated over atmospheric channel attenuations of which are about 20-30 dB/km. To reduce bit error and enhance the system performance LDPC code was implemented in system. Combining coherent...

A Reconfigurable Optical Add-Drop Multiplexer (ROADM) is an optical add-drop multiplexer that can remotely switch user’s traffic. This optical network considered input power for the project’s first stage by implementing a 4-channel Dense Wavelength Division Multiplexing (DWDM) system. The resulting outputs...

China's UHF RFID band of 840 ~ 845MHz and 920 ~ 925MHz, distance of mobile communication CDMA800, GSM band near, vulnerable to interference in mobile communication system, resulting in demodulation bit error rate increased RFID tags. The interference of mobile communication system formation mechanism...

The approximate full adder (FA) and subtractor of about 8 transistors each with small areas respectively. The FA and subtractor make very few errors, three errors in the FA and two errors in the subtractor, so they are adequate for approximate computing applications. In order to achieve increased speed,...

In this paper, a resource scheduling algorithm for Long Term Evolution (LTE) downlink is proposed. It provides Quality of Service (QoS) guarantee to Guaranteed Bit Rate (GBR) services and also suit to the Non Guaranteed Bit Rate (Non-GBR). Different services possess different QoS needs in LTE system,...

In this paper, an improved deterministic block parallel interleaver based on S-distance for Turbo codes is designed according to the theory of Bubble Sort. The aim is to overcome the long delay of S-random interleaver. The improved interleaver has the larger spreading factor ‘S’, lower delay and better...

Considering high false alarm probability of BIT and oversize of off-line ATE, the paper studies and designs an online automatic test system. The interface signals of radar line replaceable units (LRU) on working condition are leaded out by three-port conversion card and conditioned with insulation technology,...

IETF has specified Mobile IPv4 and Mobile IPv6 in RFC3344 and RFC3775 respectively, but not yet discussed Mobile IPv4/v6 in any published RFC. This paper proposes a scheme to solve one of Mobile IPv4/v6 problems which Home Agent (HA) locates in IPv6 network, and Correspondent Node (CN) locates in IPv4...

In digital electric power metering system, the sampled values of currents and voltages are transferred according to IEC61850-9-1/2 protocol. Quantization error will be introduced because the transferred data bit is limited. The quantization error introduced by IEC61850-9-1/2 is researched. The mathematical...

The Nexperia PNX1700 Media Processor is a complete Audio/Video/Graphics system on a chip that contains a high-performance 32-bit VLIW processor, capable of high quality software video, audio signal processing. Based on Philips Semiconductor's multimedia processing chip Nexperia PNX1700, designs a new...

This work presents an IP performance evaluation method, based on the Support Vector Machine (SVM). In this work, eight network parameters are collected: CPU utilization of switchboard, utilization of memory, network link-off, delay, delay jitter, bandwidth, bit rate of transmission and bit rate of reception....

Complex of cell-THPC-thiourea-ADP with lanthanide metal ions Dy3+ has been prepared. The thermal stability and smoke suspension of the samples are determined by TG, DTA and cone calorimetry. Experimental data show that for the complexes of cell-THPC-thiourea-ADP with the metal ions, thermal decomposition...

Flexible polyurethane foam has been treated with borax, expanded graphite (EG), EG/borax as flame retardant, respectively. The thermal degradation of samples has been studied by thermogravimetry (TG) and differential thermogravimetry (DTG) in air. From the resulting data, kinetic parameters for different...

In recent years, due to the breakthrough in 3D hardware graphics technology, the real-time depicted pictures have been increasingly sophisticated, and 3D games have been more diversified and closer to the real world. In this paper, the author used primarily Visual C ++6.0 as a development tool to understand...

Recent developments of EEDI (energy efficiency design index) which is an indicator of ship’s energy efficiency level imposed the cost effectiveness of sea-going vessels. Optimization of the ship’s total energy system is studied in this paper. This study is focus on optimum load sharing control, which...

In this study, an acid and alkali resistance cationic polyacrylamide flocculants (P(AM-MAPTAC)) was synthesized through copolymerization of acrylamide (AM) and methacrylamido propyl trimethyl ammonium chloride (MAPTAC) by innovative ultrasonic initiation technology. The structure and thermal decomposition...

On the condition of bit stream, for the reason of simple character sets of target strings and Pattern strings, the probability of appearance of absolutely bad character is very low. The bad character shift is not suited for pattern matching, because of it’s low efficiency. This paper gives the definition...

Holes machining path planning is of great significance to improve the efficiency and quality of the processing of porous parts. Hole group on the characteristics of size, shape, and location of different multi-bit processing optimization and process optimization, a reasonable choice of the machining...

With the development of codec technology and wireless broadband access system of the opening, use them as a hosted network, for low bit rate wireless video monitoring system is more and more get the attention of people. Based on CDMA network of the Internet are introduced in detail based on CDMA wireless...

