Can you see chaos?---Chaos CDMA Demonstration.

Demonstration of Chaos CDMA Communications Systems at ChaosWare's Lab in 2005. While the narration is given in Japanese, you can see a real-time chaotic modulated baseband signals generated at the Chaos-CDMA reciever. Note that the frequency band is 2.4 GHz and this experiment was financially supported by NICT and JST.

Category:

People & Blogs

Tags:

• Chaos
• CDMA
• FPGA
• 2.4GHz
• Wlan
• chaosware
• NICT
• JST
• RIKEN
• 4G

[danschaoticmind]

I just cannot see any corporate or even technical advantages in this nor anything that hasn't already been implemented in other forms with more success But, I'll say this was an interesting to say the least demonstration of a possibility.

[WirelessAT]

I think by definition 2:1 is the absolute min requirement for a CDMA system. Without introducing any interference to the channel, I am not sure this demo is very meaningful. Because the advantage of spreading is not shown. Immunity/susceptibility of AWGN also is not proven.. Again, I could be wrong..

BTW, is this company still existing ? If so, could we have the "direct" contact info ?

Thanks in advance.

[chaosatchaos]

Yes, its is just one link. (We already 2 to 1

multiple access communications demo as shown in the posters.) This is based on the chaos code spectrum spreading (implemented in FPGA).

[WirelessAT]

Correct me if I am wrong.

I don't think you have built the RF front-end

right ? Because I think I see a pair wireless G modem.

Are you just showing the implemention of FPGA ? Do you employ encryption. If so, does it has provable security ? And what is the strength ? Could you show us your BER vs. Eb/No curve ? What is your data rate ? It is real time right ?

Thanks

[WirelessAT]

Wow. A working demo ?

Would you sync them better ? I couldn't tell.

I think it is just one link right ? Was there any aggressor ? Is it susceptible to microwave oven ? How do you cope with digital

spread & ACI?