Generic selectors
Exact matches only
Search in title
Search in content
Search in posts
Search in pages

Reply To: UMTS-GSM Guardband

#69127
pix
Guest

hi jason,

My initial post was actually asking in which frequency band you werre working. I assume you’re talking about GSM900 and UMTS900 co-existance ?

In this case, 3GPP said that a guard band of 300 kHz is enough. One GSM chanel = 200kHz, so you’re fine if you keep 2 arfcn (400kHz) separation between the start/end of UMTS 5MHz bw and the first used GSM channel.

If you want to read : 3GPP TR 25.816

Maybe I’m wrong, but I think the operator for which I’m working for at the moment is only using 200kHz guard band. This has to be confirmed.

Cheers,
Pix