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Packet-Level Forward Error Correction (PL-FEC) techniques are widely applied to multimedia communications. To deal with the burst loss problem in packet transmissions over networks, PL-FEC 1-D interleaved parity codes are used in Real-time Transport Protocol (RTP), which uses User Datagram Protocol (UDP) to transport packets. However, the codes' error correction performance, encoding rate, decoding...
This paper illustrates the design of multimedia network courseware for Building Materials from four aspects as Exploiture Aims, Design of Structure, Designing Standards and Main Characteristics of Courseware. According to the characteristics of the course, we established the Designing Standards for the courseware and introduce an innovative section as experiments simulation to settle the lack of practice...
Traditional, software development was normally treated as an engineering process, which can be a lengthy and inflexible process. Recently, as the demand for software is increasing dramatically, new ways of developing software have been sought, among which developing software creatively is attracting attention. Media products are normally creatively developed and naturally learning how these products...
Multiple description coding (MDC) provides stable wireless multimedia communications with the help of multiple transmission paths, while distributed video coding (DVC) effectively shifts the encoder complexity to decoder for mobile media devices. We proposed to combine MDC with DVC, abbreviated as MDVC, to construct a reliable and efficient video codec system. To improve the codec performance, the...
As the fast growth in the development of the related technologies, IEEE 802.11-based wireless mesh networks (WMNs) will be widely deployed as the access networks in community or campus environments. In this kind of WMNs, the playback of multicast streaming video (such as IPTV) could be discontinued due to the handoff process of the mobile stations. In this paper, practical system architecture for...
The rapid development of network has promoted the great innovation of education, and network learning has become one of the hot points in educational technology field. Network learning is a kind of highly autonomous independent learning. Learners should have intense sense of learning responsibility and self-monitoring ability, these are key factors of effecting learning effects. Therefore, cultivating...
Multithreading and multicore processing are powerful ways to take advantage of parallelism in applications in order to boost a system's performance. However, exploring sufficient parallelism and achieving data locality with low communication overhead are still important research issues in embedded multithreading/multicore design. This paper introduces the design of a fast data switching mechanism...
Based on the survey results of Chinese requirements engineering practices, this paper reports a few general patterns of Chinese-culture-related ways of thinking and their influence to requirements elicitation activities. A multimedia enhanced goal oriented requirement elicitation method is proposed, in which media measures are used to help capture user requirements and preferences more easily. The...
As the Web client devices become more and more heterogeneous, the Web content providers should cater for multi-presentation services. Transcoding is seen as an alternative to deliver such services. When deployed offline, transcoding is space-consuming, inflexible, and difficult to maintain. On-demand transcoding, on the other hand, is CPU-consuming and time-delaying. Inspired by new multimedia standards...
In order to improve the error resilient ability and transmission efficiency for image transmission over wireless frequency selective fading channels, a joint source-channel coding (JSCC) scheme was proposed. In which, MIMO-OFDM and adaptive wavelet pretreatment were combined together. MIMO-OFDM was used to deal with frequency-selective, time dispersive characterize of wireless fading channels; adaptive...
In order to improve error resilient ability and transmission efficiency for image transmission over wireless channels, a joint source channel coding (JSCC) scheme was proposed in this paper, in which adaptive image segmentation and irregular low-density parity check (LDPC) was fitted together. At first, an adaptive image segmentation method according to the pixel intensity was designed to segment...
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