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Digital Communications 0909.402.03/0909.504.01 Fall 2002

Digital Communications 0909.402.03/0909.504.01 Fall 2002

Digital Communications 0909.402.03/0909.504.01 Fall 2002. Lecture 7 October 21, 2002. Shreekanth Mandayam ECE Department Rowan University http://engineering.rowan.edu/~shreek/fall02/digcomm/. Plan. Midterm Exam Bandpass Data Transmission Binary Modulated Bandpass Signaling OOK

By marvin
(177 views)

第 七 章 数字频带传输系统

第 七 章 数字频带传输系统

现代通信原理. 第 七 章 数字频带传输系统. 振幅键控 (ASK) 移频键控 (FSK) 移相键控. 绝对移相 ( PSK ) 相对移相 ( DPSK ). 数字调制的 基本分类. 用数字基带信号 ( 因幅度取值有限而可视作开关信号 ) 去键控高频正弦载波的振幅、频率或相位达调制目的 (频谱搬移) !. 解调方式 相干解调法 非相干解调法 抗噪声性能 ∵加性噪声 → 解调波形失真 → 数字识别器 (抽样判决器) 再生数据 “ 误码 ” ∴要求 P e 结果式 ( 注 : 接收已调波的形式及解调方案不同 , 则 P e 的结果也不一样 ).

By unity
(239 views)

Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs)

Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs)

Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: [ PHY Layer Submission for 802.15.3c ] Date Submitted: [7 May 2007] Source: [André Bourdoux, Stefaan Derore, Jimmy Nsenga, Wim Van Thillo - IMEC] Address [Kapeldreef 75, 3001 Leuven, Belgium]

By nardo
(70 views)

Telecommunication Systems –II Laboratories

Telecommunication Systems –II Laboratories

Telecommunication Systems –II Laboratories. Review. TLabs 1,2,3: Types of Pulse Code Modulation ( PCM ). Sampling Natural Sampling Sample & Hold Quantization Standard step Differential (DM) Differential PCM (DPCM) Delta Modulation. TLab 4,5: Transmit and Receive Filter.

By dallon
(93 views)

Digital Transmission Via Carrier Modulation

Digital Transmission Via Carrier Modulation

Digital Transmission Via Carrier Modulation. Carrier Phase Modulation BPSK(Binary PSK) : M=2 QPSK(Quadrature PSK): M=4 MPSK(M-ary PSK): M > 2. Transmitting filter pulse shape Amplitude. Carrier Phase Modulation.

By carrie
(328 views)

Secure PSK Authentication

Secure PSK Authentication

Secure PSK Authentication. Authors:. Date: 2010-07-14. Abstract. This presentation presents the problems with D0.1’s use of PSKs and a solution to them. What’s the Problem?. PSKs are being used for authentication in a PBSS It is difficult to provision a “strong” PSK.

By nicole
(95 views)

Typical Digital Modulation Methods M-PSK DPSK M-QAM (Linear amplifiers required “AM”) FSK

Typical Digital Modulation Methods M-PSK DPSK M-QAM (Linear amplifiers required “AM”) FSK

Typical Digital Modulation Methods M-PSK DPSK M-QAM (Linear amplifiers required “AM”) FSK OQPSK/MSK – I and Q phase transitions are offset in time so that 180 o phase shifts are never encountered. Q. Q. X. X. X. I. I. X. X. X. X. X. OQPSK – Offset Square Pulses.

By vachel
(147 views)

Evaluating the Bit Error Rate for M-PSK

Evaluating the Bit Error Rate for M-PSK

Evaluating the Bit Error Rate for M-PSK. Presented by: Idris Ajia Assessor: Dr. Tareq Al- Naffouri Date: Saturday, 12 December 2009. Introduction: Importance of Digital Communications. Increasing dependence on Digital Communication. Need for accurate data TX Calculating BER.

By luisa
(118 views)

Digital Modes

Digital Modes

Digital Modes. What Are Digital Modes. Conversational (non-voice) Person to person Interactive Non-Voice keyboard to keyboard Not file driven Software driven Computer / Soundcard enabled Low bandwidth (mostly). Digital Modes - Advantages. Low bandwidth Low power requirements

By dyre
(220 views)

Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs)

Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs)

Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: Comparison of D-PSK and FSK for Narrowband Systems Date Submitted: 22, September 2009

By kiral
(77 views)

Modulation

Modulation

Modulation. Kevin Bolding Electrical Engineering Seattle Pacific University. Digital Transmission of Analog Data. Analog signal. Sampling. Convert to discrete samples (time domain). Quantizing. Convert to discrete levels (amplitude). Digital data.

