#### Example 4.2 |

### Bandwidth efficiency of encoded data

#### The spectrum of a Manchester encoded signal clearly demonstrates the effectiveness of the coding process in eliminating the dc content of the signal, but also shows an approximate doubling of the bandwidth compared with the NRZ data stream as would be expected from the increased rate of change of waveform. The bandwidth efficiency of Manchester encoded binary data thus drops from 2 bits/second/Hz for the NRZ signal to only 1 bit/second/Hz. |

#### Bandwidth efficiency of Manchester encoded binary data = 1 bit/second/Hz