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Galileo, the point of view of a chip manufacturer: BROADCOM

Date post: 17-Jul-2015
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1 POINT OF VIEW OF A CHIP MANUFACTURER: BROADCOM GSA Power Hour: GALILEO
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  • 1

    POINT OF VIEW OF A CHIP MANUFACTURER: BROADCOM

    GSA Power Hour: GALILEO

  • 2

    2

    ABOUT BROADCOM BROADCOM AT A GLANCE

    Source: Gartner Top 10 Semiconductor Vendors by Revenue, Worldwide, 2013. *Excluding memory companies.

    2

    Fortune 300 GLOBAL leader in semiconductors for wired and wireless communications

    One of the

    LARGEST VOLUME fabless semiconductor suppliers

    Ships ~7M chips a day

    One of the industrys broadest IP portfolios with

    >20,000 U.S. and foreign patents and applications

    One of

    TOP 5 semiconductor companies by revenue*

    HQ in Irvine, California with

    DESIGN CENTERS around the world

  • 3

    BCM4774 is the new Broadcom Location Hub chip:

    o Galileo support, in addition to GPS, GLONASS, QZSS, SBAS and BeiDou

    o A-Galileo support Long Term Orbits (LTO) for non-real time connection Assisted GNSS performance (ephemeris and time biases for all constellations)

    o On-chip position computation ; no load on the main processor of the device

    o Sensor management

    Sensor Fusion software runs on-chip and offloads main processor

    Direct hardware interfaces to sensors

    o Customer-specific software

    Downloadable to the BCM4774

    BCM4774 can replace the microcontroller in a wearable device

    BCM4774 SDK package available

    o Automotive qualified version available soon

    BCM4774: LOCATION HUB CHIP SUPPORTING GALILEO

    Sampling now!

    4774

    Production Q3 2015

    In phones: early 2016

  • 4

    WHICH DEVICES CAN USE BCM4774?

  • 5

    BCM4774: INTERCHANGEABILITY ACCOMPLISHED

    BCM4774 treats all satellite signals from any constellation equally:

    any four satellites will do to compute a fix (even the first fix!)

    First Fix with one GPS, one GLONASS, one Galileo, and one BeiDou satellite

  • 6

    BCM4774: A UNIQUE TRI-BAND FRONT END

    A/D

    A/D

    A/D

    1561.098 1575.42 1602

    Band S

    epara

    tion F

    ilters

    To

    Ba

    se

    band

    Pro

    ce

    ssin

    g

    Gain Control

    and Filters

    Gain Control

    and Filters

    Gain Control

    and Filters

    Three independent systems, if one system has errors, it is easy to identify and correct

    1561.1 1575.4 1598.1 1602 1605.9

    BeiDou (China) GPS (USA)

    Galileo (Europe) GLONASS (Russia)

  • 7

    BCM4774: GALILEO PROVIDES MORE ACCURACY

    trueposition = ( 37.391198, -121.97038, -8 )

    # of tests = 1015, Yield = 100%

    The two larger sources of error of satellite positioning are improved by Galileo:

    -1.5 -1 -0.5 0 0.5 1 1.50

    0.5

    1

    1.5

    Code offset in chips

    Mag

    nitu

    de

    GPS L1 C/A

    BOC(1,1)

    Multipath error

    Iono error

    IONO Model used Accuracy in meters (67%)

    Galileo NeQuick 3.5

    GPS Klobuchar 4.2

    No IONO model 4.6

  • 8

    +

    5

    L

    Indoor

    BCM4774 one of the first GNSS chips to support Galileo

    BROADCOM: DRIVING INNOVATION IN LOCATION TECHNOLOGY

    Outdoor

    Indoor Location

    Simultaneous Support for Multiple Constellations

    Context Awareness Sensors

    Always-on Battery Optimal

    BCM4774


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