Overview of Fundamental Technologies

Why CDMA2000 at 450 MHz is such

an attractive Proposition

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Sources: www.cdg.org,

2 | CDMA & 450| March 2011

Coverage & Scalability Driven by Frequency Band - 450 MHz

Normalized Cell Count

• 450 MHz = 1

1x

&D

O B

TS

1x

&D

O B

TS

1x

&D

O B

TS

&D

O1

x&

DO

BT

S1x

&D

O B

TS

1x

&D

O B

TS

1x

&D

O B

TS

1x

&D

O B

TS

1x

&D

O B

TS

1x

&D

O B

TS

1x

&D

O B

TS

1x

&D

O B

TS

1x

&D

O B

TS

• 850 MHz = 3

• 1900 MHz = 13

1x

&D

O B

TS

&D

O1

x&

DO

BT

S

1x

&D

O B

TS

• 2100 MHz = 16

450 MHz = 49 km (7,543 km2)

850 MHz =29 km (2,642 km2)

1x

&D

O B

TS

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Sources: www.cdg.org,

3 | CDMA & 450| March 2011

Capacity in 450 MHz Spectrum - Today

UL /

DL

450

EMEA

CALA

China

450 - 467460 - 467

478 - 486488 - 496

MC EV-DO

Guard

Band

Guard

Band

1.25MHz

1X or EV-DO21 Analog Control

Channels (2.63 kHz)

185 Analog Voice

Channels (2.3 MHz)

85 Analog Voice

Channels (1 MHz)

1.25MHz

1X or EV-DO

1.25MHz

1X or EV-DO 1.25MHz

1X = 26E

Voice

1.25MHz

DO = 3.1

/1.8 Mbps&D

O1x&

DO

BT

S

21 Analog Control Channels

(2.63 kHz)

338 Analog Voice Channels (4.225 MHz)

(Legacy NMT Analog Voice)

4.5 MHz

NMT (7/21 Reuse) could support approx 10.8

Erlangs per site or 360 users

(NMT MoU Digital Interest Group 06/03)

In 5MHz CDMA can support 234 Erlangs per site or

7,800 users

Initial Analog (TACS, AMPS etc.)

• Were cumbersome

• Incompatible between counties

• Spectrally inefficient

• Lacked any high speed data capabilities

• Limited to 5 MHzNMT phone with a keyboard /

display unit

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Sources: www.cdg.org,

4 | CDMA & 450| March 2011

Capacity in 450 MHz Spectrum - Voice Tomorrow

1.25MHz

DO = 3.1

/1.8 Mbps

1X

Adv

Up to

4x 1

X C

apacity

1.25MHz

1X = 26E

Voice

1X Advanced Capacity/Coverage Improvements

• Improves call quality and reduce call drop rate for those calls that are RL limited

• Reduces required transmit power of the existing and new mobiles

• Reduces cell site power consumption; increased BTS carrier capacity & spectrum utilization

In 5MHz CDMA can support 234 Erlangs per site or 7,800 users

450 M

Hz =

49 k

m (7

,543 k

m2)

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Sources: www.cdg.org,

5 | CDMA & 450| March 2011

1C

DO

rA

0.4

Mbps

1C

DO

rA

1.1

Mbps

Capacity in 450 MHz Spectrum - Data Tomorrow

14.7

/ 5.4

Mbps

1.2

Mbps

3.6

Mbps

MC EV-DO SW supports peak data rates of 2 or 3 Times that of Individual EV-DO Rev A Carriers

• User sees improved speeds across the entire footprint, especially at the cell edge

• User Experience is more consistent across different areas of coverage

MC-EVM HW Supports 4 EV-DO Rev A Carriers on One Card

• New Peak 4.9 Mbps vs. 3.1 Mbps

• Each Carrier supports more Users/Traffic

3 Rev A SB-EVM's

& MC EV-DO SW

MC-EVM (3C's)

& MC EV-DO SW

Forward Link Peak 9.3 Mbps 14.7 Mbps

Reverse Link Peak 5.4 Mbps 5.4 Mbps

1.25MHz

DO = 3.1

/1.8 Mbps

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Sources: www.cdg.org,

6 | CDMA & 450| March 2011

Rich Eco-system for WLL and Low Cost Voice/Data

Tecc Eletronics

WeTelecom

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Sources: www.cdg.org,

7 | CDMA & 450| March 2011

Key Customer Drivers - Flexible CDMA Solutions Already Deployed

EV-DO Rev

0/A/MC

1xEV-DO

Modem

Fixed

wireless

802.11 Hot Spot

EVDO

Modem

Mobile /

Portable

data

Mobile

Voice

& Data

users

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Sources: www.cdg.org,

8 | CDMA & 450| March 2011

Closing

CDMA450 Operators are Competitive & Offer Differentiated Services

• Affordable Telephony, Internet and M2M Services Generating Substantial Earnings

CDMA Eco-system is Investing in New Products and Services

• CDMA450 WorldModeTM Devices Enable Interoperability with GSM & UMTS Networks

• Voice Capacity will Increase by 3-4X with 1X Advanced - Coverage Will Improve

• Data Capacity will Increase by 3-4X with EV-DO Rev. B

• DO Advanced – Performance Will Improve further

CDMA450 Services will Remain a Key Source of Revenue Well Into the Next Decade

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Sources: www.cdg.org,

9 | CDMA & 450| March 2011