... II. OOFDM BASED ON DIRECT DETECTION A. Back-to-Back System Setup Fig. 1 depicts the system setup. The binary data stream at 43Gb/s is parallelized and mapped into complex symbols. By means of the choice of symbol mapping (e.g. QPSK, QAM), bandwidth efficiency and sensitivity can be balanced. In this ...
Pre-amplifying the analog output of a MEMS microphone
... For the MP23AB02B, the signal distortion is less than 0.5 % at 94 dBSPL (which is equivalent to 1 Pa). For high acoustic pressure, the distortion level increases. A 10 % distortion level is shown in Figure 1. The microphone can be used from the noise floor up to the distortion level. This is its dyn ...
... For the MP23AB02B, the signal distortion is less than 0.5 % at 94 dBSPL (which is equivalent to 1 Pa). For high acoustic pressure, the distortion level increases. A 10 % distortion level is shown in Figure 1. The microphone can be used from the noise floor up to the distortion level. This is its dyn ...
Repeater cable version 2
... Make sure to set the timeout timer in the TX radio to something reasonable. The timeout timer is a government requirement that may prevent the transmitter from staying on the air in case of a system failure. With some radio models when the RX radio is turned off, the COR line will go low causing the ...
... Make sure to set the timeout timer in the TX radio to something reasonable. The timeout timer is a government requirement that may prevent the transmitter from staying on the air in case of a system failure. With some radio models when the RX radio is turned off, the COR line will go low causing the ...
Chopper Modulation Improves OTA Information Transmission
... is plotted in Fig. 6 as a function of signal power. While the amplifier has a higher capacity since its bandwidth is unrestricted, the chopper amplifer has a higher capacity for very low signal powers and a higher information rate when frequencies are limited below fchop . The optimal frequency rang ...
... is plotted in Fig. 6 as a function of signal power. While the amplifier has a higher capacity since its bandwidth is unrestricted, the chopper amplifer has a higher capacity for very low signal powers and a higher information rate when frequencies are limited below fchop . The optimal frequency rang ...
1 INTRODUCTION
... 8.1.1 Causality and Its Implications. 8.1.2 Characteristics of Practical Frequency-Selective Filters. 8.2 Design of FIR Filters 8.2.1 Symmetric and Ant symmetric FIR Filters. 8.2.2 Design of Linear-Phase FIR Filters Using Windows. 8.2,3 Design of Linear-Phase FIR Filters by the Frequency-Sampling M ...
... 8.1.1 Causality and Its Implications. 8.1.2 Characteristics of Practical Frequency-Selective Filters. 8.2 Design of FIR Filters 8.2.1 Symmetric and Ant symmetric FIR Filters. 8.2.2 Design of Linear-Phase FIR Filters Using Windows. 8.2,3 Design of Linear-Phase FIR Filters by the Frequency-Sampling M ...
Chapter 6
... APDs internally multiply the primary photocurrent before it enters to following circuitry. In order to carrier multiplication take place, the photogenerated carriers must traverse along a high field region. In this region, photogenerated electrons and holes gain enough energy to ionize bound electro ...
... APDs internally multiply the primary photocurrent before it enters to following circuitry. In order to carrier multiplication take place, the photogenerated carriers must traverse along a high field region. In this region, photogenerated electrons and holes gain enough energy to ionize bound electro ...
DWDM
... down optical fiber. Dispersion results in distortion of the signal, which limits the bandwidth of the fiber. Two general types of dispersion Chromatic Dispersion - is linear Chromatic dispersion occurs because different wavelengths propagate at different speeds. Increases as the square of the bit ra ...
... down optical fiber. Dispersion results in distortion of the signal, which limits the bandwidth of the fiber. Two general types of dispersion Chromatic Dispersion - is linear Chromatic dispersion occurs because different wavelengths propagate at different speeds. Increases as the square of the bit ra ...
Chapter 2 part IV_updated 23 july - MetaLab
... Dept of Electrical Engineering Universiti Tenaga Nasional ...
