How to improve DL User Throughput in LTE

Can anyone suggest to improve DL User thoughput at parameter level in Ericsson system FDD+TDD Layer with 10Mhz BW

hi i am not expert but my opinion is just for discussion , i think sinr is very important to increase dl throughput
-easiest way is check rsrp if its more than good enough at cell edge, you can decrease the downtilt so rsrp would decrease and sinr increase ,or you can give some power from referense to service
the above methods are dangerous because they could make problems for edge users if you were not careful
-you can optimize pci mode 3 for the cells
-you can use icic
-you can improve the mimo feature
-add another carrier
i am not expert but my opinion is only for discussion
this book is good for reference (LTE Optimization Engineering Handbook)

Thanks for your valuable suggestion