Designed to be compatible with the most popular integrated communications processors, host processors, and networking digital signal processors, RapidIO Interconnect Architecture is a high-performance, packet-switched interconnect technology, where parallel Low-Voltage Differential Signaling (LVDS) is...

In this letter, we address the problem of a finite-precision implementation of demapper and decoder with parity likelihood ration algorithm for LDPC-Coded M-QAM systems. By exploiting the inherent property of the variations in bit reliabilities caused by QAM signal constellation, we introduce a novel...

Being a core component of an analog-to-digital converter (ADC), the operational amplifier is expected to provide sufficient DC gain and bandwidth to make the output amplitude less than ½ Least Significant Bit (LSB) in a half clock cycle. However, due to the limitation of the operational amplifiers in...

An accurate prediction of future stock market trends is a bit challenging as it requires a profound understanding of stock technical indicators, including market-dominant factors and inherent process mechanism. However, the significance of better trading decisions for a successful trader inspires researchers...

This work represents the Development and realization on 3-bit Vedic Arithmetic Multiplier anchored in MAC Unit in FinFET Technology. Nowadays for designing any Integrated Circuit, Delay and power should be low to make IC more advantageous. We opted for FinFET Technology because of its advantages over...

Aiming at the problems of the shortcomings of the ZigBee distributed address assignment mechanism lead to orphan nodes and the lower success rate of address assignment, a borrowed address assignment algorithm based on the depth model for ZigBee network is proposed. The algorithm utilizes 16-bit network...

Currently, multiple modulation schemes based on QPSK are applied more and more widely. They are involved in digital microwave communication system, digital satellite communication system, broadband access, mobile communication and cable television system. QPSK is quarternary phase-shift keying. It characterizes...

For DS/DPSK, carrier synchronization is not necessary in the receiver end, it outperforms DS/PSK systems respect to anti-frequency shift and anti-phase-jitter ability in phase changing shallow water channels, thus is considered as a robust modulation scheme in shallow water mid- and long-range acoustic...

MOS Current-Mode Logic (MCML) is usually used for high-speed applications. However, the large static power dissipation of MCML circuit limits its application in portable devices. In this work, we proposed a power-gating (PG) technique to reduce the standby power of the near-threshold MCML. The PG 1-bit...

Compared with PDC bit, diamond impregnated bit have advantages in strong abrasive and hard formation according to theoretical research and field pilot experience. But the design and parameter optimization of diamond impregnated bit for different kinds of formations haven’t been done until now, and this...

Epoxy resins modified with low-viscosity hyperbranched epoxy were prepared. The tensile strength, flexural strength, impact strength, fracture toughness, glass transition temperature (Tg) of the cured samples were investigated. The results show that the addition of hyperbranched epoxy improves the overall...

New free radical-cationic hybrid photopolymer, consisting of acrylate-based and epoxy-based photosensitive resin for stereolithography was prepared. The influence of the initiator sort and amount on the curing degree of the photopolymer was investigated. Photopolymerization process, degradation temperature,...

Memristor-based computing had emerged as a transformative alternative to conventional CMOS-based architectures, offering unparalleled advantages Regarding the area efficiency, energy usage and computational velocity. This research delves into the design and optimization of memristor-based subtractors,...

In this study, the pyrolysis of Zichang˚Coal (ZC) was investigated by thermogravimetry (TG) using three˚Catalysts, and the yields of the products obtained from pyrolysis, as well as gas˚Composition, were investigated by gas˚Chromatography (GC) using a fixed-bed reactor. The˚Catalytic mechanism was discussed...

This paper presents a fast Automatic Frequency Calibration (AFC) Loop with a low power consumption low phase noise LC voltage controlled oscillator (VCO) at 4.8GHz for WSN Application. The VCO adopts complementary differential negative resistance structure with switch resistor biasing which achieves...

Nanocrystalline CeO2 powders were synthesized using stearic acid and cerium nitrate by sol-gel and self-propagating combustion coupled method. Influence of various molar ratio of stearic acid and cerium nitrate on the products grain and colour were discussed. Powder appearance, crystal phase, specific...

In this letter,a 8QAM-DMT-OFDM optical access scheme is proposed and demonstrated. 8QAM-OFDM optical access signal is generated using discrete multitone (DMT) modulation, and its optical spectrum, electric spectrum before electro-optical conversion, constellation diagrams before and after transmission...

Local search is mainly implemented by the reproduction and crossover operation, global search is assured by the mutation operation in conventional genetic algorithm. In order to enhance the global search ability, three new mutation operators are proposed based on the idea that big change into small and...

This thermostat designed is for lab, with PID algorithm applied. The hardware includes PIC16F887 as processor, the 16-bit - A/D ADS1100 conversion as forward simulation, the thermal resistance PT100 as temperature sensor. The testing and control procedure is fixed by cooling and heating interaction.