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AS.MAX Performance Airspan Marketing and Product Management May 2007 v3.0 Connecting The World

Presentacion Wimax

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Page 1: Presentacion Wimax

AS.MAX Performance

Airspan Marketing and Product ManagementMay 2007v3.0

Connecting The World

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Fixed WiMAX HiperMAX-2 & MicroMAX Urban Ranges

• The following cell radii apply for high density deployments with indoor (non-line of sight) Self-Install CPE (EasyST):

High Site (40m) HiperMAX-2 Deployment

High Site (40m) MicroMAX

Deployment

Low Site (15m) MicroMAX “In-

Fill” Deployment

Sub-Urban

1.7km 780m 570m

Dense Urban

1.3km 650m 520m

Assumptions:

SUI Model: Dense Urban = A, Sub-Urban = B3.5GHz FDD (3.5MHz channels) OperationEasy ST at 2mStandard Integral 60deg MicroMAX Antenna60deg HiperMAX Sector with 2 channel diversity75% probability of coverage at cell edge (self install model)1/16 Uplink Sub-channelisation3dB Macro Diversity allowanceCo-channel allowance: 3dB

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Burst Profiles – Capacity and Typical Range

Burst Profile Capacity (Mbps) Typical Possible Range

BPSK 1/2 Lowest capacity

Highest capacity

(3.74 * channel size over-the-air)

Longest Range

Shortest Range

QPSK 1/2

QPSK 3/4

16 QAM 1/2

16 QAM 3/4

64 QAM 2/3

64 QAM 3/4

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Fixed WiMAX HiperMAX-2 & MicroMAX Urban Ranges

• The following cell radii apply for high density deployments with indoor (non-line of sight) Self-Install CPE (EasyST):

High Site (40m) HiperMAX-2 Deployment

High Site (40m) MicroMAX

Deployment

Low Site (15m) MicroMAX “In-

Fill” Deployment

Sub-Urban

1.7km 780m 570m

Dense Urban

1.3km 650m 520m

Assumptions:

SUI Model: Dense Urban = A, Sub-Urban = B3.5GHz FDD (3.5MHz channels) OperationEasy ST at 2mStandard Integral 60deg MicroMAX Antenna60deg HiperMAX Sector with 2 channel diversity75% probability of coverage at cell edge (self install model)1/16 Uplink Sub-channelisation3dB Macro Diversity allowanceCo-channel allowance: 3dB

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Urban Deployment Scenario

• High Density 3.5GHz Urban Wireless Broadband Network Deployment using self install Indoor CPE

– HiperMAX-2 deployed on high sites providing blanket cellular coverage– MicroMAX tactically deployed on low sites for coverage in-fill

IP POP

HiperMAX

MicroMAX

2.6km 1.4km Non-LOS Cell Diameters

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Rural Deployment Scenario [1]

• Low Density 3.5GHz Rural Wireless Broadband Network Deployment using self-install Indoor CPE + Professional install Outdoor CPE

– Single High Sited (40m) HiperMAX-2 Basestation serving remote users

HiperMAX to Indoor CPE = 2km

HiperMAX to Outdoor CPE = >15km

HiperMAX-2 High Site

All ranges for non-LOS

Note:

High Sited MicroMAX gives ranges as follows:

Indoor CPE = 900mOutdoor CPE = 8.4km

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Rural Deployment Scenario [2]

• Low Density 3.5GHz Rural Wireless Broadband Network Deployment using Indoor & Outdoor CPE

– Low Sited (15m) MicroMAX Basestations serving remote users

MicroMAX Low Site

All cell diameters are for non-LOS

Note:

Low Sited HiperMAX-2 gives cell diameters as follows:

Indoor CPE = 2.3kmOutdoor CPE = 14km

Outdoor CPE: 7km

Indoor CPE: 1.2km

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WiMAX Channel Throughput

• The following maximum burst rates apply for all Fixed WiMAX (16d) systems with 3.5MHz Channels:

Modulation

Maximum Gross Burst Rate

64QAM ¾ 13.1Mbps

64QAM 2/3 11.6Mbps

16QAM ¾ 8.7Mbps

16QAM ½ 5.8Mbps

QPSK ¾ 4.4Mbps

QPSK ½ 2.9Mbps

BPSK ½ 1.5Mbps Example of how burst rate reduces with increasing path-loss (HiperMAX)

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AS.MAX Net Channel Throughput

• Two configurable parameters affect the MAC Efficiency, which relates to Net Throughput:

– Cyclic Prefix – The amount of guard time left between frames to allow for delayed multi-path components.

