MagicBubble ™ ©1999-2000, All Rights Reserved MagicBubble, Inc. Proprietary Turn Sound On Go to next slide to begin automa...
In the year 2001, there will be an alternative  to a complex, and out-of-control world. MagicBubble Video
MagicBubble ™ Introduction ©2000, All Rights Reserved MagicBubble, Inc. Proprietary
MagicBubble  Capabilities <ul><li>A  >50 Mbps   indoor wireless communications capability, supports  ubiquitous  multimedi...
Target Market  Internet Appliance Networking <ul><li>High-speed access to the home & small office ( the last mile )‏ </li>...
The “Internet of the Future…”   Exclusively Provided By MagicBubble <ul><ul><li>Lower Cost </li></ul></ul><ul><ul><li>High...
<ul><li>Access Point  - Modular & Upgradable </li></ul><ul><li>Information Appliance  - Leverages existing Web Pad referen...
<ul><li>MB can address a full spectrum of in-building appliances and needs </li></ul><ul><ul><li>High data access </li></u...
MagicBubble ™ The Technical Advantage ©2000, All Rights Reserved MagicBubble, Inc. Proprietary
<ul><li>802.11, Bluetooth, HomeRF, etc., uses small wavelengths (i.e. 2.4GHz)‏ </li></ul>Today’s Wireless Solutions Walls ...
MagicBubble Coverage Walls don’t  increase path loss No reflections, no “Swiss cheese” coverage People don’t block path
Why? Because Radio Propagates Conventional Wireless Radio <ul><li>Like a ripple in a pond the strength of the wave suffers...
MagicBubble Technology An Unfair Sustainable Advantage Over the Competition <ul><li>A  patent-pending  method which  </li>...
Technical Overview (subset)‏ click to next page ©2000, All Rights Reserved MagicBubble, Inc. Proprietary
The Bubble is... <ul><li>… the physical layer of an integrated, indoor communications network operating in the FCC Part 15...
MagicBubble – Characteristics  <ul><li>100:1 frequency spread exhibits different characteristics at each end </li></ul><ul...
The Important Principles <ul><li>1. Low operating frequencies </li></ul><ul><ul><li>   wavelengths >> structure apertures...
Important Principles – Non-interfering System <ul><li>MagicBubble is a non-radiating system that operates only within its ...
Important Principles (continued)‏ <ul><li>Waveguide-type structures normally have high-pass characteristics </li></ul><ul>...
Architecture   Frequency Plans   Modulation and Coding     Access Protocols
Development Considerations  <ul><li>Requirements </li></ul><ul><ul><ul><li>High isolation between receive / transmit chann...
MagicBubble Architecture Hardware Bubble Hub & external interface connections; Bubble-compliant devices Coverag e Interior...
Overview - Network Structure External Interfaces Access Point (Hub + Exciter)‏ Bubble Volume Phone DSL Cable Satellite HVA...
Overview - Network Structure (continued)‏ … each piece of which re-couples energy to other nearby elements, setting up a c...
Overview - Network Structure (continued)‏ Any device in the volume capable of receiving (demodulating and decoding) the si...
Bubble Formation (continued)‏ <ul><li>The Bubble network fills the entire physical volume, everywhere </li></ul><ul><li> ...
Top-Level Frequency Plan Frequency Plan  (not to scale)‏ Non-restricted bands in FCC unlicensed 0.5 to 54–MHz frequency ra...
Application & Characteristics    LOWER HIGHER    No. of Devices Usage / duty cycle BW / data rate Power consumption Cavi...
Application & Characteristics (continued)‏ Longer wavelengths, more near-field characteristics; lower data capacity and ac...
Application & Characteristics (continued)‏ No. of Devices Usage / duty cycle BW / data rate Power consumption Cavity leaka...
Application & Characteristics (continued)‏ <ul><li>Conclusion for Frequency Planning </li></ul><ul><li>Low-High Frequency ...
