DOCSLIB.ORG

Vissim/Comm User Guide

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Vissim/Comm User Guide VisSim/Comm TM User Guide Version 9.0 Eritek, Inc. Altair Engineering, Inc. i Eritek, Inc. Altair Engineering, Inc. VisSim/Comm User’s Guide - Version 9.0 Copyright © 2014 Eritek, Inc. All rights reserved. Eritek, Inc. Altair Engineering, Inc. Printed and bound in the USA. 18450 Sydnor Hill Ct. 487 Groton Road vcug-090-01 Leesburg, VA 20175 Westford, MA O1886 Trademarks VisSim is a trademark of Altair Engineering. VisSim/Comm is a joint trademark of Eritek and Altair Engineering. Other products mentioned in this manual are trademarks of their respective manufacturers. Copy and use The information in this document is subject to change without notice and restrictions does not represent a commitment by either Eritek or Altair Engineering. Eritek and Altair Engineering do not assume responsibility for errors that may appear in this document. No part of this manual may be reprinted or reproduced or utilized in any form or by any electronic, mechanical, or other means without permission in writing from Eritek. The Software may not be copied or reproduced in any form, except as stated in the terms of the Software license agreement. Use, duplication, or disclosure by the US Government is subject to restrictions as set forth in FAR 52.227-19, subparagraph (c)(i)(ii) of DOD FAR SUPP 252.227-7013, or equivalent government clause for other agencies. Portions of the Turbo Code library Copyright 2000 by Matt Valenti. ii Contents Preface ..................................................................................................... xi Online VisSim/Comm documentation ............................................................................... xi Conventions used in this manual ....................................................................................... xi For VisSim/Comm Personal Edition (PE) users ............................................................... xii Technical support service ................................................................................................ xiii Introduction .............................................................................................. 1 A typical communication system ........................................................................................ 1 Lowpass equivalent systems ............................................................................................... 3 Communication blocks ....................................................................................................... 3 VisSim/Comm Overview .......................................................................... 7 Starting VisSim/Comm ....................................................................................................... 7 The VisSim/Comm environment ........................................................................................ 7 Inserting blocks .................................................................................................... 8 Connecting blocks ................................................................................................ 8 Block connectors .................................................................................................. 8 Diagram timing .................................................................................................... 9 Random numbers .................................................................................................. 9 Setting up block parameters ............................................................................... 10 Global variables .................................................................................................. 10 Choosing an integration method ......................................................................... 11 Multirate diagrams ............................................................................................................ 11 Configuring compound blocks for local rate mode ............................................ 12 Output plots ...................................................................................................................... 12 BER curves ......................................................................................................... 12 Eye plots ............................................................................................................. 13 Frequency domain plots ..................................................................................... 13 Phase scatter plots .............................................................................................. 14 Filter Viewer ..................................................................................................................... 15 Generating BER curves .................................................................................................... 16 Enabling multiple consecutive runs .................................................................... 17 Varying the SNR for each run ............................................................................ 17 Calculating BER measurements ......................................................................... 17 Sample communication simulation ................................................................................... 19 Comm Block Set ..................................................................................... 21 Channels category ............................................................................................................. 21 AWGN (Complex or Real) ................................................................................. 21 Binary Symmetric Channel ................................................................................ 22 Jakes Mobile ....................................................................................................... 23 iii Contents Mobile Fading .................................................................................................... 23 Multipath ............................................................................................................ 24 Propagation Loss ................................................................................................ 25 Rice/Rayleigh Fading ......................................................................................... 26 Rummler Multipath ............................................................................................ 26 Saleh-Valenzuela ................................................................................................ 27 TWTA (Analytical) ............................................................................................ 29 TWTA (Table Lookup) ...................................................................................... 31 Vector AWGN .................................................................................................... 31 Complex Math category ................................................................................................... 32 Complex Addition .............................................................................................. 32 Complex Conjugate ............................................................................................ 32 Complex Division .............................................................................................. 32 Complex Inverse ................................................................................................ 32 Complex Multiplication ..................................................................................... 33 Complex Power .................................................................................................. 33 Complex Square Root ........................................................................................ 33 Complex to Mag/Phase ...................................................................................... 33 Complex to Real/Imag........................................................................................ 33 Mag/Phase to Complex ...................................................................................... 34 Real/Imag to Complex........................................................................................ 34 Demodulators category ..................................................................................................... 34 Differential PSK Detector .................................................................................. 34 FM Demodulator ................................................................................................ 35 IQ Detector ......................................................................................................... 35 PPM Demodulator .............................................................................................. 36 PSK Detector ...................................................................................................... 37 QAM/PAM Detector .......................................................................................... 37 Digital category ................................................................................................................ 38 Accumulate & Dump ......................................................................................... 38 Binary Counter ................................................................................................... 39 Bits to Symbol ...................................................................................................