– Frame Size – The lower the frame size, the more significant the management overhead.

1/4 1/16 1/32

2.5ms 51% 58% 59%

8ms 84% 86% 87%

20ms 93% 94% 94%

1/4 1/16 1/32

2.5ms 48% 52% 53%

8ms 79% 81% 82%

20ms 88% 89% 89%

Cyclic Prefix

Frame Duration

Downlink Uplink

64QAM 3/4

Charts showing Maximum MAC Efficiency

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1.42-1.52

GHz TDD

3.3-3.5

GHz TDD

3.4-3.6

GHz TDD

3.6-3.8

GHz TDD

3.6-3.8

GHz FDD

(Lo, Hi)

4.9-5.0

GHz TDD

5.725-5.875

GHz TDD

5.47-5.725

GHz TDD

3.4-3.6

GHz FDD

(Lo, Hi)

5.15-5.35

GHz TDD

3.4-3.5

GHz FDD

50 MHz

AS.MAX Tip#145: MicroMAXd Frequency Bands

5.85-5/95

GHz TDD

• More Bands than any competing WiMAX Product

• 12 Frequency Bands (14 – including Lo/Hi variants)

• 4 Product Families:– MicroMAX 1.4/1.5 GHz TDD

– MicroMAX 3.X GHz TDD

– MicroMAX 3.X GHz FDD

– MicroMAX 4.9/5.X GHz TDD

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Fixed and Mobile WiMAX

Fixed WiMAX Mobile WiMAX

Standard 802.16d-2004

(802.16-2004 Base plus Corrigendum)

802.16e-2005,

Mainly the extension from 802.16e

PHY 256 FFT OFDM 512 and 1024 FFT SOFDMA

Channel Sizes 3.5 MHz, 7 MHz and 10 MHz 5 MHz and 10 MHz

Duplex Method TDD & FDD TDD only (today)

Convergence Layer Ethernet (Layer 2) IP (Layer 3)

Application Scenarios Fixed and Nomadic

- Maybe Portable

Portable and Mobile

Client Form-Factor Outdoor CPEs Indoor Desktop Modems

Laptop Card, USB Devices, Mini-PCI (for Laptops), PDAs, Handsets

Modulations 64 QAM on Uplink and Downlink 64 QAM on downlink, 16 QAM on uplink

System Features Transparent Bridging, Nomadic Roaming, Self-Install

Handover Support, Paging, Sleep Mode

CPE to Support these RF Techniques

Tx and Rx Diversity (optional)Uplink Sub-channelisation (optional)

AAS (optional)

AAS (mandatory)MIMO (mandatory)

Fixed and Mobile WiMAX are different!

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WiMAX Over-the-air Gross Data Rates at different Channel Sizes

• Relevant Modulations– BPSK, QPSK, 16-QAM, 64-QAM– Adaptive modulation – according to SNR

• Forward Error Correction (FEC) – Reed Solomon paired with Convolution Code

• Data Rates depend on the modulation and on the FEC ratio• Data Rates

– Best Spectral efficiency at 64 QAM ¾ 3.74 bit/sec/Hz which means Max over-the-air gross rate = 3.74 * Channel Size – Examples:

• 3.5 MHz 3.5 * 3.74 = 13.1 Mbps (gross, over-the-air)• FDD Base Station must be full duplex, therefore

FDD BS radio over 3.5 MHz channels supports 2 * 13.1Mbps (gross)