Application & Characteristics (continued)‏ <ul><li>Frequency Planning (continued )‏ </li></ul><ul><li>Allocate low-range f...
Summary Fewer devices Broadband High duty cycles TRADE SPACE Large numbers Low  rates Low  duty cycles Broadband Plan Base...
MagicBubble Architecture (continued)‏ Access Protocol Different requirements for different applications; desirable to have...
Video  Embedded or add-on module for TV or set-top box that enables Bubble hub to distribute CATV MPEG video  <ul><li>Down...
Video - General Requirements Bubble RF in ADC Symbol Sync EQ Carrier removal Symbol proc bit stream output Processor I/F N...
Primary Requirements <ul><li>RF </li></ul><ul><ul><li>Receive up to six RF channels </li></ul></ul><ul><ul><ul><li>6 MHz R...
Functional Block Diagram … host power availability assumed … wideband, direct conversion software radio … single antenna, ...
Cost Estimate Antenna Package / assembly AC/DC converter ass’y RF/tuner ass’y  /chip DSP modem Interface ass’y / chip Low ...
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MagicBubble Slide show

  1. 1. MagicBubble ™ ©1999-2000, All Rights Reserved MagicBubble, Inc. Proprietary Turn Sound On Go to next slide to begin automatic presentation
  2. 2. In the year 2001, there will be an alternative to a complex, and out-of-control world. MagicBubble Video
  3. 3. MagicBubble ™ Introduction ©2000, All Rights Reserved MagicBubble, Inc. Proprietary
  4. 4. MagicBubble Capabilities <ul><li>A >50 Mbps indoor wireless communications capability, supports ubiquitous multimedia access and control for all kinds of devices </li></ul><ul><li>MagicBubble has much greater quality and performance than these other technologies, at a fraction of the cost </li></ul><ul><li>Today’s wireless technologies suffer from high costs and low quality and performance compared to wired technology </li></ul><ul><li>MagicBubble expands the benefits of wireless connectivity to new market areas </li></ul>
  5. 5. Target Market Internet Appliance Networking <ul><li>High-speed access to the home & small office ( the last mile )‏ </li></ul><ul><ul><li>Nearly 20% of US homes will have broadband Internet by 2003 </li></ul></ul>“ We’re moving to a world where the Internet doesn’t just connect computers, it connects things, it connects people.” - Wind River Systems founder, Jerry Fiddler <ul><li>High-speed access throughout ( the last inch )‏ </li></ul><ul><li>Appliances are becoming smarter and smarter </li></ul><ul><li>Market Projected to be $3 Billion in 2005 </li></ul>
  6. 6. The “Internet of the Future…” Exclusively Provided By MagicBubble <ul><ul><li>Lower Cost </li></ul></ul><ul><ul><li>Higher Performance </li></ul></ul><ul><ul><li>Ubiquitous coverage (every last inch)‏ </li></ul></ul>MagicBubble is the only solution that meets all of the requirements of an Internet Appliance Network. Internet Appliance Network (5-node) Comparison $50 $100 $150 $200 $250 $300 $350 Cost Performance Low High MagicBubble Proxim X10 Bluetooth Sharewave coverage
  7. 7. <ul><li>Access Point - Modular & Upgradable </li></ul><ul><li>Information Appliance - Leverages existing Web Pad reference design & consumer OS. </li></ul><ul><li>Appliance Modules - Client radio modems. </li></ul><ul><li>Original Equipment Manufacturer (OEM) alliances </li></ul><ul><ul><li>toolkit to support integrated devices </li></ul></ul>The I 2 I Product Base Components Exciter 24” Printed Circuit Scimitar Access Point Router (802 gateway)‏ BubbleLink Network Layer Hemispherical Housing Power Cord / Exciter Ground Printed Circuit Scimitar / Base TV Module adaptor
