An implementation of a fountain code-based MIMO-OFDM receiver for real-time wireless video streaming

Abstract

This paper presents a real-time implementation of both a fountain code decoder and a MIMO-OFDM receiver for a wireless video streaming system. The development of the physical layer conforms to the specifications of the Wireless LAN standard, while the limited MAC functionality is based on custom specifications. In order to realize a real-time wireless video streaming system that has a low latency, fountain code, which does not require re-transmission, is adopted. However, since the conventional decoding algorithm for fountain code cannot maintain the high-throughput requirements of real-time streaming, hardware design is implemented based on the Sherman-Morrison algorithm for fountain code decoders, thereby overcoming the problem. The results verify that the proposed fountain code decoder is able to outperform the conventional decoder. Consequently, the validity of the proposed real-time video streaming system is demonstrated.