Adaptative forward error control scheme
一种分组错误率、传输块的技术,应用在防止差错、基于链路质量的传输修改、传输系统等方向
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[0031] The invention is applicable to any FEC scheme. In the example described below, the FEC code is characterized by two parameters k and n, where k is the number of media packets, and (n-k) is the number of redundant packets generated from k media packets. The parameter n has a constant integer value. The amount of redundancy is adapted by changing the value of parameter k. This is not restrictive.
[0032] figure 1 An example of a transmission system according to the present invention is shown, which includes a transmitter 1, a transmission network 2, and a receiver 3. In this example, the transmission network 2 is composed of an Internet network and a wireless access network (for example, a network compliant with GPRS or UMTS standards). The transmitter 1 includes: a media source 10 for delivering media packets, an FEC encoder 12 for generating redundant packets from media packets received from the media source 10, and the first four layers of the OSI reference model for...
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