  8. 8. <ul><li>MB can address a full spectrum of in-building appliances and needs </li></ul><ul><ul><li>High data access </li></ul></ul><ul><ul><ul><li>Home theater </li></ul></ul></ul><ul><ul><ul><li>Whole-house audio/video </li></ul></ul></ul><ul><ul><ul><li>Surveillance </li></ul></ul></ul><ul><ul><ul><li>Browsing </li></ul></ul></ul><ul><ul><ul><li>Intercom </li></ul></ul></ul><ul><ul><ul><li>Paging (Voice)‏ </li></ul></ul></ul><ul><ul><ul><li>High-speed Internet </li></ul></ul></ul><ul><ul><li>Low data access </li></ul></ul><ul><ul><ul><li>Alarm systems (e.g. window sensor) </li></ul></ul></ul><ul><ul><ul><li>Cooking (e.g. Microwave oven)‏ </li></ul></ul></ul><ul><ul><ul><li>HVAC </li></ul></ul></ul><ul><ul><ul><li>Lighting control </li></ul></ul></ul><ul><ul><ul><li>Locks </li></ul></ul></ul>Application Possibilities <1kbps burst Increasing Bandwidth, QOS, and Isochronous Network Needs >6Mbps Isochronous
  9. 9. MagicBubble ™ The Technical Advantage ©2000, All Rights Reserved MagicBubble, Inc. Proprietary
  10. 10. <ul><li>802.11, Bluetooth, HomeRF, etc., uses small wavelengths (i.e. 2.4GHz)‏ </li></ul>Today’s Wireless Solutions Walls increase path loss Reflections cause “Swiss cheese” coverage People block path
  11. 11. MagicBubble Coverage Walls don’t increase path loss No reflections, no “Swiss cheese” coverage People don’t block path
  12. 12. Why? Because Radio Propagates Conventional Wireless Radio <ul><li>Like a ripple in a pond the strength of the wave suffers energy loss at a rate proportional to the square of the distance traveled. This assumes an ideal (obstruction free) world </li></ul>wavelength <ul><li>Within buildings, an ideal world does not exist </li></ul><ul><li>Wavelength matters! </li></ul><ul><ul><li>short waves suffer greater loss </li></ul></ul><ul><ul><li>require more complex solutions </li></ul></ul><ul><li>Bandwidth limitations are pushing indoor wireless technologies to smaller wavelengths (i.e. 900MHz to 2.4GHz to 5.8GHz)‏ </li></ul>&quot;Any sufficiently advanced technology is indistinguishable from magic.” - Arthur Clarke Traveling waves Long Wavelength (MagicBubble)‏ Shorter Wavelengths (used by Bluetooth, 802.11...)‏ No Blockage No Scatter No Multipath Blockage Scatter Multipath
  13. 13. MagicBubble Technology An Unfair Sustainable Advantage Over the Competition <ul><li>A patent-pending method which </li></ul><ul><ul><li>Establishes a non-propagating ubiquitous electromagnetic field (“cavity”) extending throughout a structure </li></ul></ul><ul><ul><li>The cavity is formed by driving an exciter against the ground shields in the electrical service. The excited ground system forms a cage which shields against man made and galactic noise </li></ul></ul><ul><li>It is user friendly - easy to install and free of cumbersome wiring </li></ul><ul><li>Simple, low-cost all-digital radios </li></ul><ul><ul><li>A fraction of the cost than higher frequency radios </li></ul></ul><ul><li>Experimental work has been performed confirming it works and complies with Part 15 of the FCC regulations </li></ul><ul><li>Market potential is huge ... </li></ul>free standing waves MagicBubble 33 to 38 dB Free Space Indoor Average @ 5.85 GHz
  14. 14. Technical Overview (subset)‏ click to next page ©2000, All Rights Reserved MagicBubble, Inc. Proprietary
