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As the main goal of network media service transmission, to meet and enhance the quality of experience (QoE) for users, and optimize transmission control mechanism. High-definition (HD) streaming media technology demands larger bandwidth. While QoE evaluation needs to consider multiple paths network transmission quality of service (QoS), path payload distribution, service features and other attributes...
At present, the user experience provided by smart mobile terminals is limited to the battery capacity. This paper focuses on how to improve the energy efficiency of terminals in OFDMA-based wireless multicast systems with frequency-selective channels. We assume that multicast terminals can switch to sleep mode during the transmission of some OFDM symbols according to their OFDMA frame-level quality...
In this paper, we focus on energy-efficient opportunistic multicast scheduling design method and user sleeping mechanism for the scalable video transmission in a wireless network. The goal is to minimize the total energy consumption for the terminal when receiving streaming video with bandwidth constraint and users’ minimum QoS requirements. To utilize opportunistic multicast scheduling, unequal erasure...
In this paper, we focus on designing energy-efficient opportunistic multicast scheduling method and user sleeping mechanism for scalable video transmission in a wireless network. The goal is to minimize the total energy consumption for receiving video data with bandwidth constraint and users' minimum QoS requirements. To utilize opportunistic multicast scheduling, unequal erasure protection (UXP)...
Digital Television/Terrestrial Multimedia Broadcasting (DTMB) is announced as the Chinese Digital Television Terrestrial Broadcasting (DTTB) standard. In the conventional applications, all the transport streams (TS) from various programs are multiplexed in the level of TS packets. Therefore, all the programs should take the same interleaving, constellation mapping and channel coding, and hence the...
Multiple modulation modes and coding rates are often used in wireless communication systems to satisfy different QoS requirements. The starting point of this paper is the observation that the error probabilities of different bits in modulation are different. At the same time, different coding rates can also provide different protection capabilities. Furthermore, in hierarchical modulation, modulation...
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