Smart Antenna Application In Ds Cdma Mobile Communication -Books Pdf

Smart antenna application in DS CDMA mobile communication
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NAVAL POSTGRADUATE SCHOOL,Monterey California,SMART ANTENNA APPLICATION IN DS CDMA MOBILE. COMMUNICATION SYSTEM,Kok Keng Ng,September 2002,Thesis Advisor Tri T Ha. Co Advisor Jovan Lebaric, Approved for public release distribution is unlimited. THIS PAGE INTENTIONALLY LEFT BLANK, REPORT DOCUMENTATION PAGE Form Approved OMB No 0704 0188. Public reporting burden for this collection of information is estimated to average 1 hour per response including. the time for reviewing instruction searching existing data sources gathering and maintaining the data needed and. completing and reviewing the collection of information Send comments regarding this burden estimate or any. other aspect of this collection of information including suggestions for reducing this burden to Washington. headquarters Services Directorate for Information Operations and Reports 1215 Jefferson Davis Highway Suite. 1204 Arlington VA 22202 4302 and to the Office of Management and Budget Paperwork Reduction Project. 0704 0188 Washington DC 20503, 1 AGENCY USE ONLY 2 REPORT DATE 3 REPORT TYPE AND DATES COVERED.
September 2002 Master s Thesis,4 TITLE AND SUBTITLE 5 FUNDING NUMBERS. Smart Antenna Application in DS CDMA Mobile Communication System. 6 AUTHOR S Kok Keng Ng, 7 PERFORMING ORGANIZATION NAME S AND ADDRESS ES 8 PERFORMING. Naval Postgraduate School ORGANIZATION REPORT,Monterey CA 93943 5000 NUMBER. 9 SPONSORING MONITORING AGENCY NAME S AND ADDRESS ES 10 SPONSORING MONITORING. N A AGENCY REPORT NUMBER, 11 SUPPLEMENTARY NOTES The views expressed in this thesis are those of the author and do not reflect the official. policy or position of the Department of Defense or the U S Government. 12a DISTRIBUTION AVAILABILITY STATEMENT 12b DISTRIBUTION CODE. Approved for public release distribution is unlimited. 13 ABSTRACT, This thesis examine the use of an equally spaced linear adaptive antenna array at the mobile station for a typical Direct.
Sequence Code Division Multiple Access DS CDMA cellular mobile communications system with forward error correction. with soft decision decoding is studied We analyze the performance of a randomly positioned mobile terminal with a randomly. orientated adaptive antenna array in the forward channel base station to mobile of a multi cell DS CDMA system and. established four performance boundaries Using the more conservative optimized array antenna performance boundary for the. 2 3 and 4 element linear array we compare the capacity and the performance of different cellular systems under a range of. shadowing conditions with and without antenna sectoring at the base station and for various user capacities using Monte. Carlo simulation, We further apply tapped delay line transversal filter to each antenna element channel to allow frequency dependent. amplitude and phase adjustment for broadband signals The performance of a DS CDMA cellular system with a mobile. terminal equipped with a linear array and a tapped delay line is analyzed It has been demonstrated that the optimization. process has been extremely computationally expensive and hence minimum taps should be used for practical consideration. The results illustrated that in general for a 2 element linear array system a 3 tap delay line would be sufficient to equalize the. broadband signal while providing a similar performance level to that of a narrow band adaptive array system In the case of a. 3 element linear array system a 2 tap delay line would suffice. 14 SUBJECT TERMS 15 NUMBER OF, Mobile Communications System Adaptive Antenna Linear Array DS CDMA Cellular System PAGES. Tapped Delay Line 83,16 PRICE CODE,17 SECURITY 18 SECURITY 19 SECURITY 20 LIMITATION. CLASSIFICATION OF CLASSIFICATION OF THIS CLASSIFICATION OF OF ABSTRACT. REPORT PAGE ABSTRACT,Unclassified Unclassified Unclassified UL. NSN 7540 01 280 5500 Standard Form 298 Rev 2 89,Prescribed by ANSI Std 239 18.
THIS PAGE INTENTIONALLY LEFT BLANK, Approved for public release distribution is unlimited. SMART ANTENNA APPLICATION IN DS CDMA MOBILE,COMMUNICATION SYSTEM. Kok Keng Ng,Civilian Ministry of Defense Singapore. B Eng Hons Nanyang Technological University 1994,M Sc CCN Nanyang Technological University 1999. Submitted in partial fulfillment of the,requirements for the degree of.
