chapter 07 analog communication systems pdf

Ngày tải lên: 14/12/2013, 12:15

... for Analog Systems Comparison with Baseband Systems, 531 AM Systems with Product Detection, 532 AM Systems with Envelope Detection, 533 DSB-SC Systems, 535 SSB Systems, 535 PM Systems, 536 FM Systems, ... output of analog communication systems • BER for digital communication systems • Fiber-optic systems • Spread-spectrum systems • AMPS, GSM, iDEN, TDMA, CDMA, WiMAX, and LTE cellular telephone systems ... wireless communication systems and includes adopted standards These essentials are • How communication systems work: Chapters through • The effect of noise: Chapters and • Wire and Wireless Communication...

Ngày tải lên: 05/04/2014, 12:54

Ngày tải lên: 20/12/2013, 19:15

... powers in optical communication systems are typically below 10 mW, SRS is not a limiting factor for single-channel lightwave systems However, it affects the performance of WDM systems considerably; ... interest for optical communication systems Typical values of D are in the range 15–18 ps/(km-nm) near 1.55 µ m This wavelength region is of considerable interest for lightwave systems, since, as ... in several longitudinal modes The BL product of such lightwave systems can exceed 100 (Gb/s)-km Indeed, 1.3-µ m telecommunication systems typically operate at a bit rate of Gb/s with a repeater...

Ngày tải lên: 24/12/2013, 01:16

... Fig 9.7, and this fraction reduces to 62% when C = 0.8 416 CHAPTER SOLITON SYSTEMS 9.2.4 Soliton Transmitters Soliton communication systems require an optical source capable of producing chirpfree ... amplification schemes CHAPTER SOLITON SYSTEMS 420 Figure 9.10: (a) Lumped and (b) distributed amplification schemes for compensation of fiber losses in soliton communication systems 9.3.2 Lumped ... lightwave systems The situation changed with the advent of EDFAs around 1989 when several experiments used them for loss-managed soliton systems [38]–[40] These experiments can 426 CHAPTER SOLITON SYSTEMS...

Ngày tải lên: 21/01/2014, 06:20

Ngày tải lên: 19/02/2014, 14:20

... Internetworking to other connection technologies Fiber Channel Elements End systems - Nodes Switched elements - the network or fabric Communication across point to point links Fiber Channel Network Fiber ... Interconnected access points Software based protocol Flow control, error detection &recovery End systems connections Fiber Channel Best of both technologies Channel oriented Data type qualifiers ... ATM WAN Backbone ATM switch Single ATM switch or local network of ATM switches Workgroup ATM End systems connected directly to ATM switch Mixed system Example ATM LAN ATM LAN HUB Compatibility...

Ngày tải lên: 06/03/2014, 09:21

... gain by a factor of Example (GEO Satellite) d = 36,000 km = 36,000,000 meters fc = Ghz => λ = 0 .075 m PT = 100w, GT = 18 dB Receiver antenna is parabolic with D = meters A) What is PR? B) Suppose...

Ngày tải lên: 07/08/2014, 12:21

Ngày tải lên: 07/08/2014, 12:21

... [ln(1 + µ)]2 (µ2 E[X ] + 2µE[|X|] + 1) ˘ G(µ, X) = 3) The truncated Gaussian distribution has a PDF given by − x2 K e 2σx fY (y) = √ 2πσx where the constant K is such that K 4σx −4σx − x2 1 √ ... × 16 × 3000 = 2.1168 × 109 and the overall number of bits is 2.1168 × 109 × = 4.2336 × 109 160 Chapter Problem 7.1 The amplitudes Am take the values d Am = (2m − − M ) , m = 1, M Hence, the ... additive noise channel r = sm + n, so PM(r, sm ) = f (n)P (sm ) where f (n) is the N -dimensional PDF for the noise channel vector If the noise is AWG, then f n) = (πN0 ) − N e |r−sm |2 N0 Maximizing...

Ngày tải lên: 12/08/2014, 16:21

... coding gain is Rc d H = × 10 = (7dB) (b) The processing gain is W/R, where W = 107 Hz and R = 2000bps Hence, 107 W = = × 103 (37dB) R × 103 289 (c) The jamming margin given by (10.3.43) is PJ ... 7.14, the processing gain should be increased to W/R = (7.14) (29) = 207 Hence, the bandwidth must be increased to W = 2.07M Hz 291 Problem 10.18 (a) The length of the shift-register sequence ... 1000R = 106 Hz (b) The duty cycle of a pulse jammer for worst-case jamming is α∗ = 0.7 0.7 = = 0 .07 Eb /J0 10 The corresponding probability of error for this worst-case jamming is P2 = 0.082 0.082...

