IPTV作为三网融合的重要内容,其发展备受关注,提供具有良好的用户体验质量(Quality of Experience,QoE)服务是其与传统电视业务相竞争的关键。所以,对IPTV基于QoE的视频质量评价越来越重要,对IPTV的QoE视频质量评价方法进行了介绍,重点...IPTV作为三网融合的重要内容,其发展备受关注,提供具有良好的用户体验质量(Quality of Experience,QoE)服务是其与传统电视业务相竞争的关键。所以,对IPTV基于QoE的视频质量评价越来越重要,对IPTV的QoE视频质量评价方法进行了介绍,重点讨论了针对编码和网络传输损伤的视频质量客观评价方法。展开更多
Fast growth of mobile internet and internet-of-things has propelled the concept formation and research on 5G wireless communications systems which are to be standardized around 2020(IMT-2020).There will be diverse app...Fast growth of mobile internet and internet-of-things has propelled the concept formation and research on 5G wireless communications systems which are to be standardized around 2020(IMT-2020).There will be diverse application scenarios expected for 5G networks.Hence,key performance indicators(KPIs) of 5G systems would be very diverse,not just the peak data rate and average/edge spectral efficiency requirements as in previous generations.For each typical scenario,multiple technologies may be used independently or jointly to improve the transmission efficiency,to lower the cost,and to increase the number of connections,etc.Key enabling technologies are discussed which include massive MIMO,ultradense deployment specific techniques,nonorthogonal transmission,high frequency communications,etc.展开更多
文摘IPTV作为三网融合的重要内容,其发展备受关注,提供具有良好的用户体验质量(Quality of Experience,QoE)服务是其与传统电视业务相竞争的关键。所以,对IPTV基于QoE的视频质量评价越来越重要,对IPTV的QoE视频质量评价方法进行了介绍,重点讨论了针对编码和网络传输损伤的视频质量客观评价方法。
文摘Fast growth of mobile internet and internet-of-things has propelled the concept formation and research on 5G wireless communications systems which are to be standardized around 2020(IMT-2020).There will be diverse application scenarios expected for 5G networks.Hence,key performance indicators(KPIs) of 5G systems would be very diverse,not just the peak data rate and average/edge spectral efficiency requirements as in previous generations.For each typical scenario,multiple technologies may be used independently or jointly to improve the transmission efficiency,to lower the cost,and to increase the number of connections,etc.Key enabling technologies are discussed which include massive MIMO,ultradense deployment specific techniques,nonorthogonal transmission,high frequency communications,etc.