Load more

Recommended publications
  • Costas Phase Locked Loop for Bpsk Detection 2008
    COSTAS PHASE LOCKED LOOP FOR BPSK DETECTION A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science in Engineering by RAJESH KUMAR KEREGUDADHAHALLI Bachelor of Engineering in Electronics and Communications Visvesvaraiah Technological University, Bangalore, India 2005 2008 Wright State University WRIGHT STATE UNIVERSITY SCHOOL OF GRADUATE STUDIES August 25, 2008 I HEREBY RECOMMEND THAT THE THESIS PREPARED UNDER MY SUPERVISION BY RAJESH KUMAR KEREGUDADHAHALLI ENTITLED Costas Phase Locked Loop For BPSK Detection BE ACCEPTED IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF Master of Science in Engineering. Raymond E. Siferd, Ph.D. Thesis Director Kefu Xue, Ph.D. Chair, Dept. of Electrical Engineering Committee on Final Examination Raymond E. Siferd, Ph.D. Professor Emeritus, Dept. of Electrical Engineering Marian K. Kazimierczuk, Ph.D. Professor, Dept. of Electrical Engineering John M. Emmert, Ph.D. Associate Professor, Dept. of Electrical Engineering Joseph F. Thomas, Jr., Ph.D. Dean, School of Graduate Studies Abstract Keregudadhahalli, Rajesh Kumar. M.S. Egr., Department of Electrical Engineering, Wright state University, 2008. Costas Phase Locked Loop for BPSK Detection. A 2GHz carrier recovery Costas Loop based BPSK detector is designed using CMOS 0.18µm technology. The designed BPSK detector consists of single to differential conversion circuit, phase/frequency detector, Voltage Controlled Oscillator, differential to single conversion circuit, first order loop filter and a third multiplier. Different architectures available for each block have been discussed along with the design methodology adopted. The schematics were simulated in analog design environment. The Costas loop presented in this work can sense both 0˚ and 180˚ phases at its input.
    [Show full text]
  • Amplitude Modulation
    mywbut.com Chapter 5 Amplitude Modulation Amplitude modulation was historically the first modulation developed and conceptually the simplest to understand. Consequently this modulation is developed first. 5.1 Linear Modulation The simplest analog modulation is to make Γm (m(t)) = Acm(t), i.e., a linear function of the message signal. The complex envelope and the spectrum of this modulated signal are given as 2 xz(t)=Acm(t) Gxz (f)=Ac Gm(f). This modulation has xI (t)=Acm(t) and xQ(t) = 0, so the imaginary portion of the complex envelope is not used in a linear analog modulation. The resulting bandpass signal and spectrum are given as √ √ xc(t)= 2xz(t) exp[j2πfct] = Acm(t) 2 cos(2πfct) (5.1) A2 A2 A2 A2 G (f)= c G (f − f )+ c G (−f − f )= c G (f − f )+ c G (f + f ) (5.2) xc 2 m c 2 m c 2 m c 2 m c where the fact that m(t) was real was used to simplify (5.2). Fig. 5.1 shows the√ complex envelope and an example bandpass signal for the message signal shown in Fig. 4.1 with Ac =1/ 2. It is quite obvious from Fig. 5.1 that the amplitude of the carrier signal is modulated directly proportional to the absolute value of the message signal. Fig. 5.2 shows the resulting energy spectrum of the linearly modulated signal for the message signal shown in Fig. 4.2. A very important characteristic of this modulation is that if the message signal has a bandwidth of W Hz then the bandpass signal will have a transmission bandwidth of BT =2W .
