Simulation of Third Generation CDMA Systems - Virginia Tech

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ContentsAcknowledgements1. Introduction1.1. First Generation Cellular Systems1.2. Second Generation Cellular Systems1.3. Third Generation Cellular Systems1.4. WCDMA: Air Interface for 3G1.4.1. WCDMA Key Features1.4.2. WCDMA Key Technical Characteristics1.5. Outline of Thesisiii112356772. WCDMA Physical Layer2.1. Physical Channel Structure2.1.1. Uplink Spreading and Modulation2.1.2. Downlink Spreading and Modulation2.2. Uplink Frame Structure2.3. Downlink Frame Structure2.4. Uplink Spreading Codes2.5. Uplink Scrambling Codes2.5.1. Uplink Long Scrambling Codes2.5.2. Uplink Short Scrambling Codes2.6. Downlink Scrambling Codes2.7. Summary of the WCDMA Modulation2.8. Channel Coding2.8.1. Error Detection2.8.2. Error Correction2.9. Performance Enhancing Schemes2.9.1. Adaptive Antennas99101112141518192123242525252626IV
2.9.2. Transmit Diversity Schemes2.9.3. Advanced Receiver Structure3. Simulator Description3.1. Simulator3.2. Uplink Simulator3.2.1. Desired MS3.2.2. Multiple Access Interference3.2.3. Time Varying Channel3.2.4. Addition of Noise3.2.4.1. Calibration of Noise3.2.5. Pulse Shaping3.2.6. Rake Receiver3.2.6.1. Description of the Rake Receiver3.2.7. BER Counter3.2.8. Analytical Treatment of the Uplink Simulator3.3. Downlink Simulator3.3.1. Downlink Transmitter3.3.2. MAI for Downlink3.3.3. BER Counter for Downlink3.4. Graphic User Interface (GUI) for the Simulator3.5. Code Structure of the Simulator3.6. Code Optimization272728282929303137373940414343474849494952554. Simulation Results4.1. Uplink Simulation Results4.2. Downlink Simulation Results4.3. Coded System4.4. Summary of Results57576266695. Conclusion and Future Work5.1. Future Work7071V
Page 1 and 2: Simulation of Third Generation CDMA
Page 3: AcknowledgmentsI would like to expr
Page 7 and 8: List of Tables1.1 3G Data Rate Requ
Page 9 and 10: 3.9 Implementation of Pulse shaping
Page 11 and 12: Chapter 1IntroductionThe goal for t
Page 13 and 14: 1.3 Third Generation Cellular Syste
Page 15 and 16: 1.4. WCDMA: Air Interface for 3GOne
Page 17 and 18: 1.4.2 WCDMA Key Technical Character
Page 19 and 20: Chapter 2WCDMA Physical LayerThis c
Page 21 and 22: Channelization Code(C D )cos(ω c t
Page 23 and 24: DataPilotTFCI FBI TPCT slot =2560 c
Page 25 and 26: 2.4 Uplink Spreading CodesThe sprea
Page 27 and 28: Figure 2.6: Auto-correlation for Tw
Page 29 and 30: The following block diagram shows t
Page 31 and 32: 0.180.160.140.12Probabilty Density0
Page 33 and 34: ar( 0) = 2vr( 0) + 1 (2.12)mod 4ar(
Page 35 and 36: 2.8 Channel CodingThe main purpose
Page 37 and 38: 2.9.2 Transmit Diversity SchemesTra
Page 39 and 40: These differences will become evide
Page 41 and 42: Dtoffset = 2 (3.15)cHere c is the v
Page 43 and 44: Each ray is split into two rays, on
Page 45 and 46: The pass-band of the pulse shaping
Page 47 and 48: The Rayleigh waveform is generated
Page 49 and 50: This expression can be used directl
Page 51 and 52: e -jϕ1FrameAlignmentResamplingDesc
Page 53 and 54: 3.2.7 BER CounterThe bit error rate
Page 55 and 56:
(t)R i ’(t)R i (t)e -jϕ i C SC *
Page 57 and 58:
IT+ τT + τi i i I iτ iτ iiiz =
Page 59 and 60:
3.3.2 MAI for DownlinkThe MAI in th
Page 61 and 62:
menu is provided which gives the op
Page 63 and 64:
up_sim.mpar_up.mat ovsf_gen.m scram
Page 65 and 66:
3.6 Code OptimizationThe simulator
Page 67 and 68:
Chapter 4Simulation ResultsThis cha
Page 69 and 70:
10 0 E b/N 010 -1BER10 -210 -30 int
Page 71 and 72:
10 0 Number of Interfererssf=32sf=1
Page 73 and 74:
10 0 E b/N 00 interferer2 interfere
Page 75 and 76:
10 -1 Number of InterferersBER10 -2
Page 77 and 78:
constraint length. So for a constra
Page 79 and 80:
Table 4.1: Performance Improvement
Page 81 and 82:
channel model based on measurement
Page 83 and 84:
[7] Kevin Laird, Nick Whinnet, and
Page 85:
VitaFakhrul Alam was born in Dhaka,
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