1. 1

2. 2 Introduction Home networking Choose your path HPNA More details on specification Technical issues Modulation methods Questions Limitations Multiple users Voice and data together

3. 3 Introduction Home networking Choose your path HPNA

4. 4 Media sharing Gaming TV sharing Internet sharing IPTV

5. 5

6. 6

7. 7 TV on demandHD availabilityDiversity of channelsPacket based – digital encodingRent or buy videos on your couch

8. 8 HPNA 1.0 HPNA 2.0 HPNA 3.0 HPNA 3.1 twisted pair coaxial cables

9. 9

10. 10

11. 11

12. More details on specification Technical issues Modulation methods 12

13. 13 Technical Issues Frequency and Bandwidth

14. 14 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)

15. 15 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

16. 16 Transmitter Block Diagram QAM Modulator

17. 17 Questions Limitations Multiple users Voice and data together

18. 18 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.

19. 19 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 m 2 ). -capacity -noise enhanced physical layer transmission for robust operation

20. 20 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

21. 21 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.

22. 22 Data Framing

23. 23 How can we share multiple users in a communication system? 64 users Simultaneous Data Transfer Between more than 2 Devices: not possible

24. 24 How can we send data through these systems in addition to voice? VoIP : Transmitting voice via Data Frames

25. Thanks for your attention Kousha Kalantari Shahriar Aghaei Farshid Bateni Babak Jamali 25