    [Show full text]
  • Costas PLL Loop System for BPSK Detection
    Wright State University CORE Scholar Browse all Theses and Dissertations Theses and Dissertations 2008 Costas PLL Loop System for BPSK Detection Rajesh Kumar Keregudadhahalli Wright State University Follow this and additional works at: https://corescholar.libraries.wright.edu/etd_all Part of the Electrical and Computer Engineering Commons Repository Citation Keregudadhahalli, Rajesh Kumar, "Costas PLL Loop System for BPSK Detection" (2008). Browse all Theses and Dissertations. 863. https://corescholar.libraries.wright.edu/etd_all/863 This Thesis is brought to you for free and open access by the Theses and Dissertations at CORE Scholar. It has been accepted for inclusion in Browse all Theses and Dissertations by an authorized administrator of CORE Scholar. For more information, please contact [email protected]. COSTAS PHASE LOCKED LOOP FOR BPSK DETECTION A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science in Engineering by RAJESH KUMAR KEREGUDADHAHALLI Bachelor of Engineering in Electronics and Communications Visvesvaraiah Technological University, Bangalore, India 2005 2008 Wright State University WRIGHT STATE UNIVERSITY SCHOOL OF GRADUATE STUDIES August 25, 2008 I HEREBY RECOMMEND THAT THE THESIS PREPARED UNDER MY SUPERVISION BY RAJESH KUMAR KEREGUDADHAHALLI ENTITLED Costas Phase Locked Loop For BPSK Detection BE ACCEPTED IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF Master of Science in Engineering. Raymond E. Siferd, Ph.D. Thesis Director Kefu Xue, Ph.D. Chair, Dept. of Electrical Engineering Committee on Final Examination Raymond E. Siferd, Ph.D. Professor Emeritus, Dept. of Electrical Engineering Marian K. Kazimierczuk, Ph.D. Professor, Dept. of Electrical Engineering John M. Emmert, Ph.D.
    [Show full text]
  • Vissim/Comm TM User Guide
    VisSim/Comm TM User Guide Version 8.0 Eritek, Inc. i Eritek, Inc. Visual Solutions, Inc. VisSim/Comm User’s Guide - Version 8.0 Copyright © 2011 Eritek, Inc. All rights reserved. Eritek, Inc. Visual Solutions, Inc. Printed and bound in the USA. 18450 Sydnor Hill Ct. 487 Groton Road vcug-080-01 Leesburg, VA 20175 Westford, MA O1886 Trademarks VisSim is a trademark of Visual Solutions. VisSim/Comm is a joint trademark of Eritek and Visual Solutions. Other products mentioned in this manual are trademarks of their respective manufacturers. Copy and use The information in this document is subject to change without notice and restrictions does not represent a commitment by either Eritek or Visual Solutions. Eritek and Visual Solutions do not assume responsibility for errors that may appear in this document. No part of this manual may be reprinted or reproduced or utilized in any form or by any electronic, mechanical, or other means without permission in writing from Eritek. The Software may not be copied or reproduced in any form, except as stated in the terms of the Software license agreement. Use, duplication, or disclosure by the US Government is subject to restrictions as set forth in FAR 52.227-19, subparagraph (c)(i)(ii) of DOD FAR SUPP 252.227-7013, or equivalent government clause for other agencies. ii Contents Preface ...................................................................................................... x Online VisSim/Comm documentation ...............................................................................
    [Show full text]
  • FREQUENCY ACQUISITION TECHNIQUES for PHASE LOCKED LOOPS IEEE Press 445 Hoes Lane Piscataway, NJ 08854
    FREQUENCY ACQUISITION TECHNIQUES FOR PHASE LOCKED LOOPS IEEE Press 445 Hoes Lane Piscataway, NJ 08854 IEEE Press Editorial Board John B. Anderson, Editor in Chief R. Abhari G. W. Arnold F. Canavero D. Goldgof B-M. Haemmerli D. Jacobson M. Lanzerotti O. P. Malik S. Nahavandi T. Samad G. Zobrist Kenneth Moore, Director of IEEE Book and Information Services (BIS) FREQUENCY ACQUISITION TECHNIQUES FOR PHASE LOCKED LOOPS DANIEL B. TALBOT Cover Image: Courtesy of Daniel B. Talbot Copyright # 2012 by The Institute of Electrical and Electronics Engineers, Inc. Published by John Wiley & Sons, Inc., Hoboken, New Jersey. All rights reserved Published simultaneously in Canada No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, scanning, or otherwise, except as permitted under Section 107 or 108 of the 1976 United States Copyright Act, without either the prior written permission of the Publisher, or authorization through payment of the appropriate per-copy fee to the Copyright Clearance Center, Inc., 222 Rosewood Drive, Danvers, MA 01923, (978) 750-8400, fax (978) 750-4470, or on the web at www.copyright.com. Requests to the Publisher for permission should be addressed to the Permissions Department, John Wiley & Sons, Inc., 111 River Street, Hoboken, NJ 07030, (201) 748-6011, fax (201) 748-6008, or online at http://www.wiley.com/go/permission. Limit of Liability/Disclaimer of Warranty: While the publisher and author have used their best efforts in preparing this book, they make no representations or warranties with respect to the accuracy or completeness of the contents of this book and specifically disclaim any implied warranties of merchantability or fitness for a particular purpose.
    [Show full text]