Ngày tải lên: 12/08/2014, 16:21

... frequency hopping 307 Adaptive multi rate 37, 115, 165 AFH 307 AGCH 29, 80 AICH 148 AID 227, 229 A-interface 11 Always-on 67, 69, 102 AMR 37, 115, 165 APDU 57 APN 102 21 Communication Systems for the ... beginning of this chapter, Bluetooth can be used for a great variety of applications Most applications have a server and a client side A client usually establishes the 332 Communication Systems for ... exchange the two combination key halves in clear text over the still unencrypted connection Communication Systems for the Mobile Information Society 328 Figure 6.15 Pairing procedure between two...

Ngày tải lên: 14/08/2014, 09:21

... hình analog Nếu nguồn phát máy tính, tín hiệu có dạng hình số (một tập hợp biểu tượng) Bộ mã hóa nguồn: mã hóa nguồn chuyển đổi tín hiệu sản xuất nguồn phát vào luồng liệu Nếu tín hệu đầu vào analog, ... nguồn tạo ký tự tiếng anh Lượng tin (hoặc entropy) 4 .07 bits/kí tự Theo định lý mã hóa nguồn Shannon, kí tự mã hóa theo cách ký tự chiếm 4 .07 bits Nhưng kỹ thuật mã hóa nên dùng ? Shannon không ... nguồn( Source decoder): Bộ giải mã nguồn chuyển đổi luồng bít thành thông tin thực Nếu chuyển đổi analog số thực mã hóa nguồn, chuyển đổi tín hiệu số thành tín hiệu thực giải mã nguồn Nếu ký tự...

Ngày tải lên: 18/09/2012, 10:13

... Chapter Outline Background on bonds  Treasury and federal agency bonds  Municipal bonds  Corporate...

Ngày tải lên: 17/10/2013, 11:15

... to Telecommunications, Winter 2000 Amplitude: Lecture_13 Communication Basics Frequency: Phase: Lecture 13.doc Page (9) CSN200 Introduction to Telecommunications, Winter 2000 Lecture_13 Communication ... speakers - public address systems Piezoeletric speakers - Newer telephones, toys Lecture 13.doc Page (9) CSN200 Introduction to Telecommunications, Winter 2000 Lecture_13 Communication Basics Transducers ... Page (9) CSN200 Introduction to Telecommunications, Winter 2000 Lecture_13 Communication Basics time and then changes to another constant (discrete) level Analog Signal Amplitude, A Time, t Digital...

Ngày tải lên: 10/12/2013, 08:15

... shorten the time needed to develop e-business systems that include the need for asynchronous communication Module 7: Integrating with External Systems Distributed Object Calls Topic Objective ... External Systems Asynchronous Operations: Requirements and Caveats Topic Objective To explain the requirements and caveats involved in asynchronous communication Lead-in Although using asynchronous communication ... that benefits interface-based distributed systems can be a hindrance when developing some of the flexible systems required for e-business For these systems, the data passed between client and...

Ngày tải lên: 10/12/2013, 16:16

... Chapter 6: LIS Flexible Analyses Learning the Basics of LIS Flexible Analyses Learning the Basics of LIS Flexible Analyses In this chapter you will learn about flexible ... multiple information structures and Logistics applications in a single report Reporting Made Easy Chapter 6: LIS Flexible Analyses Learning the Basics of LIS Flexible Analyses How Is LIS Flexible ... reference to either an evaluation structure or a data dictionary table Report Development Tools 6–3 Chapter 6: LIS Flexible Analyses Learning the Basics of LIS Flexible Analyses Terminology It is...

Ngày tải lên: 11/12/2013, 14:15

... h14.t80-1.St-Louis.t3.ans.net [140.223.65.14] 207 ms * 208 ms h12.t60-0.Reston.t3.ans.net [140.223.61.9] 10 338 ms 518 ms 381 ms 207. 25.134.189 11 * * * Request timed out 12 * * * Request timed out 13 207. 25.134.189 reports: ... of this era might be running any of dozens of arcane operating systems and using many communications protocols Manuals for these systems are often secret The hacker scene operates on the mentor ... were made to attack a total of 8932 systems participating in the test 7860 of those systems were successfully penetrated The management of only 390 of those 7860 systems detected the attacks, and...

Ngày tải lên: 11/12/2013, 15:15