moona.sheikh
Newbie level 3
srrc filter
Hello,
Im implementing a Physical layer for a Mobile comm. Im using 16 QAM Modulation, Than Applying SRRC filter and than applying stdchan with prorogation condition model "cost207TUx6" and "cost207HTx6".
My ber curve is flat. I have tried different filter parameter like changing oversampling rate and Filter order, but there is not much improvement.
Im unable to upload scatter plot after the down sampling on the receiver side My signal after applying rcosflt and stdchan is somewhat like this with 12-14 cross lines crossing at the 0 axis. while without applying stdchan model Im able to recover my signal.
My same design parameters works perfectly with 4 QAM.
Kindly reply and suggest some solution.
As I see there is something wrong with receiver signal. Kindly advice me any possible solutions for 16 QAM.
Hello,
Im implementing a Physical layer for a Mobile comm. Im using 16 QAM Modulation, Than Applying SRRC filter and than applying stdchan with prorogation condition model "cost207TUx6" and "cost207HTx6".
My ber curve is flat. I have tried different filter parameter like changing oversampling rate and Filter order, but there is not much improvement.
Im unable to upload scatter plot after the down sampling on the receiver side My signal after applying rcosflt and stdchan is somewhat like this with 12-14 cross lines crossing at the 0 axis. while without applying stdchan model Im able to recover my signal.
My same design parameters works perfectly with 4 QAM.
Kindly reply and suggest some solution.
As I see there is something wrong with receiver signal. Kindly advice me any possible solutions for 16 QAM.