Yoshihiro Ohtani

Error correction block based ARQ protocol for wireless digital video transmission

This paper proposes a new error correction block based hybrid ARQ protocol, in which physical layer packets are formed with the use of multiple error correction blocks, and the retransmission control is performed on the basis of these error correction blocks. This protocol is designed dedicatedly for mobile AV stations to provide high quality digital video transmission through a radio channel. To analyze the performance of this protocol, numbers of asymptotic and simulation values of the frame loss rate versus the uncorrectable error probability are calculated, in comparison with the performance of the ordinary packet based retransmission control.

Implementation of wireless MPEG2 transmission system using IEEE 802.11b PHY

A new error correction block based hybrid ARQ protocol, in which PHY layer packets are composed of multiple error correction blocks, is devised together with a retransmission control scheme constructed on the basis of these error correction blocks. A wireless video transmission system using IEEE802.11b PHY is also described, which has been developed with the use of a medium access control (MAC) LSI to perform the proposed protocol.

QoS technologies on AV/CE-oriented wireless home network

This document explains several QoS (quality of service) requirements for AV/CE applications, and technologies to satisfy some of these requirements in a wireless network environment. Further items for establishing a wireless home network are also discussed.