MASTER OF SCIENCE IN ELECTRICAL ENGINEERING,NAVAL POSTGRADUATE SCHOOL. September 2002,Author Kok Keng Ng,Approved by Tri T Ha. Thesis Advisor,Jovan Lebaric,Co Advisor,John Powers. Chairman Electrical and Computer Engineering Department. THIS PAGE INTENTIONALLY LEFT BLANK, This thesis examine the use of an equally spaced linear adaptive antenna array at the. mobile station for a typical Direct Sequence Code Division Multiple Access DS CDMA. cellular mobile communications system with forward error correction with soft decision. decoding is studied We analyze the performance of a randomly positioned mobile. terminal with a randomly orientated adaptive antenna array in the forward channel base. station to mobile of a multi cell DS CDMA system and established four performance. boundaries Using the more conservative optimized array antenna performance boundary. for the 2 3 and 4 element linear array we compare the capacity and the performance of. different cellular systems under a range of shadowing conditions with and without. antenna sectoring at the base station and for various user capacities using Monte Carlo. simulation, We further apply tapped delay line transversal filter to each antenna element channel to.
allow frequency dependent amplitude and phase adjustment for broadband signals The. performance of a DS CDMA cellular system with a mobile terminal equipped with a. linear array and a tapped delay line is analyzed It has been demonstrated that the. optimization process has been extremely computationally expensive and hence minimum. taps should be used for practical consideration The results illustrated that in general for. a 2 element linear array system a 3 tap delay line would be sufficient to equalize the. broadband signal while providing a similar performance level to that of a narrow band. adaptive array system In the case of a 3 element linear array system a 2 tap delay line. would suffice,THIS PAGE INTENTIONALLY LEFT BLANK,TABLE OF CONTENTS. I INTRODUCTION 1, II SMART ANTENNA APPLICATION IN MOBILE COMMUNICATION 5. A CO CHANNEL INTERFERENCE 5,B SECTORING 6,C SMART ANTENNA 8. D ADAPTIVE ANTENNA ARRAYS APPLICATION IN THE,FORWARD CHANNEL 11. III LINEAR ADAPTIVE ANTENNA 13,A OPTIMAL WEIGHTS 14.
B LINEAR ARRAY CONSTRAINT 17,1 Angular Spread and Null Depth 17. 2 Symmetry 22,3 Orientation Limited 23, IV FORWARD CHANNEL PROPAGATION MODEL FOR CDMA SYSTEM 25. A MEDIUM PATH LOSS 25,1 Hata Model 26,2 Lognormal Shadowing 28. B FORWARD CHANNEL MODEL 28, V PERFORMANCE ANALYSIS OF ADAPTIVE ANTENNA SYSTEM 33. VI PERFORMANCE ANAYSIS OF WIDEBAND ADAPTIVE ANTENNA. VII CONCLUSIONS AND FUTURE WORK 61,LIST OF REFERENCES 63.
INITIAL DISTRIBUTION LIST 65,THIS PAGE INTENTIONALLY LEFT BLANK. LIST OF FIGURES, Figure 2 1 Geometry of a Cellular CDMA Mobile Communication Network 6. Figure 2 2 60 and 120 Cell Sectoring 7, Figure 2 3 Probability of Bit Error for DS CDMA Using Sectoring dB 7 with. an SNR per Bit of 15 dB with Rate 1 2 Convolution Encoder with v 8. Figure 2 4 Block Diagram of an Adaptive Antenna System from 5 10. Figure 3 1 Adaptive Antenna Array Systems 13,Figure 3 2 4 Element Antenna Array Patterns 15. Figure 3 3 A 2 Element Array 17,Figure 3 4 Directional Pattern for d 1 2 18.
