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What is

HPNA?

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Introducti

on

• Home networking• Choose your path• HPNA

More details

on specificatio

n

• Technical issues• Modulation methods

Questions

• Limitations• Multiple users• Voice and data together

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Introduction

• Home networking• Choose your path• HPNA

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Media sharing Gaming TV

sharing

Internet sharing IPTV

Home networking

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TV on demand

HD availability

Diversity of channels

Packet based – digital encoding

Rent or buy videos on your couch

IPTV

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HomePNA: Home Phone line Networking

Alliance

HPNA 1.0

HPNA 2.0

HPNA 3.0

HPNA 3.1

twisted pair

coaxial cables

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Developers and Promoters

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Follow me!!!

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More details on specification

• Technical issues• Modulation methods

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Technical IssuesFrequency and Bandwidth

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Modulation Methods

HPNA 1.0 pulse position modulation (PPM)

Variable bits per symbol 2-10

HPNA 2.0 , 3.0 , 3,1 quadrature amplitude modulation (QAM)

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Concept of FD-QAM

Good for channels with low SNR

FDQAM does not require the transmitter to have knowledge of the channel characteristics

Modulation details

Carrier Frequency 7Mhz

Base symbol rate is 2 Mbps

Speed

Over phone-line 4Mbps to 160Mbps

Over Coax 4Mbps to 320Mbps

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Transmitter Block Diagram

QAM Modulator

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Questions

• Limitations• Multiple users• Voice and data together

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Limitation and Drawbacks

•1 )You need a phone jack close to each computer. Otherwise, you will have to run phone extension cords or install new

wiring.

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Limitation and Drawbacks

2 )There is a physical limit of 1,000 feet (304.8 m) of wiring between devices, and the overall area of coverage should not exceed 10,000 square feet (929 m2).

-capacity

-noiseenhanced physical layer transmission for robust operation

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Limitation and Drawbacks

4 )Once installed, HomePNA systems sometimes increase noise levels or cause distortion on the voice side of the telephone lines. This problem can often be.

3) Because the coaxial line is a shielded line, the HomePNA system can increase its power (called “power boost”), allowing the effective distance the HomePNA system can operate to higher level

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Limitation and Drawbacks

 5 )HomePNA choses a frequency that is high enough that it does not

interfere with the frequencies used by Digital Subscriber Loop (DSL) Internet service. It is possible for standard telephone service (POTS), DSL, and HomePNA to coexist on the same wiring without interference.

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Data Framing

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How can we share multiple users in a communication system?

64 users

Simultaneous Data Transfer Between more than 2 Devices: not possible

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How can we send data through these systems in additionto voice?

VoIP : Transmitting voice via Data Frames

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Thanks for your attention• Kousha Kalantari• Shahriar Aghaei• Farshid Bateni• Babak Jamali

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