The Design and Implementation of a Wireless Real-Time Video Transmission System over WLAN

Wireless real-time video transmission system is widely adopted in many fields. In this paper, an embedded Linux system platform is built. The platform is based upon i.mx27 with inner ASIC video codec. We transplant embedded Linux kernel and transmission protocol stack to support application interfaces. In order to ensure the real-time property, we use hardware video encoder, optimize MPEG-4 codec configuration, and adopt effective transmission control protocol. Also a WLAN protocol, 802.11g with relatively larger bandwidth is applied. Finally, we examine the end-to-end performance of this system. The results show that this system can support real-time video transmission service well.