- Tech know how online

spreading factor (SF)

In spread spectrum technology, the bit sequence to be transmitted is spread with a spreading frequency and a chip sequence is created.

Chips" are the smallest information units within the code sequence. The chip sequence is higher than the bit sequence by the spreading factor (SF). Or, in other words, the spreading factor is the ratio of the chip rate to the bit rate.

The amount of the spreading factor depends on the application. In UMTS, spreading factors are 4, 8, 16, 32, 64, 128, 256, and 512. In other applications, the values are 1,000, and in the GPS system, 20,460.

Informationen zum Artikel
Englisch: spreading factor - SF
Updated at: 30.01.2019
#Words: 138
Translations: DE