  15. 15. The Bubble is... <ul><li>… the physical layer of an integrated, indoor communications network operating in the FCC Part 15 frequency range of 0.5 to 54 MHz… </li></ul><ul><li>… a contained, modulated standing-wave operating at long wavelengths in a physical volume formed by the conductive portions of a residence, building or ship’s structure… </li></ul><ul><li>… a straightforward way of connecting all computers, peripherals, sensors, appliances, etc. in a home, warehouse, office building, ship, etc. to a central interface point for integrated communications with all other devices in the network </li></ul><ul><li>… without wires and cables </li></ul><ul><li>… without outside noise and interference </li></ul><ul><li>… regardless of physical location, distribution, configuration or orientation of communicating devices </li></ul>
  16. 16. MagicBubble – Characteristics <ul><li>100:1 frequency spread exhibits different characteristics at each end </li></ul><ul><ul><li>Therefore two different application ranges and… </li></ul></ul><ul><ul><li>… two different modulation / access approaches </li></ul></ul><ul><li>Characteristics common to both segments </li></ul><ul><ul><li>Indoor network </li></ul></ul><ul><ul><li>Long-wavelength </li></ul></ul><ul><ul><li>High S/N </li></ul></ul><ul><li>Small antennas </li></ul><ul><ul><li>Efficiency of small antennas in low-frequency ranges drives architecture development </li></ul></ul><ul><ul><li>Desirable to transmit on higher frequencies where antenna efficiencies are higher (   f c 2 )‏ </li></ul></ul>
  17. 17. The Important Principles <ul><li>1. Low operating frequencies </li></ul><ul><ul><li> wavelengths >> structure apertures </li></ul></ul><ul><ul><li> field energy constrained within structure </li></ul></ul><ul><li>2. Electromagnetic near field formed by long-wavelength energy coupled to many closely spaced structure elements </li></ul><ul><ul><li> all portions of structure volume filled with field </li></ul></ul><ul><ul><li> field requires lower power to maintain than propagating fields </li></ul></ul><ul><li>3. Wavelengths on order of dimensions of typical operating volumes </li></ul><ul><ul><li> volume has characteristics of waveguide operating below f cutoff </li></ul></ul><ul><ul><li>  volume has filter characteristics of waveguide cavity </li></ul></ul>
  18. 18. Important Principles – Non-interfering System <ul><li>MagicBubble is a non-radiating system that operates only within its excited cavity – it cannot interfere with another system in the traditional sense </li></ul><ul><ul><li>Non-propagating, static electromagnetic field </li></ul></ul><ul><ul><li>Most wavelengths >> dimensions of structure openings </li></ul></ul><ul><ul><li>Only sustainable a very short distance from the outside cavity wall </li></ul></ul><ul><ul><ul><li>Power levels needed for Bubble communications result in power levels outside the cavity walls that are lower than FCC requirements </li></ul></ul></ul><ul><li>What it can do is suppress communications of other systems that are using the same frequencies </li></ul><ul><ul><li>Bubble channel S/N >> external competing signals </li></ul></ul><ul><ul><li>Operating structure has some characteristics of waveguide cavity filter </li></ul></ul>
  19. 19. Important Principles (continued)‏ <ul><li>Waveguide-type structures normally have high-pass characteristics </li></ul><ul><ul><li>RF < f cutoff normally cannot propagate through waveguide </li></ul></ul><ul><ul><li>Waves encounter high impedances proportional to the waveguide dimensions </li></ul></ul><ul><li>Waveguide (roughly rectangular) operating below cutoff frequency </li></ul><ul><ul><li>Minimum low f cutoff occurs when the guide max dimension   /2 (TE10 mode possible)‏ </li></ul></ul><ul><ul><li>Next higher mode occurs when either... </li></ul></ul><ul><ul><ul><li>the max guide dimension   (TE20 mode possible) or... </li></ul></ul></ul><ul><ul><ul><li>the minimum guide dimension   /2 (TE01 mode possible). </li></ul></ul></ul><ul><ul><li>Flat-waveguide geometry (< half-height) cavities suppress TE01. </li></ul></ul><ul><li>Structure effectively becomes a quasi-resonant cavity with sharp filter characteristics </li></ul>
