lectureAll_ece5325_6325_s10

lectureAll_ece5325_6325_s10 - ECE 5325/6325: Wireless...

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Unformatted text preview: ECE 5325/6325: Wireless Communication Systems Lecture Notes, Spring 2010 Prof. Neal Patwari University of Utah Department of Electrical and Computer Engineering c circlecopyrt 2010 ECE 5325/6325 Spring 2010 2 Contents 1 Cellular Systems Intro 5 1.1 Generation Zero . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1.2 Cellular . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 1.3 Key Terms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 1.4 The Cellular Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2 Frequency Reuse 8 2.1 Cellular Geometry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 2.1.1 Channel Assignment within Group . . . . . . . . . . . . . . . . . . . . . . . . 9 2.2 Handoff . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 2.3 Co-Channel Interference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 2.3.1 Downtilt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 2.4 Adjacent Channel Interference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 3 Trunking 14 3.1 Blocked calls cleared . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 3.2 Blocked calls delayed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 3.3 Discussion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 4 Increasing Capacity and Coverage 16 4.1 Sectoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 4.2 Microcells . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 4.3 Repeaters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 4.4 Discussion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 5 Free Space Propagation 18 5.1 Received Power Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 5.2 Antennas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 5.3 Power Flux Density . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 6 Large Scale Path Loss Models 22 6.1 Log Distance Path Loss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 6.2 Multiple Breakpoint Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 7 Reflection and Transmission 24 8 Two-Ray (Ground Reflection) Model 26 8.1 Direct Path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 8.2 Reflected Path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 8.3 Total Two-Ray E-Field . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 9 Cellular Large Scale Path Loss Models 27 9.1 Okumura-Hata Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 10 Exam 1 29 ECE 5325/6325 Spring 2010...
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This note was uploaded on 02/25/2011 for the course ECE 6325 taught by Professor Dr.nealpatwari during the Spring '10 term at University of Utah.

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lectureAll_ece5325_6325_s10 - ECE 5325/6325: Wireless...

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