How many codes are required to get 7.2Mbps in HSDPA?

5 codes and qpsk= 1.8mbps;
5 codes and 16 qam= 3.6 mbps;
10 codes and 16 qam= 7.2 mbps;
15 codes and 16 qam= 14.4;
15 codes and 64 qam= 21.1mbps;
15 codes and 16 qam(mimo)=28mbps;
16 codes and 64 qam(mimo)=42.2mbps