通信系统模型
通信系统模型
通信系统模型2
编码分类
编码分类
信息论研究编码的方法
系统码和非系统码
In coding theory, a systematic code is any error-correcting code in which the input data is embedded in the encoded output. Conversely, in a non-systematic code the output does not contain the input symbols.
For a systematic linear code, the generator matrix,
, can always be written as
, where
is the identity matrix of size
针对系统码来说，原始符号包含在输出的编码符号中。
系统码
码率
码率
在线性分组码中，这里的码率指的是编码效率，假设源符号有k个，编码为n个符号，则码率为
k/n。
References:
https://en.wikipedia.org/wiki/Systematic_code
https://www.qualcomm.com/documents/using-raptor-codes-solve-packet-loss-iptv-networks
https://wenku.baidu.com/view/ebe850dadd88d0d233d46a54.html?from=search
https://wenku.baidu.com/view/f157701652d380eb62946d44.html
