A mixed satellite TV channel transmission scheme to enhance frequency bandwidth utilization
A mixed satellite TV channel transmission scheme to enhance frequency bandwidth utilization
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提高频率带宽利用率的混合卫星电视频道传输方案
DOI:
10.1002/dac.3266
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发表时间:
2017-08
影响因子:
2.1
通讯作者:
张亚生
中科院分区:
文献类型:
--
作者:
赖俊宇;赵杰;张伟;何辞;张亚生
In the recent past, television (TV) industry has started to provide users with ultra high definition (ultra- HD) and / or three-dimensional (3D) TV programs, which on the one hand, can bring users greatly enhanced viewing experience, while on the other hand, considerably increases the transmission bandwidth requirements and may lead to bandwidth shortage situations in many different types of TV systems. In particular, this bandwidth shortage poses a serious challenge in the current satellite TV broadcasting systems due to the strictly limited bandwidth available in C and Ku frequency bands. Aiming at mitigating the bandwidth shortage problem, this paper proposes an innovative mixed channel transmission scheme for the next generation satellite TV systems. The proposed scheme integrates the merits of using both broadcast & multicast methods, both Ku & Ka frequency bands, as well as both wide-shaped & spot antenna beam types. According to the conducted comprehensive simulation experiments, this mixed scheme is able to effectively enhance the frequency bandwidth utilization with still providing users affordable quality of experience (QoE). Moreover, to cope with the impact brought by ever increasing number of provided TV channels, this paper enhances the proposed scheme by using multicast method to transmit those least popular global channels, which can efficiently reduce the QoE degradation up to 90% in Ku- and Ka-band frequency resource restricted scenarios.
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DOI:
--
发表时间:
2011-06
期刊:
2011 International Symposium on Performance Evaluation of Computer & Telecommunication Systems
影响因子:
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作者:
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2012-05
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PIK - Praxis der Informationsverarbeitung und Kommunikation
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发表时间:
2008-10
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DOI:
10.1109/iwssc.2008.4656772
发表时间:
2008-10
期刊:
2008 IEEE International Workshop on Satellite and Space Communications
影响因子:
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作者:
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