Question

有关差错编码问题，请各位大神帮忙。

A
(15,11) code is defined by the following parity check equations:

c1 = u1 + u4 + u5 +
u7 + u9 + u10 + u11

c2 = u1 + u2 + u4 +
u6 + u7 + u8 + u9

c3 = u2 + u3 + u5 +
u7 + u8 + u9 + u10

c4 = u3 + u4 + u6 +
u8 + u9 + u10 + u11

The receiving system detects an incoming message,
r, as “111010110011010”, where the message format is: c1 c2 c3 c4
u1 u2 u3 u4 u5 u6
u7 u8 u9 u10 u11

1. Is the message a valid codeword? Your answer must show
how you’ve arrived at the conclusion.

2. If not, what is the correct codeword?

3. Draw the Syndrome Mapping circuit of a Decoder
receiving the (15,11) code described here.

Answer 1

如果你会PS的话，直接用它修改就行了。Foxit PDF Editor 也可以对PDF进行编辑
还不错，希望你采纳。