CDA EVM9 Manuel d'utilisateur

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Air Interface - Time Slot FormatAir Interface - Time Slot Format8

Air Interface - Spectrum• EDGE is spectrum compatible with GSM, i.e. it uses the same 200 kHz channel spacingGSM Air Interface• Uses 0.3GMSK modulatio

EDGE Air Interface - Modulation• 8-PSK modulation is used for high data rates• Signal trajectory will pass through the origin• High peak-to-average ra

GMSK Modulation constellations1. EDGE coding schemes MCS1-4 (this is not the same as GPRS CS1-4)2. Uses GMSK modulation 3. 1 bit per symbol4. Constant

EDGE :Packet HandlingEDGE: Packet Handling•Another improvement that has been made to the EDGE standard is the ability to retransmit a packet that has

Link Quality Control:LA (Link Adaptation)– select the MCS that gives a maximum throughput for certain C/IIR (Incremental Redundancy)– Packet is sent

Link Adaptation. Example• MCS-9 carries 2 RLC blocks @ 74 byte each• Retransmission using MCS-6• For further retransmission, 74byte block will besegme

Incremental RedundancyThe purpose of incremental redundancy is to increase throughput by minimising the amount of redundant data sent OTA by:• Only se

Incremental Redundancy – Example using MCS-9• The original data is 1/3 coded and then punctured in three ways. The first TX is sent if in error 2nd is

II. Design Challenges in EDGE MobileMMIProtocolModemRFDSPmicro-controllerAll of the considerations which previously applied to GPRS also apply to EGP

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There are also new or more complex considerations for 8PSK and EGPRS:• (TX) Amplifier linearity, efficiency - thermal/battery again, but this time MU

2. Non-Linearity of modulation (EDGE)• with EDGE, overcome non-linearity by using (1) feedback or (2) pre-distortion or (3) both• most techniques re

There are also new test considerations for EDGE• Receiver must now demodulate 8PSK - BER/BLER• New Test Connection type – SRB• Possible asymmetric cod

GSM/GPRS GMSK EGPRS 8PSKOutput Power over useful part of burst Not data dependent Use Random Data Spectrum due to Modulation Yes Different Mask (one

GMSKMeasurements – Tx Power and Power Vs Time8PSK using real deviceMeasurements – Tx Power and Power Vs Time22

• GMSK PFER - Constant amplitude, simple phase rotation, phase and frequency measurement• EDGE 8PSK Modulation Accuracy• Amplitude component added to

Measurements – Mod AccBit Error Rate (BER)• Instrument sends data to device, device loops back data, sent/received data is compared in instrument and

• EGPRS can have different modulation formats (GMSK/8PSK) on uplink and downlink• Not generally practical for manufacturing test, and does not need to

Data Connection Type - SRB3GPP TS 04.14 V8.4.0 (2002-07), Release 1999, Section 5.5How does Agilent BLER operate, why does this affect 8PSK measuremen

How does Agilent BLER operate, why does this affect 8PSK measurements? • 3. To generate a measurable uplink, the mobile station is polledevery block (

UnderstandingEDGETechnologyfor mobile designMichael Leung Chartered Engineer, M.I.E.E.Senior Application ConsultantWireless Communicationmichael-hf_le

1.GSM/GPRS/EGPRS Test Strategy1. Testing GSM only, do not test GPRS/EGPRS- There are many changes in physical layers in GPRS.( e.g. PLL/LO timing, 2

GSM/GPRS Test StrategyTypical GSM Test plan- Under dual-band or tri-band modeLower Channel : TX + RX testsMiddle Channel: Major TX tests Upper Cha

1㪘㪾㫀㫃㪼㫅㫋㩷㪫㪼㫊㫋㩷㪪㫆㫃㫌㫋㫀㫆㫅㩷㪧㫉㫆㫍㫀㪻㪼㫊㩷㪜㪽㪽㫀㪺㫀㪼㫅㫋㩷㪩㪝㩷㪚㫆㫅㪽㫆㫉㫄㪸㫅㪺㪼㫆㪽㩷㪮㪄㪚㪛㪤㪘㩷㪟㪸㫅㪻㫊㪼㫋Agilent Template Tutorial15 April, 2002Agilent RestrictedPage 2AgendaRequirem

