The quality of experience（ QoE） evaluation model for voice over IP（ VoI P） service is studied to analyze the impact of network parameters on voice quality and monitor voice quality in real-time for operators.First...The quality of experience（ QoE） evaluation model for voice over IP（ VoI P） service is studied to analyze the impact of network parameters on voice quality and monitor voice quality in real-time for operators.Firstly,the influence of some network parameters on the voice quality of VoI P is investigated. Then,a simulation platform for VoI P transmission is built to collect voice data under different network enviornments. According to the simulation results,a new mapping model between these arguments and VoI P voice quality is deduced. Finally,the accuracy of this voice quality evaluation model is examined and the results demanstrate that it has high reliability and feasibility.展开更多
An analytical model is proposed for input buffer router architecture Network-on-Chip （NoC） with finite size buffers. The model is developed based on M/G/ 1/K queuing theory and takes into consideration the restricti...An analytical model is proposed for input buffer router architecture Network-on-Chip （NoC） with finite size buffers. The model is developed based on M/G/ 1/K queuing theory and takes into consideration the restriction of buffer sizes in NoC. It analyzes the packet＇s sojourn time in each buffer and calculates the packets average latency in NoC The validity of the model is verified through simulation. By comparing our analytical outcomes to the simulation results, we show that the proposed model successfully captures the performance characteristics of NoC, which provides an efficient performance analysis tool for NoC design.展开更多
基金Supported by China National S&T Major Project(2012ZX03001034MCM 201240113)
文摘The quality of experience（ QoE） evaluation model for voice over IP（ VoI P） service is studied to analyze the impact of network parameters on voice quality and monitor voice quality in real-time for operators.Firstly,the influence of some network parameters on the voice quality of VoI P is investigated. Then,a simulation platform for VoI P transmission is built to collect voice data under different network enviornments. According to the simulation results,a new mapping model between these arguments and VoI P voice quality is deduced. Finally,the accuracy of this voice quality evaluation model is examined and the results demanstrate that it has high reliability and feasibility.
文摘An analytical model is proposed for input buffer router architecture Network-on-Chip （NoC） with finite size buffers. The model is developed based on M/G/ 1/K queuing theory and takes into consideration the restriction of buffer sizes in NoC. It analyzes the packet＇s sojourn time in each buffer and calculates the packets average latency in NoC The validity of the model is verified through simulation. By comparing our analytical outcomes to the simulation results, we show that the proposed model successfully captures the performance characteristics of NoC, which provides an efficient performance analysis tool for NoC design.
