Manoz,

There's no great conspiracy to keep this 'secret' information from you! Most of us would not have done this before - so I for one, are not withholding anything from you.

The reference given by Dan in 'a short backgrounder' probably will tell you all you need to know. This first thing it mentions is why not to use a UART! Another line of investigation is the Holtek HT12 devices normally coupled with the modules you mention. Read the data on how they encode the data - it is a pulse width modulated signal. If you use the same method you can check your code using the HT12 devices as a reference.

Unfortunately all this takes a little thinking. For the purposes of your education, you're the bunny that has to do the thinking. So don't "groan" and post half baked code they even we have trouble understanding. The ball have been given to you - run with it!