... Dept of Electrical Engineering Universiti Tenaga Nasional ...
Practical design model of DnPSK systems using direct BER
... implementation with two nested MZMs (see e.g. [4]). The signal is then passed through a multiplexer ArrayWaveguide-Grating (AWG). Finally the signal is transmitted over a 240 km link consisting of three spans, each of them containing an erbium-doped fiber amplifier (EDFA), 80 km standard single-mode ...
... implementation with two nested MZMs (see e.g. [4]). The signal is then passed through a multiplexer ArrayWaveguide-Grating (AWG). Finally the signal is transmitted over a 240 km link consisting of three spans, each of them containing an erbium-doped fiber amplifier (EDFA), 80 km standard single-mode ...
Structure Design of On-line Monitoring System for Power Supply Insulation
... related configuration and monitoring data. Dipatching management can set what equipment to monitoring and the monitoring time, and offer the operation state, dispatching status of the monitored equipment. Data management is used to record, upload, copy, list print and display the monitoring data of ...
... related configuration and monitoring data. Dipatching management can set what equipment to monitoring and the monitoring time, and offer the operation state, dispatching status of the monitored equipment. Data management is used to record, upload, copy, list print and display the monitoring data of ...
asynchronous analog-discrete converter using an analog signal
... inflection point, in substitution to the operational amplifiers used in the first version of the converter and that allowed to work with high gain and slew-rate. This processor is also described in this article. Keywords: converter, asynchronous, gigahertz. (maximum of three). 1. INTRODUCTION The co ...
... inflection point, in substitution to the operational amplifiers used in the first version of the converter and that allowed to work with high gain and slew-rate. This processor is also described in this article. Keywords: converter, asynchronous, gigahertz. (maximum of three). 1. INTRODUCTION The co ...
Unit 1 Introduction to Spread
... Important issues related to spread spectrum techniques How to get receiver’s spreading sequence in sync with the transmitter’s spreading sequence? How to generate spreading sequence which is difficult to predict or at least exhibit certain properties? How many chips per bit should be used? H ...
... Important issues related to spread spectrum techniques How to get receiver’s spreading sequence in sync with the transmitter’s spreading sequence? How to generate spreading sequence which is difficult to predict or at least exhibit certain properties? How many chips per bit should be used? H ...
Presentación de PowerPoint
... Cross-talk between subchannel threshold (same Vref). Low frequency noise (random trigger vs. sync. trigger). Linearity (function of pile-up compensation subtractor). Matching and calibration of of pile-up compensation. Cross-talk between channels. Pedestal stability with time. ...
... Cross-talk between subchannel threshold (same Vref). Low frequency noise (random trigger vs. sync. trigger). Linearity (function of pile-up compensation subtractor). Matching and calibration of of pile-up compensation. Cross-talk between channels. Pedestal stability with time. ...
Technical Report
... • ISDN - (2) 64kbps channels - aggregate 128kbs - and higher by combining ISDN lines (video conferencing) • X.25 -The ITT standard for connecting terminal equipment to packet switching data circuits. Max effective speed 2mbps • FRAME RELAY - can offers users transmission speeds of 2.048 megabits per ...
... • ISDN - (2) 64kbps channels - aggregate 128kbs - and higher by combining ISDN lines (video conferencing) • X.25 -The ITT standard for connecting terminal equipment to packet switching data circuits. Max effective speed 2mbps • FRAME RELAY - can offers users transmission speeds of 2.048 megabits per ...
Translation
... • Exercises • I. Read the following statements carefully, and decide whether they are true (T) or false (F) according to the text. – ___1．The name “Ethernet” was derived from the similar fundamentals between computers communicating over a shared coaxial cable and radio broadcast systems over the eth ...
... • Exercises • I. Read the following statements carefully, and decide whether they are true (T) or false (F) according to the text. – ___1．The name “Ethernet” was derived from the similar fundamentals between computers communicating over a shared coaxial cable and radio broadcast systems over the eth ...
