digital meets analog adc and dac

... filter Analog Filter Analog Input reconstruction filter Digital Processing ADC Filtered Analog Input Digitized Input Analog Filter DAC Digitized Output S/H Analog Output Analog Output FIGURE 3-7 Analog ... Digital- to -Analog Conversion In theory, the simplest method for digital- to -analog conversion is to pull the samples from memory and convert them into an impulse train This is Chapter 3- ADC and ... this analog filter This 1/sinc(x) frequency boost can be handled in four ways: (1) ignore it and accept the consequences, (2) design an analog filter to include the 1/sinc(x) Chapter 3- ADC and DAC...

Ngày tải lên: 13/09/2012, 09:49

Ngày tải lên: 03/07/2014, 22:14

... phơng pháp chuyển đổi ADC DAC thực nghiệm Đồ án tốt nghiệp kỹ thuật viên cntt Chơng Chuyển đổi tơng tự số ADC (The Analog to Digital Convertor) Nguyên lý chuyển đổi tơng tự số (ADC basic principles) ... làm việc ADC Đề tài: phơng pháp chuyển đổi ADC DAC thực nghiệm Đồ án tốt nghiệp kỹ thuật viên cntt (ADC Composition, Diagram and Working Principle) 3.1 cấu tạo, sơ đố khối (Diagram and Composition) ... nối dặc biệt DAC so sánh Ngoài ra, sai số phép chuyển đổi phụ thuộc vào độ xác, độ ổn định điện áp mẫu sai số thiết bị so sánh Chơng Chuyển đổi số - tơng tự DAC (The Digital to Analog Convertor)...

Ngày tải lên: 21/08/2012, 16:14

... phơng pháp chuyển đổi ADC DAC thực nghiệm Đồ án tốt nghiệp kỹ thuật viên cntt Chơng Chuyển đổi tơng tự số ADC (The Analog to Digital Convertor) Nguyên lý chuyển đổi tơng tự số (ADC basic principles) ... làm việc ADC Đề tài: phơng pháp chuyển đổi ADC DAC thực nghiệm Đồ án tốt nghiệp kỹ thuật viên cntt (ADC Composition, Diagram and Working Principle) 3.1 cấu tạo, sơ đố khối (Diagram and Composition) ... nối dặc biệt DAC so sánh Ngoài ra, sai số phép chuyển đổi phụ thuộc vào độ xác, độ ổn định điện áp mẫu sai số thiết bị so sánh Chơng Chuyển đổi số - tơng tự DAC (The Digital to Analog Convertor)...

Ngày tải lên: 22/11/2012, 15:14

... Nyquist bandwidth constraint Nyquist bandwidth constraint: The theoretical minimum required system bandwidth to detect Rs [symbols/s] without ISI is Rs/2 [Hz] Equivalently, a system with bandwidth ... ≥ [symbol/s/Hz] 2T W Bandwidth efficiency, R/W [bits/s/Hz] : An important measure in DCs representing data throughput per hertz of bandwidth Showing how efficiently the bandwidth resources are ... noise and no ISI) Lecture 16 Example of eye pattern: Binary-PAM, SRRQ pulse … AWGN (Eb/N0=20 dB) and no ISI Lecture 17 Example of eye pattern: Binary-PAM, SRRQ pulse … AWGN (Eb/N0=10 dB) and no...

Ngày tải lên: 18/10/2013, 06:15

... next-generation products and services And as networks migrate and expand to include more complex services, reliability and flexibility become even more vital to their success That is why digital system ... change and demands on the network grow At DS3 (44.736 Mbps) digital signal rates, DSX equipment connects NEs such as office repeaters, fiber optic terminals, digital loop carriers, multiplexers, and ... preassembled cable management and the basic framework to securely support valuable network equipment and allow efficient and organized cable routing Panels and chassis are selected and installed separately...

Ngày tải lên: 04/11/2013, 13:15

... maximize the wider economic and social benefits, lessening both the International Digital Divide and the Domestic Digital Divide The 13 th chapter is Digital Technologies and the Cross-Border Expansion ... productivity and efficiency gains (Amit and Zott, 2001; Lucking-Reiley and Spulbur, 2001; Wigand and Benjamin, 1995) E-commerce also is expected to facilitate entry into new markets and the extension ... greater trust and determined efforts to raise ICT-related skills and competencies across the economy and society in general to move toward greater and more equal digital opportunity On one hand, e-commerce...

Ngày tải lên: 10/12/2013, 11:16

... next-generation products and services And as networks migrate and expand to include more complex services, reliability and flexibility become even more vital to their success That is why digital system ... terminating and rearranging of circuits as traffic patterns change and demands on the network grow At DS1 (1.544 Mbps) digital signal rates, DSX equipment connects NEs such as office repeaters, digital ... preassembled cable management and the basic framework to securely support valuable network equipment and allow efficient and organized cable routing Panels and chassis are selected and installed separately...

Ngày tải lên: 10/12/2013, 20:15

... discrete-time systems We derive models for the analog- to -digital converter (ADC) , the digital- to -analog converter (DAC) , and for an analog system with a DAC and an ADC We include systems with time delays ... language (analog) is performed by a digital- to -analog converter, or DAC The translation from process language to digital controller language is performed by an analog- to -digital converter, or ADC A ... factors been identical for digital and analog control, analog control would be superior to digital control What then is the reason behind the change from analog to digital that has occurred over...

