Abstract: Radio transmissions need to be intelligent and reconfigurable to control quality of service (QoS). QoS can be controlled using both adaptive modulations in conjunction with hybrid type of error control mechanism at the data link layer. In this study adaptive modulation is used as a powerful technique to improve the tradeoff between spectral efficiency and Bit Error Rate (BER). The adaptation also takes into account the requirements of different traffic services such as required BER and packet loss. The receiver estimates the received Signal to Noise ratio (SNR) and sends the feedback information via a feedback channel to the transmitter, which determines the suitable modulation constellation to be used over the channel. The proposed adaptive communication system uses a combination of Forward Error Correction (FEC) and Automatic Repeat Request (ARQ) in order to get efficient and reliable real time data communication over wireless channel.