3B17 数据手册DataSheet 下载
... Output modules accept 0 to +10V (or +10V) single-ended signals and provide an isolated 4-20 mA (or 0-20 mA) process signal. All modules feature a universal pin-out and may be readily hot-swapped under full power and interchanged without disrupting field wiring. The Analog Devices 3B Series Signal Co ...
... Output modules accept 0 to +10V (or +10V) single-ended signals and provide an isolated 4-20 mA (or 0-20 mA) process signal. All modules feature a universal pin-out and may be readily hot-swapped under full power and interchanged without disrupting field wiring. The Analog Devices 3B Series Signal Co ...
Radar Signal Processing
... y(kT) is the discrete convolution of x and h N is the total number of samples in one period of the signal (including any zero padding present) k is the sample number of displacement time (corresponds to t in continuous realm) i is the sample number of the time used to find the area under the product ...
... y(kT) is the discrete convolution of x and h N is the total number of samples in one period of the signal (including any zero padding present) k is the sample number of displacement time (corresponds to t in continuous realm) i is the sample number of the time used to find the area under the product ...
Chapter 1 : Introduction to Electronic Communications
... transmission line without a reflected power is called a flat or nonresonant line. a transmission line is nonresonant if it is of infinite length or if it is terminated with a resistive load equal to the characteristic impedance of the transmission line. when the load is not equal to the characterist ...
... transmission line without a reflected power is called a flat or nonresonant line. a transmission line is nonresonant if it is of infinite length or if it is terminated with a resistive load equal to the characteristic impedance of the transmission line. when the load is not equal to the characterist ...
Chapter 1 : Introduction to Electronic Communications
... transmission line without a reflected power is called a flat or nonresonant line. a transmission line is nonresonant if it is of infinite length or if it is terminated with a resistive load equal to the characteristic impedance of the transmission line. when the load is not equal to the characterist ...
... transmission line without a reflected power is called a flat or nonresonant line. a transmission line is nonresonant if it is of infinite length or if it is terminated with a resistive load equal to the characteristic impedance of the transmission line. when the load is not equal to the characterist ...
Analog and Digital Multi
... Every meter impacts the circuit it is measuring to some extent. While some impact is inevitable, it can be minimized through good meter design. Voltmeters are always connected in parallel with the component under test. A perfect voltmeter has infinite resistance, so that it draws no current from the ...
... Every meter impacts the circuit it is measuring to some extent. While some impact is inevitable, it can be minimized through good meter design. Voltmeters are always connected in parallel with the component under test. A perfect voltmeter has infinite resistance, so that it draws no current from the ...
Lec3 sonar_eqn - Ocean Mixing Group
... Detection may be difficult but the probability of a false alarm is low as well. On the other hand, if DT is too low, the probability of false alarms increases ...
... Detection may be difficult but the probability of a false alarm is low as well. On the other hand, if DT is too low, the probability of false alarms increases ...
Telecommunication
Telecommunication occurs when the exchange of information between two or more entities (communication) includes the use of technology. Communication technology uses channels to transmit information (as electrical signals), either over a physical medium (such as signal cables), or in the form of electromagnetic waves. The word is often used in its plural form, telecommunications, because it involves many different technologies.Early means of communicating over a distance included visual signals, such as beacons, smoke signals, semaphore telegraphs, signal flags, and optical heliographs. Other examples of pre-modern long-distance communication included audio messages such as coded drumbeats, lung-blown horns, and loud whistles. Modern technologies for long-distance communication usually involve electrical and electromagnetic technologies, such as telegraph, telephone, and teleprinter, networks, radio, microwave transmission, fiber optics, and communications satellites.A revolution in wireless communication began in the first decade of the 20th century with the pioneering developments in radio communications by Guglielmo Marconi, who won the Nobel Prize in Physics in 1909. Other highly notable pioneering inventors and developers in the field of electrical and electronic telecommunications include Charles Wheatstone and Samuel Morse (telegraph), Alexander Graham Bell (telephone), Edwin Armstrong, and Lee de Forest (radio), as well as John Logie Baird and Philo Farnsworth (television).