Modulation for Wireless Transmission of Encoded Speech and Video Packets

Advisor: Prof. Carl Baum

Current and evolving techniques for the wireless transmission of speech and video result in the need to send multiple classes of data bits. One class of bits is the most important - without recovering these bits successfully, the entire packet is likely to be corrupted. The bits in this class contain control information, such as filtering parameters that affect the recovery process for the remaining bits. Typically, a second class of bits consist of the "important" parts of the speech or video waveform, and a third class of bits are used to enhance signal quality.

Typical wireless system designs rely solely on different types of error-control coding to provide differing reliabilities for the different classes of bits. In this project, the student will conduct research on using different modulation schemes to provide the changes in reliability. In later years of the project, a combination of variable modulation and variable coding will be explored.