Integrated error and packet loss control in wireless multimedia links.

摘要

This thesis studies the possibility of joint error and packet loss control when packet loss is not necessarily the result of packets being in error. The problems associated with packet loss and packet errors over wireless channels are systematically investigated, and an integrated approach to solving these problems is presented.; In particular, this thesis proposes a novel two-dimensional Forward Error Correction (FEC) technique, VHPG FEC, which combats packet losses and packet errors simultaneously. The adaptive extension of this scheme is introduced to deal with dynamic wireless channel characteristics. This thesis also proposes a novel adaptive data link control architecture, Diff-DLC, which differentiates traffic and utilizes AVHPG FEC (with or without hybrid ARQ) to provide solutions to reducing packet loss and packet errors within time constraints in wireless multimedia networking environments. A group of closed form formulas for VHPG FEC error performance, throughput and delay analyses are provided to illustrate the performance of schemes proposed. In addition, this thesis compares traditional FEC and ARQ schemes with the novel link control in the areas of throughput and delay. (Abstract shortened by UMI.)