Constellation GMSK Channel Equalization

Dear all,

I'm currently implementing channel equalization for GMSKmodulation, following the examples on this link:

http://www.mathworks.de/help/toolbox/comm/ug/a1049735315.html#a1051035832b1

almost all the equalizers demand the constellation diagram of the modulation type, but as we know, the constellation diagram for gmsk is continuous phase changing (limited to pi/2), so it won't be fixed like BPSK. So, anyone has a suggestion on this ?

many thanks,

Haider