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    Shaping the future of communications

    SOLiD ICS Repeater

    SOLiD, Inc.

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    I. SOLiD ICS Overview

    II. SOLiD ICS Value Proposition

    III. Conclusion

    Contents

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    3

      Why SOLiD ICS?

      SOLiD ICS Applications

      SOLiD ICS Key Strengths  SOLiD ICS Repeater vs. other Outdoor Repeaters

    Part 1 

    SOLiD ICS overview

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    Overview

    SOLiD Echo Cancelling Repeater is an effective on-channel RF repeater

    that prevents oscillations (Both direct & fast-fading echoes) by real-time

    cancelling. SOLiD ECR can secures high level of isolation and improves

    cell coverage by eliminating fast-fading echoes caused by fast-moving

    vehicles and environments

    Fast-fading Echoes from

    • Moving vehicles

    • Water surface like lake

    • Trees

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    Why SOLiD ICS?

    SOLiD Interference Cancellation System (ICS) Repeater has been designed to prevent oscillation

    which is the foremost drawback for RF Repeaters. It can be used in urban and suburban regions,substituting high cost optical or frequency shifting repeaters.

    By implementing DSP (Digital Signal Processing) technology, ICS repeater can secures high level

    of isolation and improves cell coverage by eliminating interferences caused by weak antenna

    isolation.

    High Gain and High Output Power Repeater

    is required?

    Selected Site Location is hard to obtain

    sufficient Antenna Isolation?

    Think about efficient Frequency Resourceusage?

    Has Operational cost (site acquisition &

    maintain) problem?

    In your Service Area, 

    SOLiD I S Repeater

    5

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    6

    ICS Repeater

    SOLiD ICS Applications

    Railway

    Sub-Urban Outdoor Regions

    Rural Outdoor Regions

    Mountainous Regions

    Highway Regions

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    Key Strengths

    Compact

    Form

    Factor

    ReduceCAPEX &

    OPEX

    Securing

    Isolation

    SOLiD ICS Key Strengths

    7

    Compact size with integrated

    modules.

    Refined design consideringeasy installation and

    environment friendly use.

    Natural air convection: No fans

    No backhaul connections.

    Minimum installation &operation costs.

    Smaller footprints, minimizingrental costs.

    Fast setup time .

    Require no specific segregationbetween donor and service

    antenna. Auto cancellation on multi path

    or feedback signals tominimize the oscillation tohappen.

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    Wireless

    b

    g

    T1/E1

    Optic Fiber

    Repeater Cell

    Repeater

    Optical Repeater SOLiD ICS Repeater

    No Optic Infra / Low Cost / Easy Installation

    RF Repeater

    Large Gain / Large Power

    SOLiD ICS Repeater

    b

    g

    T1/E1

    Repeater Cell

    Repeater

    Coverage limitation by

    Antenna Isolation

    ICS Tech. overcome coverage

    limitation by Antenna Isolation.

    Wireless

    b

    g

    T1/E1

    Repeater Cell

    Repeater

    Wireless

    b

    g

    T1/E1

    Repeater Cell

    Repeater

    SOLiD ICS Repeater vs. Other Outdoor Repeaters

    8

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      Direct feedback Cancellation

      Multi-path Fading Cancellation

      Doppler Fading Feedback Cancellation

    Part 2 

    SOLiD ICS Value Proposition

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       G  a   i  n   /   d   B 

    Isolation/dB

    Remark- Max Gain on 43dBm Repeater : 105dB

    - RF Repeater Feedback Interference

    Noise Level without degradation signal

    Quality : -20dB

    - SOLiD ICS Maximum Cancellation

    Level: 40dB

    Direct Feedback Cancellation

    10

    Outstanding cancelling performance of direct feedbacks :Active cancelling with quality of signal and excellent anti-oscillation performance 

    Isolation/dB

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    Multi-path Fading Cancellation

    Real-time adaptation of feedback cancelling performance bydynamic LMS allocations : Multi-path fading cancellation

    Conceptual diagram of SOLiD’s patented LMS algorithm

    Oscillation Criteria

    EVM Criteria

    Allocated LMS Blocks

    Vacant LMS Blocks

    Feedback Signal

    After Cancellation Curve

    11

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    Delay profile from fields 6 ~ 8 multi-paths in a real field

    More than 10 multi-path cancelling of SOLiD ICS 

    12

    Multi-path Fading Cancellation Continued)

    Direct FeedbackMulti-path Fading

    Feedback

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    Outstanding cancelling performance of high Doppler fadingfeedbacks : Active cancelling with quality of signal and excellent

    anti-oscillation performance

    Doppler Fading Feedback Cancellation

    DopplerF/B

    DopplerF/B

    DirectF/B

    DirectF/BDoppler

    F/BDoppler

    F/B

    13

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    Part 3 

    Conclusion

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    Conclusion

    Why SOLiD

    Provides market proven, optimized solutions for customers’

    networks through long period of experiences in design,

    installation, operation and maintenance

    Establishes long term business relationship by rendering

    continuously innovated solutions

    Provides training and technical support to various

    customers for installation, operation and maintenance

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    Shaping the future of communications


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