2Agilent Template Tutorial15 April, 2002Agilent RestrictedPage 3Requirements for RF Parametric Test SolutionsSupport of multiple radio technologies on

3Agilent Template Tutorial15 April, 2002Agilent RestrictedPage 5Technical Issues in RF Parametric TestWide frequency range and wide dynamic range for

4Agilent Template Tutorial15 April, 2002Agilent RestrictedPage 7New Frequency Assignment for W-CDMA in 800MHz Band (Band VI)䇭䇭Band VI was newly assign

5Agilent Template Tutorial15 April, 2002Agilent RestrictedPage 9Hard Handover using Compressed modeFrame 1 Frame 2 Frame 4Transmit PowerFrame 3 inComp

6Agilent Template Tutorial15 April, 2002Agilent RestrictedPage 115.7 Power Setting in uplink compressed modeThis test case requires to measure UE tran

7Agilent Template Tutorial15 April, 2002Agilent RestrictedPage 13Triggers are generated at the timing of CFN0, CFN3 and CFN6 from System SimulatorUEEx

8Agilent Template Tutorial15 April, 2002Agilent RestrictedPage 15Actual Measurement Example of Uplink Compressed modePattern A Test (CFN0,1,2)TPC:01--

I. What is EDGE? (Enhanced Data GSM Evolution)http://www.gsmworld.com/technology/edge/operators.shtmlEDGE Business Potential ?!2

9Agilent Template Tutorial15 April, 2002Agilent RestrictedPage 17UMTS-FDD Band II䋬III䋬IV䋬V and VIGS-8800 is covering all UMTS-FDD bands (I ~ VI)GSM Mo

10Agilent Template Tutorial15 April, 2002Agilent RestrictedPage 19RF Interface: Conceptual DiagramE8247C PSGE4445A PSAE5515C RFTest SetE4438C ESGTAS 4

11Agilent Template Tutorial15 April, 2002Agilent RestrictedPage 21System RF Path Loss Management from 9kHz to 12.75GHzRequirements from standard core

12Agilent Template Tutorial15 April, 2002Agilent RestrictedPage 23Last Feet is the Most Important, thoughFixturing and characterization of fixture are

13Agilent Template Tutorial15 April, 2002Agilent RestrictedPage 25GS-8800 System HardwareSignalAnalysis(E4445A PSA)Out-of-BandInterference(E8247C PSG)

14Agilent Template Tutorial15 April, 2002Agilent RestrictedPage 27GS-8800 GCF W-CDMA Validation ScheduleGCF Certification Target- Current available te

www.agilent.com.twڶᣂڜ൸଩ઝݾሽ՗ၦྒྷข঴Εᚨش֗ࣚ೭ऱᇡาᇷಛΔױ਷ᇬݺଚऱጻీࢨࠐሽ੓ᇬΖઔಘᄎᝑᆠՀሉΚwww.agilent.com.tw/find/handouts؀᨜ڜ൸଩ઝݾैٝڶૻֆ׹؀קؑ104 ༚ᘋতሁԫ੄2 ᇆ8 ᑔሽᇩΚ(02) 8772-5888௒Ⴜᗼؓ

EDGE As An Evolution Path to 3G• EDGE was first proposed to ETSI • Feasibility study was completed in 1997 and approved by ETSI• EDGE satisfies the 38

EDGE Architectures & Interfaces EDGE Outdoor Base StationUser Plane Protocols (Not much changes!)•The protocols that are influenced by the

Changes!! Air Interface• GMSK modulation is maintained for certain data rates• 8-PSK modulation with 3 /8 rotation per symbol is used for higher da

• After a certain operating point (SIR level), GPRS transmission rate saturates. So, EDGE introduces a new modulation scheme (8-PSK) to drive data rat

Coding Scheme Comparison•The graph shows both GPRS and EDGE coding schemes with their max. throughputs.• GPRS user throughput reaches saturation at a