Ngày tải lên: 01/01/2014, 20:22

... G.813 Re-timing option on the E1 interfaces Standards: In compliance with the ITU, ETSI, IEC, IEEE, IETF standards for E1 and SDH equipment Web Site: www .adc. com From North America, Call Toll Free: ... interface SNMP with trap messages supported Non-volatile software and database stores including back-up and restore Timing: E1 and line timing (Timing Marker) support Integrated SDH equipment ... Slots: 19" 1RU (HE) and 2RU (HE) kg Power-over-Ethernet (PoE), 802.3af, < 14 Watt, DC 48V and redundant power supply via external converter Two SFPs, eight interface cards (2RU) and four interface...

Ngày tải lên: 17/01/2014, 11:20

... tạo, sơ đồ khối nguyên tắc làm việc ADC (ADC Composition, Diagram and Working Principle) 3.1 cấu tạo, sơ đố khối (Diagram and Composition) UA Mạch lấy Mẫu ADC UA UM Lượng tử hoá Mã hoá UD hình ... phương pháp chuyển đổi ADC DAC thực nghiệm Đồ án tốt nghiệp kỹ thuật viên cntt Hình đặc tyuến lý tưởng thực chuyển đổi ADC Như vậy, so sánh hai đường đặt tuyến truyền đạt lý tưởng ADC đường bậc thang ... VÀ ĐIỀU KHIỂN BẰNG MÁY TÍNH Chương CHUYỂN ĐỔI TƯƠNG TỰ – SỐ ADC (The Analog to Digital Convertor) Nguyên lý chuyển đổi tương tự – số (ADC basic principles) Tín hiệu tương tự tín hiệunbiến thiên...

Ngày tải lên: 25/01/2014, 10:20

... expand even more Bandwidth will continue to increase to meet this new demand, both within the Internet backbones and out to individual users There is a tremendous level of pent-up demand for bandwidth ... time And as it plummets, connectivity and higher-bandwidth connections become that much more important, generating more usage and more capital to upgrade the network The Magnetism of Money and ... FCC to regulate "interstate and foreign commerce in communication by wire and radio,"49 and the FCC and state public utility commissions indisputably regulate the rates and conditions under which...

Ngày tải lên: 18/02/2014, 00:20

Ngày tải lên: 19/03/2014, 21:20

... source to a form compatible with a digital system Lecture Formatting and transmission of baseband signal Digital info Format Textual source info Analog info Analog info sink Sample Quantize Format ... Important features of digital communication systems Some basic concepts and definitions such as as signal classification, spectral density, random process, linear systems and signal bandwidth Lecture ... waveforms Demodulate/ Detect Digital info Lecture Transmit Channel Receive Format analog signals  To transform an analog waveform into a form that is compatible with a digital communication system,...

Ngày tải lên: 23/03/2014, 10:21

... we talked about:  Receiver structure  Impact of AWGN and ISI on the transmitted signal  Optimum filter to maximize SNR  Matched filter and correlator receiver  Signal space used for detection ... deterministic  Elements of noise vector n = (n1 , n2 , , nN ) are i.i.d Gaussian random variables with zero-mean and variance N / The noise vector pdf is  n2  pn (n) = exp − ( πN ) N /  N ... Signal space used for detection  Orthogonal N-dimensional space  Signal to waveform transformation and vice versa Lecture Today we are going to talk about:  Signal detection in AWGN channels  Minimum...

Ngày tải lên: 23/03/2014, 10:21

... phiên sử dụng S-box hoán vị bít trình mở rộng thực tính chất gọi xáo trộn khuyếch tán (confusion and diffusion) Hình 13 Cấu trúc thuật toán Feistel dùng DES SVTH: Nguyễn Trọng Tài 23 Báo cáo cuối...

Ngày tải lên: 26/03/2014, 19:27

... other, Lysyanskaya and Triandopoulos [Lysyanskaya and Triandopoulos 2006], Gordon and Katz [Gordon and Katz 2006], and Abraham et al [Abraham et al 2006] investigated the same problem and proposed ... dependability and software economics, behavioral economics, and the psychology of security for analyzing and solving certain security and privacy problems [Anderson and Moore 2006; Camp 2006; Bohme and ... wire-tap channel [Wyner 1975] and was followed in [Leung-Yan-Cheong and Hellman 1978], and [Csiszar and Korner 1978] for the scalar Gaussian wire-tap channel and the broadcast channel, respectively...

Ngày tải lên: 28/03/2014, 20:20

... we talked about:  Channel coding  Linear block codes  The error detection and correction capability  Encoding and decoding  Hamming codes  Cyclic codes Lecture 10 Today, we are going to ... machine with memory This fundamental difference in approach imparts a different nature to the design and evaluation of the code   Block codes are based on algebraic/combinatorial techniques Convolutional ... rate, determining the number of data bits per coded bit  RcIn=practice, usually k=1 is chosen and we assume that k/n from now on K is the constraint length of the encoder a where the encoder...

Ngày tải lên: 30/03/2014, 10:20

... Basic definitions and concepts   Signals classification and linear systems Random processes and their statistics   WSS, cyclostationary and ergodic processes Autocorrelation and power spectral ... Average symbol and bit error probabilities Average symbol energy, symbol rate, bandwidth Comparison of modulation schemes in terms of error performance and bandwidth occupation (power and bandwidth) ... Design goals:   Probability of error and delay constraints Trade-off between parameters:   Bandwidth and power limited systems Trading power with bandwidth and vise versa Lecture 13 27 Block...

Ngày tải lên: 30/03/2014, 10:20