In the waveform (a) given below, a bit stream is encoded by Manchester…
2007
In the waveform (a) given below, a bit stream is encoded by Manchester encoding scheme. The same bit stream is encoded in a different coding scheme in wave form (b). The bit stream and the coding scheme are
- A.
1000010111 and Differential Manchester respectively
- B.
0111101000 and Differential Manchester respectively
- C.
1000010111 and Integral Manchester respectively
- D.
0111101000 and Integral Manchester respectively
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Correct answer: A
Answer: A — 1000010111 and Differential Manchester.
Reason (brief):
In (a) each bit shows a mid-bit transition: high→low =
1, low→high =0. Reading pairs of half-intervals gives1000010111.In (b) every bit also has a mid-bit transition (characteristic of Manchester variants). Checking start-of-bit transitions shows the differential rule (transition at bit start ⇒
0, no transition ⇒1), which reproduces the same bitstream. Hence (b) is Differential Manchester.
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