Simulation of Third Generation CDMA Systems - Virginia Tech

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employing rake reception in different multipath environment is shown in Chapter four.Chapter four also shows a test case of error correction coding applied to an uplink voiceservice application of 9.6 kbps. Chapter five concludes the thesis along with providing somefuture research directions.8
Chapter 2WCDMA Physical LayerThis chapter provides a layer 1 (also termed as physical layer) description of the radio accessnetwork of a WCDMA system operating in the FDD mode. The spreading and modulationoperation for the Dedicated Physical Channels (DPCH) at both the links is illustrated in detailsince it is the most essential part of the simulator that we implemented. The uplink anddownlink data structure for the DPCHs is described. The spreading and scrambling codesused in both the links are investigated. The spreading modulation and data structure forPhysical Random Access channel (PRACH), Synchronization Channel (SCH), etc. aredescribed in detail in [5] and [6] along with those of the DPDCHs.2.1 Physical Channel StructureWCDMA defines two dedicated physical channels in both links:• Dedicated Physical Data Channel (DPDCH): to carry dedicated data generatedat layer 2 and above.• Dedicated Physical Control Channel (DPCCH): to carry layer 1 controlinformation.Each connection is allocated one DPCCH and zero, one or several DPDCHs. Inaddition, there are common physical channels defined as:9
Page 1 and 2: Simulation of Third Generation CDMA
Page 3 and 4: AcknowledgmentsI would like to expr
Page 5 and 6: 2.9.2. Transmit Diversity Schemes2.
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: 1.4.2 WCDMA Key Technical Character
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
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10 0 E b/N 010 -1BER10 -210 -30 int
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10 0 Number of Interfererssf=32sf=1
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10 0 E b/N 00 interferer2 interfere
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10 -1 Number of InterferersBER10 -2
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constraint length. So for a constra
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Table 4.1: Performance Improvement
Page 81 and 82:
channel model based on measurement
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[7] Kevin Laird, Nick Whinnet, and
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VitaFakhrul Alam was born in Dhaka,
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Simulation of Third Generation CDMA Systems - Virginia Tech

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