Figure 3 5 Directional Pattern for d 19,Figure 3 6 Directional Pattern for d 2 19. Figure 3 7 3 Element Linear Array Antenna Factor with ISR 7 21 dB and. Figure 3 8 3 Element Linear Array Antenna Factor with ISR 127 84 dB and d. Figure 3 9 Symmetry Antenna Array Pattern 22, Figure 3 10 4 Element Linear Array Antenna Factor with ISR 11 1 dB. Figure 3 11 4 Element Linear Array Antenna Factor with ISR 47 8 dB d 2. Figure 5 1 Area of Analysis within a Cell 35, Figure 5 2 Forward Channel Performance Boundaries for Our DS CDMA System. with a 4 Element Linear Adaptive Array System dB 7 Rcc 1 2. Figure 5 3 BW Boundaries for a 4 Element Adaptive Array System dB 7 Rcc. Figure 5 4 WB Performance Boundaries for our DS CDMA System with a 2. Element Linear Adaptive Array System dB 7 Rcc v 8 38. Figure 5 5 WB Performance Boundaries for our DS CDMA System with a 3. Element Linear Adaptive Array System dB 7 Rcc v 8 39. Figure 5 6 WB Performance Boundaries for our DS CDMA System with a 4. Element Linear Adaptive Array System dB 7 Rcc v 8 39. Figure 5 7 Probability of Bit Error for DS CDMA System with an SNR per Bit of. 15 dB dB 7 Rcc v 8 41, Figure 5 8 Probability of Bit Error for a 2 Element Linear Adaptive Array DS. CDMA System Using Sectoring with a SNR per Bit of 15 dB dB. 7 Rcc v 8 42, Figure 5 9 Probability of Bit Error for a 3 Element Linear Adaptive Array DS.
CDMA System Using Sectoring with a SNR per Bit of 15 dB dB. 7 Rcc v 8 42, Figure 5 10 Probability of Bit Error for a 2 Element Linear Adaptive Array DS. CDMA System Using Sectoring for dB 9 dB with a SNR per Bit of. 15 dB Rcc 1 2 and v 8 43, Figure 5 11 Probability of Bit Error for a 3 Element Linear Adaptive Array DS. CDMA System Using Sectoring for dB 9 dB with a SNR per Bit of. 15 dB Rcc 1 2 and v 8 44, Figure 5 12 Antenna Factor of the WW Case for a 4 Element Array Antenna with. Path Loss Ratio of 19 8476 45, Figure 5 13 Antenna Factor of the WW Case for a 4 Element Array Antenna at 1. Degree Offset with Path Loss Ratio of 1 0877 46, Figure 5 14 Antenna Factor of the WW Case for a 4 Element Array Antenna with.
a Path Loss Ratio of 185 6 48, Figure 5 15 Antenna Factor of the WW Case for a 4 Element Array Antenna at 1. Degree Offset with a Path Loss Ratio of 0 7950 48, Figure 5 16 Antenna Factor of the WW Case for a 4 Element Array Antenna at 2. Degree Offset with a Path Loss Ratio of 0 6293 49, Figure 5 17 System Enhancement with 3 Degree of Orientation Offset at the. Worst Worst Case for a 2 Element Array dB 7 Rcc v 8 50. Figure 5 18 System Enhancement with 1 Degree of Orientation Offset at the. Worst Worst Case for a 3 Element Array dB 7 Rcc v 8 51. Figure 5 19 System Enhancement with 1 Degree of Orientation Offset at the. Worst Worst Case for a 4 Element Array dB 7 Rcc v 8 51. Figure 6 1 Wideband K Element Array with a L Tapped Delay Line 53. Figure 6 2 Transfer Functions of the Desired Signal SBS and Interference. Signal IBS of a 2 Element Array with a 2 Tapped Delay Line. Figure 6 3 Transfer Functions of the Desired Signal SBS and Interference. Signal IBS of a 2 Element Array with a 3 Tapped Delay Line. Figure 6 4 Performance Comparison Using a 2 Element Array with a 2 and 3. Tapped Delay Line for Broadband Signal dB 7 Rcc v 8 57. Figure 6 5 Transfer Functions of the Desired Signal SBS and Interference. Signal IBS of a 3 Element Array with a 2 Tapped Delay Line. Figure 6 6 Transfer Function of the Desired Signal SBS and Interference Signal. IBS of a 3 Element Array with a 3 Tapped Delay Line System 59. Figure 6 7 Performance Comparison using a 3 Element Array with a 2 and 3. Tapped Delay Line for Broadband Signal dB 7 Rcc v 8 60. LIST OF TABLES, Table 5 1 3 Element Array Path Loss Ratio Values for Different Orientation. Offset at the WW Case 45, Table 5 2 Path Loss Ratio Values of 2 3 and 4 Element Array with Different.
Orientation Offset at the WW Case 47, Table 5 3 Linear Array System Capacity Enhancement with 5 Degree Freedom. about the WW Case Position at BER 10 3 dB 7 dB Rcc 1 2 and v.


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