By wynn
(117 views)

MPSK on OFDM system program

MPSK on OFDM system program

MPSK on OFDM system program. Speaker: 沈遠博. OUTLINE. 1.OFDM system theory. 2.MPSK system simulink. 3.OFDM system simulink. 4.Results comparison. 5.Conclusion. OFDM THEORY. OFDM THEORY. OFDM THEORY. Channel. x bits. Serial Data Input. Serial-to- Parallel Converter. Signal Mapper.

By joanna
(263 views)

Background

Background

Background. Modulation Types. FSK Type BUILD. ASK Type BUILD. PSK Type BUILD. PSK HL Type Summary. BPSK Type BUILD. QPSK Type BUILD. 8PSK Type BUILD. BPSK Type 1 bits on. QPSK Type 2 bits on. 8PSK Type 3 bits on. TYPES ALL PSK. Flagman At Ease. 1 Bit Per Second 0. 1 Bit Per Second.

By arty
(157 views)

CIS 6930 Powerline Communications PHY Layer

CIS 6930 Powerline Communications PHY Layer

(c) 2013 Richard Newman. CIS 6930 Powerline Communications PHY Layer. PHY Layer/Modulation. What does PHY layer do? Theoretical limits Impairments Modulation Analog Digital Conclusions. Physical Layer – What's in It?. Mechanical Medium Connectors Electrical/optical Band Modulation

By gayle
(163 views)

Video

Video

MOD LO7. --. mod.dpm.scr05 Multiple Choice. mod.dpm.scr06 Matching. mod.dpm.scr09 Matching. mod.dpm.scr01 Course Introduction. NEXT. KC. KC. KC. F. mod.dpm.scr11 Phase Changes in PSK Signals. mod.dpm.scr04 PSK Techniques. mod.dpm.scr03 Phase Shift Keying. mod.dpm.scr07

By afia
(213 views)

Figure 5-16

Figure 5-16

Figure 5-16. Analog to Digital Encoding.  The McGraw-Hill Companies, Inc., 1998. WCB/McGraw-Hill. Figure 5-17. PAM.  The McGraw-Hill Companies, Inc., 1998. WCB/McGraw-Hill. Figure 5-18. Quantized PAM Signal.  The McGraw-Hill Companies, Inc., 1998. WCB/McGraw-Hill. Figure 5-19.

By liang
(134 views)

PSK 966

PSK 966

PSK 966. Параллельно-раздвижная система GU- 966 Дистанция между створкой и рамой 118 мм. 118 мм. PSK G-U 966/200. PSK G-U 966/200. PSK схема „C“ с 2 ручками. Передачи для схемы „C“ Дормас 40: 6-29880-04-0-* 6-29880-55-0-* Дормас 30: 6-29881-04-0-*

By yoshio-wallace
(181 views)

6 数字信号的调制传输

6 数字信号的调制传输

6 数字信号的调制传输. 本章内容. 掌握 二进制 数字调制 信号的 概念 , 能画出 典型的 2 ASK、2FSK、2PSK、2DPSK 时域波形图 理解 多进制数字调制( MASK、MPSK ) 的时域波形图 能够 对几种二进制数字调制进行性能的比较. 为什么采用数字信号的调制传输. 数字基带信号是低频信号,只适宜在低通信道中传输,但常见的实际信道都是带通型的,所以必须对基带数字信号进行调制,将它搬移到高频段,称为 数字调制 ,相应调制信号的传输称为 数字信号调制传输. 6.1 概述. 数字调制,载波的参数改变只能取有限个取值,称 键值. 高频载波的一般形式:

By cole-ware
(140 views)

Figure 5-15

Figure 5-15

Figure 5-15. Analog to Digital Encoding.  The McGraw-Hill Companies, Inc., 1998. WCB/McGraw-Hill. Figure 5-16. PAM.  The McGraw-Hill Companies, Inc., 1998. WCB/McGraw-Hill. Figure 5-17. Quantized PAM Signal.  The McGraw-Hill Companies, Inc., 1998. WCB/McGraw-Hill. Figure 5-18.

By orson-case
(67 views)

Modulations Amplitude Shift Keying ASK (OOK)

Modulations Amplitude Shift Keying ASK (OOK)

Modulations Amplitude Shift Keying ASK (OOK). BW for ASK. Nbaud is baud rate.

By wyatt-berry
(141 views)

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