  20. 20. Architecture Frequency Plans Modulation and Coding Access Protocols
  21. 21. Development Considerations <ul><li>Requirements </li></ul><ul><ul><ul><li>High isolation between receive / transmit channels </li></ul></ul></ul><ul><ul><ul><li>Low power consumption of mobile clients </li></ul></ul></ul><ul><ul><ul><li>Full duplex operation very desirable </li></ul></ul></ul><ul><li>Cost ceiling </li></ul><ul><ul><ul><li>Minimum number of product configurations are desirable to constrain development costs </li></ul></ul></ul><ul><ul><ul><li>Channel-pair frequencies should be programmable to the maximum extent practical </li></ul></ul></ul><ul><li>Separation of receive frequencies into two bands simplifies architecture development </li></ul><ul><ul><ul><li>Two modulation / access approaches suffice to complete a reference design suitable for all known (so far) applications </li></ul></ul></ul><ul><ul><ul><li>Desirable to allocate device transmit frequencies to high end of band to use higher antenna efficiencies </li></ul></ul></ul>
  22. 22. MagicBubble Architecture Hardware Bubble Hub & external interface connections; Bubble-compliant devices Coverag e Interior of physical structure typically up to ~ 100 kft 2 (~ 10 km 2 )‏ Accessibility Any compliant device inside the Bubble (multiple Bubble volumes must be connected through standard data interfaces) Phone DSL Cable Satellite
  23. 23. Overview - Network Structure External Interfaces Access Point (Hub + Exciter)‏ Bubble Volume Phone DSL Cable Satellite HVAC ducts Electrical wiring Plumbing & sprinkler systems Modulated RF carrier is coupled by Bubble exciter to a convenient element of the building’s structure...
  24. 24. Overview - Network Structure (continued)‏ … each piece of which re-couples energy to other nearby elements, setting up a complex near-field electromagnetic standing wave whose relatively long wavelengths cannot propagate well through the relatively small apertures of the structure. Phone DSL Cable Satellite
  25. 25. Overview - Network Structure (continued)‏ Any device in the volume capable of receiving (demodulating and decoding) the signal coupled into the infrastructure by the exciter can communicate with any system connected to the hub. Phone DSL Cable Satellite
  26. 26. Bubble Formation (continued)‏ <ul><li>The Bubble network fills the entire physical volume, everywhere </li></ul><ul><li> Antennas of devices in the Bubble can couple (receive / transmit) into the field </li></ul><ul><li> Do not need line of sight to communicate with Bubble transceiver devices </li></ul><ul><li> Physical location, distribution and configuration of transceivers do not have to be specially arranged </li></ul><ul><li> Path loss, multipath fading, scattering are not factors </li></ul>
  27. 27. Top-Level Frequency Plan Frequency Plan (not to scale)‏ Non-restricted bands in FCC unlicensed 0.5 to 54–MHz frequency range 0.505 10 1 20 30 40 54 2 5 RF (MHz)  FCC Part 15 Restricted Bands
  28. 28. Application & Characteristics  LOWER HIGHER  No. of Devices Usage / duty cycle BW / data rate Power consumption Cavity leakage Transmit efficiency Frequency and Bandwidth
