On Wednesday 28 July 2004 19:29, T Ullas wrote:
I do not know what is meaning of omnidirectional broadcast. Actually the server and client will be both be communicating and that is bidirectional, correct me if i am wrong.
Pleeease first get your terminology correct. What server client are u talking about??? you want to implement a physical medium for providing connectivity full stop. That is the same as sticking a wire between two points - no server no client. On top of this wire you want to put some protocol to prevent simultaneous transmissions (collision) signal strength, error handling etc this is achieved by using software which implements the 802.11 standards. The 'wire' and the software together constitute an access point.
You also need to read some basic radio and antenna stuff before even thinking of messing around with broadband on a medium which was never meant to operate outside your four walls. But just to increase the snr of this mail omnidirectional means all points of the compass and refers to physical area. Bidirectional means two way and the 'direction' in bidirection is misleading. The correct terminology for what u are trying to say is full duplex. No, wi fi connections are not full duplex. They are half duplex. That's because the transmit and recieve antennas and the transmit and recieve frequencies are in such close proximity that the reciever will be totally saturated with it's own transmission.
No i am not going to be a ISP. Project need to be a community project just like HAM radios, but in 2.5 Gz range
There is no provision for HAM ISPs. Well most of are isps are real ham handed anyways.
No moon bounce will be very slow. It take off the fun of multimedia Internet.
Jeez that was supposed to be humour. Any ways moon bounce is not slow, particularly when compared to our internet access. Multimedia on wifi?? do please read a lot before sticking your neck on this one. An mpeg4 video requires a peak BW of 7Mbps and latency of 2 to 3 mS. Not to mention very error free medium. At best u could broadcast a single video in a room. So perish the thought of multimedia "experience". U could try OFDM which would give you 45Mbps. But the cost would be so prohibitive that u are better off distributing dvds.