Transmitting data via RF module in project consisting of transmitter and receiver

hi..
currently i m working on a project consist of transmitter and receiver. basically the transmitter and receiver i did using microcontroller(usart/RS232). So the problem is through simulation i connected both pic using a wire. So now i want to transmit the digital data wireless. So what should i do or can i using the RF module as for transmission? If using RF module, it is the data transmit digitally ?

You can use RF, bluetooth, Zigbee anything they are all serial communication devices or you can use suitable converters for that. but basically they are serial UART interface devices