  29. 29. Application & Characteristics (continued)‏ Longer wavelengths, more near-field characteristics; lower data capacity and access requirements, simpler modulations acceptable / advisable; Shorter wavelengths; more prone to radiation and leakage; higher data capacity and access requirements; higher bandwidth efficiency required No. of Devices Usage / duty cycle BW / data rate Power consumption Cavity leakage 0.5 MHz 54 MHz Transmit efficiency 5 MHz
  30. 30. Application & Characteristics (continued)‏ No. of Devices Usage / duty cycle BW / data rate Power consumption Cavity leakage Transmit efficiency Longer wavelengths, more near-field characteristics; lower data capacity and access requirements, simpler modulations acceptable / advisable ; Shorter wavelengths; more prone to radiation and leakage; higher data capacity and access requirements; higher bandwidth efficiency required Rigid channel allocation Low data rates Hybrid FDMA/TDMA B/QPSK Contention Channels Higher data rates CDMA / CSMA QAM / CCK 0.5 to 5 MHz 5 to 54 MHz
  31. 31. Application & Characteristics (continued)‏ <ul><li>Conclusion for Frequency Planning </li></ul><ul><li>Low-High Frequency Range Sectorization - separate ranges into order-of-magnitude wavelength classes to improve relative performance in each class, limit wideband antenna design requirements and limit number of possible product configurations </li></ul><ul><li>Intra-Range FDD (Frequency Division Duplexing) - separate channels into low-range receive, high-range transmit channel pairs to obtain maximum power efficiency of mobile devices </li></ul><ul><li>Allocate low-range frequencies to low-data rate, low-duty cycle receiving devices </li></ul><ul><li>Allocate high-range frequencies to high-data rate, high-usage receiving devices </li></ul><ul><li>Duplex mode operations require separate receive / transmit frequency pairs (channels)‏ </li></ul><ul><li>High frequency in each channel pair allocated to transmission, lower frequency to reception </li></ul>Low Range Downlink High Range Uplink Low data rates Low duty cycles Higher data rates High usage 0.5 to 5 MHz 5 to 54 MHz
  32. 32. Application & Characteristics (continued)‏ <ul><li>Frequency Planning (continued )‏ </li></ul><ul><li>Allocate low-range frequencies to low-data rate, low-duty cycle receiving devices </li></ul><ul><li>Allocate high-range frequencies to high-data rate, high-usage receiving devices </li></ul><ul><li>Duplex mode operations require separate receive / transmit frequency pairs (channels)‏ </li></ul><ul><li>High frequency in each channel pair allocated to transmission, lower frequency to reception </li></ul>Low data rates Low duty cycles Higher data rates High usage 0.5 to 5 MHz 5 to 54 MHz Receive Frequency
  33. 33. Summary Fewer devices Broadband High duty cycles TRADE SPACE Large numbers Low rates Low duty cycles Broadband Plan Base Plan Applications Frequency Plans Characteristics Long wavelengths Tight structures Short wavelengths Open structures Separate Low / High Sub-ranges 4 Mbps / 24 Mbps Capacity QPSK / OQPSK FDMA / TDMA Separate Low / High Sub-ranges 4 Mbps / 90+ Mbps Capacity 64/256-QAM, CCK DOCSIS MAC
  34. 34. MagicBubble Architecture (continued)‏ Access Protocol Different requirements for different applications; desirable to have few protocols as practical to constrain product development costs data rate  number of devices  duty cycle/usage  Dedicated FDMA and rigidly controlled TDMA Hybrid FDMA/TDMA CDMA; WAP CDMA; CSMA/CD; WAP / SWAP candidate protocols narrowband broadband
