If size is not that important for the transmitter you can put an external lens in front of the IR diode. An old magnifying glass will do a great job. You can see this if you use a RED visible led or a CMOS camera (mobile phone cameras usually work too).

Depending of the lens you will have to adjust the distance from the led to the lens to get the correct focal plane.

For the receiver you can put the TSOP in the end of a short black pipe so it can not get direkt sunlight. If you do these 2 things you can easily get 100m using a normal IR led and 100 mA in current indoor. If you also add a lense on the receiver you will get even more distance.