gsm ramp profile

please help!
who has source about cell phone GSM switching or debug experience?
what are related to switching?
thank you!

There was book uploaded "GSM architecture" (not sure about name ) it can help you .

you must use cell phone with modem.When turn on modem function,you can data transmission.

relate to swtich spectrum or other?

If you mean the ORFS due to switching fail.
check your burst ramp up and ramp down curve.
The curve should be smooth, if not, ORFS due to switching may fail.
Try to calibrate your ramps.

can you tell me where to find the book?
thanks!

yeah! has some resource?

had checked ramp!
but no good effcet

check the shape of power versus time,especially the rise and fall part.

the due to switch is PA on/off side efficent
so check you ramp profile
and PA power de-coupe capacitance
maybe too small

are you sure no problem for your pcb design?

yes,when the temperature of the pcb board is higher than ambient ,the performance improved.
so can eliminate pcb factor.

changed ramp table has no effecient.

and which is the de-couple capacitor?

we had adjusted the pll loop filter ,Poutlevel,the maching network of tranciever out ,there are some efficient,but no distinct improved.