Fig 1 - uploaded by Xiangliang Zhang
Content may be subject to copyright.
SCM System Architecture 

SCM System Architecture 

Source publication
Conference Paper
Full-text available
In this paper, we study the problem of video quality prediction over the wireless 4G network. Video transmission data is collected from a real 4G SCM testbed for investigating factors that affect video quality. After feature transformation and selection on video and network parameters, video quality is predicted by solving as regression problem. Ex...

Context in source publication

Context 1
... emulators are implemented by National Instruments NI PXIe- 1062Q chassis with embedded controller PXIe-8130, IF transceiver PXIe-5641R, RF Up converter PXIe-5610 and RF Down converter PXIe-5600. Figure 1 shows the system architecture of SCM with transmitter on the top. The video data passes through all layers and become superposition coded signal broadcast over the emulated wireless channel. ...

Citations

... In the future, several ideas can be implemented into this algorithm for extension. First, video quality prediction over 4G network is introduced in [23]. Video encoding and network configuration parameters are evaluated by data mining methods to investigate the correlation between these parameters and the video quality in 4G networks. ...
Article
Full-text available
Traditional live television (TV) broadcasting systems are proven to be spectrum inefficient. Therefore, researchers propose to provide TV services on fourth-generation (4G) long-term evolution (LTE) networks. However, static broadcast, a typical broadcasting method over cellular network, is inefficient in terms of radio resource usage. To solve this problem, the audience-driven live TV scheduling (ADTVS) framework is proposed, to maximize radio resource usage when providing TV broadcasting services over LTE networks. ADTVS, a system-level scheduling framework, considers both available radio resources and audience preferences, in order to dynamically schedule TV channels for broadcasting at various time and locations. By conducting a simulation using real-life data and scenarios, it is shown that ADTVS significantly outperforms the static broadcast method. Numerical results indicate that, on average, ADTVS enables substantial improvement to broadcast efficiency and conserves considerable amount of radio resources, while forgoing less than 5% of user services compared to the benchmark system.
... In SCM, the base station (BS) superimposes two video streams, both good and fair quality streams of a video, in one radio signal to broadcast [7], [8]. Although this reduces the radio resource consumption for broadcasting multiple copies of the same video stream and ensure reliable receptions for users in various channel qualities, it does not reduce bandwidth for broadcasting multiple TV channels [9]. ...
... In SCM, the base station (BS) superimposes two video streams, both good and fair quality streams of a video, in one radio signal to broadcast [7], [8]. Although this reduces the radio resource consumption for broadcasting multiple copies of the same video stream and ensure reliable receptions for users in various channel qualities, it does not reduce bandwidth for broadcasting multiple TV channels [9]. ...