Thavisha Assalaarachchi, Theepan Karunananthan, Ragavan Kathiravetpillai
supervised by Dr. Xavier Fernando, Professor and Multimedia Stream Coordinator
The objective of the project is to design, develop and experiment a cognitive transceiver unit that will transmit at different frequency bands depending on the environment; Tunable Software Defined Radio Transceiver using FPGA. A software defined radio is a device where the carrier wave generation and most of the functions involved in message transmission and reception like modulation/demodulation is carries out digitally in FPGA board. In this project, a transmitter and receiver will be designed to perform the following requirements: The transmission frequency will vary approximately between 750kHz to 2MHz The user can select which frequency the transmitter operates in within the above range The user can input the message to be transmitted using buttons on the FPGA board. FPGA will generate a carrier wave that will satisfy the selected frequency and modulate and then transmit the message Receiver will detect the frequency of transmission and decode the transmitted message. The message will be displayed on the LCD screen of the receiver's FPGA. Other goals are cost reduction and circuit simplicity.
Once fully developed and implemented in hardware and software, the system will transmit and receive signals at a high frequency without interruption and noises from other signals. The use of RF devices such as cellular phones and WLAN devices in accordance with FCC and CSA standards will become ease in all electromagnetically clean environments such as hospitals, aircrafts and other facilities where the RF devices are currently prohibited.
Project targeted applications: Hospitals Air Crafts, Military Applications, Testing Laboratories or Research Facilities, Broadband services, Multimedia networking