• 10MHz 10 * 3.74 = 37.4 Mps (gross, over-the-air)

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WirelessMAN-OFDM – Raw Data Rates (Mbps)

Modulation/ Code Rate

BPSK ½QPSK

½QPSK ¾

16QAM ½

16QAM ¾

64QAM 2/3

64QAM ¾

1.75 MHz 0.73 1.45 2.18 2.91 4.36 5.94 6.55

3.5 MHz 1.45 2.91 4.37 5.82 8.73 11.88 13.09

7.0 MHz 2.91 5.82 8.73 11.64 17.45 23.75 26.18

10.0 MHz 4.19 8.38 12.57 16.76 25.13 33.51 37.70

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WirelessMAN-OFDM – Sensitivity Thresholds (dBm)

Modulation/ Code Rate

BPSK ½QPSK

½QPSK ¾

16QAM ½

16QAM ¾

64QAM 2/3

64QAM ¾

1.75 MHz -101 -99 -97 -94 -91 -87 -85

3.5 MHz -98 -96 -94 -91 -88 -84 -82

7.0 MHz -95 -93 -91 -88 -85 -81 -79

10.0 MHz -94 -92 -90 -87 -84 -80 -78

• Subchannelization can provide additional 12dB gain in the uplink

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AS.MAX Net Channel Throughput

• Two configurable parameters affect the MAC Efficiency, which relates to Net Throughput:

– Cyclic Prefix – The amount of guard time left between frames to allow for delayed multi-path components.

– Frame Size – The lower the frame size, the more significant the management overhead.

1/4 1/16 1/32

2.5ms 51% 58% 59%

8ms 84% 86% 87%

20ms 93% 94% 94%

1/4 1/16 1/32

2.5ms 48% 52% 53%

8ms 79% 81% 82%

20ms 88% 89% 89%

Cyclic Prefix

Frame Duration

Downlink Uplink

64QAM 3/4

Charts showing Maximum MAC Efficiency

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WiMAX Channel Throughput

• The following maximum burst rates apply for all WiMAX systems with 3.5MHz Channels:

ModulationMaximum Gross

Burst Rate

64QAM ¾ 13.1Mbps

64QAM 2/3 11.6Mbps

16QAM ¾ 8.7Mbps

16QAM ½ 5.8Mbps

QPSK ¾ 4.4Mbps

QPSK ½ 2.9Mbps

BPSK ½ 1.5Mbps Example of how burst rate reduces with increasing path-loss (HiperMAX)

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WiMAX Tip #12: Over-the-air Gross Data Rates at different Channel Sizes

• Relevant Modulations– BPSK, QPSK, 16-QAM, 64-QAM– Adaptive modulation – according to SNR

• Forward Error Correction (FEC) – Reed Solomon paired with Convolution Code

• Data Rates depend on the modulation and on the FEC ratio• Data Rates

– Best Spectral efficiency at 64 QAM ¾ 3.74 bit/sec/Hz which means Max over-the-air gross rate = 3.74 * Channel Size – Examples:

• 3.5 MHz 3.5 * 3.74 = 13.1 Mbps (gross, over-the-air)• FDD Base Station must be full duplex, therefore

FDD BS radio over 3.5 MHz channels supports 2 * 13.1Mbps (gross)

• 10MHz 10 * 3.74 = 37.4 Mps (gross, over-the-air)

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Data Rates (Mbps) – Gross, Over The Air

Modulation/ Code Rate

BPSK ½QPSK

½QPSK ¾

16QAM ½

16QAM ¾

64QAM 2/3

64QAM ¾

1.75 MHz 0.73 1.45 2.18 2.91 4.36 5.94 6.55

3.5 MHz 1.45 2.91 4.37 5.82 8.73 11.88 13.10

10.0 MHz 4.19 8.38 12.57 16.76 25.13 33.51 37.40

3.74 * channelNotes:

Net Data Rates will be substantially lower

Net Data Rates will differ for different vendor implementations

Net Data Rate depends on protocol, application, packet size and other factors