英语翻译A Simple Intensity Modulation Encoding is rejected because it does not provide synchronization; a string of 1s or 0s would have no transitions The 4B/5B code is chosen over Manchester code because it is more efficient (80% vs.50%) The 4B/

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英语翻译A Simple Intensity Modulation Encoding is rejected because it does not provide synchronization; a string of 1s or 0s would have no transitions The 4B/5B code is chosen over Manchester code because it is more efficient (80% vs.50%) The 4B/
英语翻译
A Simple Intensity Modulation Encoding is rejected because it does not provide synchronization; a string of 1s or 0s would have no transitions
The 4B/5B code is chosen over Manchester code because it is more efficient (80% vs.50%)
The 4B/5B code is further encoded using NRZI so that the resulting differential encoding will improve reception reliability
NRZI (NonReturn To Zero Inverted)
1:A transition at the beginning of the bit interval
0:No transition at the beginning of the bit interval
The specific codes chosen for the encoding of the 16 four-bit data patterns guarantee no more than three zeros in a row.This provides for adequate synchronization

英语翻译A Simple Intensity Modulation Encoding is rejected because it does not provide synchronization; a string of 1s or 0s would have no transitions The 4B/5B code is chosen over Manchester code because it is more efficient (80% vs.50%) The 4B/
一个简单的强度调制编码是拒绝,因为它并没有提供同步;一连串的1s的或0不会有过渡该4b/5b代码是选择超过曼彻斯特码,因为它是更有效率（ 80 ％比50 ％ ） 4B条/第5 B代码是进一步编码使用nrzi ,使所产生的差分编码将改善接收的可靠性nrzi （ nonreturn零倒置）
1 ：1的过渡在开始的位间隔0 ：没有过渡,在开始的位间隔的具体守则选择的编码16 4位数据模式,保证不超过三个零,在一排.这提供了足够的同步

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