  35. 35. Video Embedded or add-on module for TV or set-top box that enables Bubble hub to distribute CATV MPEG video <ul><li>Downstream : </li></ul><ul><li>42 – 850 MHz at access point converted to 5.505 – 27.0 and 32.0 – 54.0 MHz for client* </li></ul><ul><li>Up to six separate channels to six TV sets simultaneously </li></ul><ul><li>DOCSIS or DVB/DAVIC standards </li></ul><ul><li>64-QAM downstream assumed (i.e., 256-QAM explicitly not assumed)‏ </li></ul><ul><li>Upstream capacity to select channels and enable Web-TV applications </li></ul><ul><li>5 MHz RF bandwidth total </li></ul><ul><li>3 Mbps per TV (  rudimentary TDM required to accommodate all TVs used </li></ul><ul><li>simultaneously for interactive Internet use)‏ </li></ul>* U.S. assumed (6 MHz RFBW per channel) - if 8 MHz required for European market, adjust plan to use .5 - 5.5 and 27 - 32 MHz channels to provide additional spectrum needed (…or offer 5 channels per Bubble, etc.…)‏
  36. 36. Video - General Requirements Bubble RF in ADC Symbol Sync EQ Carrier removal Symbol proc bit stream output Processor I/F Nyquist rate processing N x baud rate processing Baud rate processing <ul><li>set dynamic range </li></ul><ul><li>sample input </li></ul><ul><li>select channel </li></ul><ul><li>report status </li></ul><ul><li>Web-TV </li></ul><ul><li>antenna </li></ul><ul><li>direct-sample ADC </li></ul><ul><li>DSP </li></ul><ul><li>digital cable tuner </li></ul>Functions Receive <ul><li>sensors </li></ul><ul><li>processor </li></ul><ul><li>modulator </li></ul><ul><li>oscillator </li></ul><ul><li>antenna </li></ul>Transmit Common <ul><li>package </li></ul><ul><li>power </li></ul><ul><li>user i/f </li></ul>
  37. 37. Primary Requirements <ul><li>RF </li></ul><ul><ul><li>Receive up to six RF channels </li></ul></ul><ul><ul><ul><li>6 MHz RF bandwidth each </li></ul></ul></ul><ul><ul><ul><li>64-QAM </li></ul></ul></ul><ul><ul><ul><li>31.2 Mbps channel raw data rate </li></ul></ul></ul><ul><ul><li>Transmit upstream signal </li></ul></ul><ul><ul><ul><li>2-MHz </li></ul></ul></ul><ul><ul><ul><li>QPSK / 16-QAM (tbd)‏ </li></ul></ul></ul><ul><ul><ul><li>3 Mbps </li></ul></ul></ul><ul><li>Control </li></ul><ul><ul><li>Channel selection </li></ul></ul><ul><ul><li>Upstream comms </li></ul></ul><ul><ul><li>Bi-directional Web-TV </li></ul></ul><ul><ul><li>Diagnostic reporting </li></ul></ul><ul><li>Processing </li></ul><ul><ul><li>ADC/demodulation </li></ul></ul><ul><ul><li>Decoding ( RS (204, 188, 6) )‏ </li></ul></ul><ul><ul><li>MAC protocol </li></ul></ul><ul><ul><ul><li>MPEG frame sync/data extraction </li></ul></ul></ul><ul><ul><ul><li>Upstream timing (burst time slots)‏ </li></ul></ul></ul><ul><ul><ul><li>Upstream unique word </li></ul></ul></ul><ul><ul><li>R-S encoding </li></ul></ul><ul><ul><li>DAC/modulation </li></ul></ul><ul><li>Power </li></ul><ul><ul><li>Less than 1 W average desirable </li></ul></ul><ul><li>Important Assumptions </li></ul><ul><ul><li>Hub performs all conversions & HPF </li></ul></ul><ul><ul><li>Hub sets dynamic range of downstream signals </li></ul></ul>
  38. 38. Functional Block Diagram … host power availability assumed … wideband, direct conversion software radio … single antenna, three chipsets (RF, processor, DSP modem), tbd interfaces … processor/memory could be integrated with DSP modem BPF ADC DEMOD MAC TV I/F (USB)‏ BURST MOD CPU Bubble RF DAC Memory AC/DC Converter BPF 64-QAM / 256-QAM 27 – 56 Mbps I/F DPLXR QPSK / 16-QAM ~ 3 Mbps
  39. 39. Cost Estimate Antenna Package / assembly AC/DC converter ass’y RF/tuner ass’y /chip DSP modem Interface ass’y / chip Low High 10 6 Estimate Range Production Quantity TOTAL per unit ($, wholesale)‏ 0.50 0.75 0.52 0.78 18.00 1.76 2.65 0.58 0.87 16.19 24.29 1.24 0.83 12.00 Qty. Cost Estimate - Mb DOCSIS CATV Embedded 1 10 100 1 10 10 2 Wholesale Cost (dollars)‏ 5 10 3 10 4 10 5 10 6 10 7 50 20 2

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