Well, perhaps a larger device could have used then because the final ASIC capacity probably exceeds the Spartan limits. At least here we use Stratix III, Virtex 4 for such prototyping.
Does the Spartan device have enough fixed multipliers to make the needed signal processing?
This sounds intersting anyway. Perhaps I should participate:)
It's also amazing how unrealistic you are. The situation in your country doen't have to
be the situation elsewhere. www.saunalahti.fi offers here (including the modem):
DataPaketti 384 max. 384 kbit/s 9,80/month
DataPaketti 512 max. 512 kbit/s 14,80/month
DataPaketti 1M max. 1 Mbit/s 19,80/month
DataPaketti 2M max. 2 Mbit/s 29,80/month
Beats public wifi, because you don't need to find one. Besides WCDMA/HSDPA is not
the last step in this arena: IHSPA enhances it and eventually LTE stuff will
probably lower the monthly fee into completely new level.
I can see their point. Here in Finland the operators are advertising
UMTS/HSDPA unlimited data for less than 10euros per month including
USB modem. That has turned out to be pretty succesful here, no need to
bother for the hotspots - just connect with 3G and it works everywhere.
Most of the Mentor Graphics SW runs on Linux (EDA/PCB stuff). Certainly I haven't heard of a Windows version even exist. In general heavy duty electronic design automation SW is Unix only. They tried Windows versions few years ago but they were a joke.
Even the basic 3G _has_ forward error correction - even two types of it. I believe all modern radio systems use it.
BTW, TCP retransmissions are poison to radio networks. That's why HARQ is used in HSDPA and upcoming standards to prevent TCP retransmissions i.e. if the packet didn't arrive correctly, the PHY layer handles the retransmission (not even the complete TCP packet but just the invalid part to make it simple).
I think bad network coverage is not a reason to rant a radio system. Complain to the network operator . Please understad that it takes time and money to build the network. It may even be that the network gear manufacturers are not able to deliver the needed equipment.
Check out 3GLTE for good Interweb experience, it is coming out in couple of years (www.3gpp.org).
Are you really sure you want to replace your cell phone with WiFi Skype handset?
I doupt that the service level is not even near equal in these two options
(Unless the cell phone coverage in your are really s**ks).
The cell size of a WiFi hotspot is _much_ smaller than e.g. a GSM cell at
largest. It is just (economically) impossible to build a good WiFi coverage
for masses.
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Well, perhaps a larger device could have used then because the final ASIC capacity probably exceeds the Spartan limits. At least here we use Stratix III, Virtex 4 for such prototyping. Does the Spartan device have enough fixed multipliers to make the needed signal processing? This sounds intersting anyway. Perhaps I should participate :)
Lotus Notes
It's also amazing how unrealistic you are. The situation in your country doen't have to be the situation elsewhere. www.saunalahti.fi offers here (including the modem): DataPaketti 384 max. 384 kbit/s 9,80 /month
DataPaketti 512 max. 512 kbit/s 14,80 /month
DataPaketti 1M max. 1 Mbit/s 19,80 /month
DataPaketti 2M max. 2 Mbit/s 29,80 /month
Beats public wifi, because you don't need to find one. Besides WCDMA/HSDPA is not
the last step in this arena: IHSPA enhances it and eventually LTE stuff will
probably lower the monthly fee into completely new level.
I can see their point. Here in Finland the operators are advertising UMTS/HSDPA unlimited data for less than 10euros per month including USB modem. That has turned out to be pretty succesful here, no need to bother for the hotspots - just connect with 3G and it works everywhere.
Most of the Mentor Graphics SW runs on Linux (EDA/PCB stuff). Certainly I haven't heard of a Windows version even exist. In general heavy duty electronic design automation SW is Unix only. They tried Windows versions few years ago but they were a joke.
BTW, TCP retransmissions are poison to radio networks. That's why HARQ is used in HSDPA and upcoming standards to prevent TCP retransmissions i.e. if the packet didn't arrive correctly, the PHY layer handles the retransmission (not even the complete TCP packet but just the invalid part to make it simple).
I think bad network coverage is not a reason to rant a radio system. Complain to the network operator . Please understad that it takes time and money to build the network. It may even be that the network gear manufacturers are not able to deliver the needed equipment.
Check out 3GLTE for good Interweb experience, it is coming out in couple of years (www.3gpp.org).
Are you really sure you want to replace your cell phone with WiFi Skype handset? I doupt that the service level is not even near equal in these two options (Unless the cell phone coverage in your are really s**ks). The cell size of a WiFi hotspot is _much_ smaller than e.g. a GSM cell at largest. It is just (economically) impossible to build a good WiFi coverage for masses.
to eat their own stuff :-)