GSM900 and CDMA2000a Co-located Antennas.

Hi fellows,

I am working on coverage optimization of a running CDMA2000a Celluler
system commisioned with Lucent BTS Equiptments. I am getting problems
regarding ECHO in the Handsets. My CDMA Antennas are co-located with
GSM900 antennas.

I am using KATHEREIN(65 degree) and DECIBAL PRODUCTS (90 degree) make
antennas.
Is there any quick solution for solving this problem?
Any websites or links would be greatly appreciated.

Can I get some info or tip regarding minimum distance to be maintained
between CDMA Antennas with GSM Antennas.

Regards,
Tarun Tiwari.

Tarun,

Why do you suspect the problem is due to the GSM antennas?  Echo is usually
a problem in the baseband signal processing or connection to POTS, not the
RF.


"Tarun Tiwari" <tarunmani@yahoo.com> wrote in message
news:fb73eea0.0309242317.786b6f50@posting.google.com...
> Hi fellows,
>
> I am working on coverage optimization of a running CDMA2000a Celluler
> system commisioned with Lucent BTS Equiptments. I am getting problems
> regarding ECHO in the Handsets. My CDMA Antennas are co-located with
> GSM900 antennas.
>
> I am using KATHEREIN(65 degree) and DECIBAL PRODUCTS (90 degree) make
> antennas.
> Is there any quick solution for solving this problem?
> Any websites or links would be greatly appreciated.
>
> Can I get some info or tip regarding minimum distance to be maintained
> between CDMA Antennas with GSM Antennas.
>
> Regards,
> Tarun Tiwari.