Supporting Uncompressed HD Video Streaming without Retransmissions over 60GHz Wireless Networks

Uncompressed HD (high-definition) video delivery over wireless personal area networks (WPANs) is a challenging problem because of the limited bandwidth and variations in channel. The most straight forward technique to recover from channel errors is to retransmit corrupted packets. However, retransmissions introduce significant delay/jitter and require additional bandwidth. Therefore, retransmissions may be unsuitable for uncompressed video streaming. In this paper, we develop, simulate, and evaluate an millimeter- wave (mmWave) system for supporting uncompressed video streams up to 3-Gbps without any retransmissions. New features of the mmWave system incorporates: (i) UEP (unequal error protection) where different video bits (MSBs and LSBs) are protected differently, (ii) a multiple-CRC to determine whether MSB or/and LSB portions are in error, (iii) RS code swapping (RSS), an error concealment scheme which can conceal some errors in video pixels. Simulations using real uncompressed HD images indicate that the proposed mmWave system can maintain good average PSNR (peak-signal-to-noise-ratio) under poor channel conditions, achieving what is generally accepted as a good picture quality with PSNR values greater than 40 dB. Moreover, the proposed system results in less fluctuating PSNR values

Solution approach for efficient spectrum management in Home Networking scenarios

Català: En aquest projecte es realitza un estudi qualitatiu del grau de congestió i utilització de l'espectre radioelèctric en escenaris de Home Networking, a la vegada que es proposa una solució a aquesta problemàtica.Castellano: En este proyecto se realiza un estudio cualitativo del grado de congestión y utilización del espectro radioeléctrico en escenarios de Home Netowrking a la vez que se propone una solución a esta problemáticaEnglish: This Project is researching the congestion and the utilization of the frequency spectrum in Home Networking scenarios. The final aim of this project is to provide an efficient solution to this problem

Solution approach for efficient spectrum management in Home Networking scenarios

Català: En aquest projecte es realitza un estudi qualitatiu del grau de congestió i utilització de l'espectre radioelèctric en escenaris de Home Networking, a la vegada que es proposa una solució a aquesta problemàtica.Castellano: En este proyecto se realiza un estudio cualitativo del grado de congestión y utilización del espectro radioeléctrico en escenarios de Home Netowrking a la vez que se propone una solución a esta problemáticaEnglish: This Project is researching the congestion and the utilization of the frequency spectrum in Home Networking scenarios. The final aim of this project is to provide an efficient solution to this problem