Boc modulation galileo biography

Not to be confused with offset binary.

Binary offset carrier modulation^[1][2] (BOC modulation) was developed by John Betz in order to allow interoperability of satellite navigation systems.

It is currently used in the US GPS system, Indian IRNSS system and in Galileo^[3] and is a square sub-carrier modulation, where a signal is multiplied by a rectangular sub-carrier of frequency equal to or greater than the chip rate.

Boc modulation galileo biography

Following this sub-carriermultiplication, the spectrum of the signal is divided into two parts, therefore BOC modulation is also known as a split-spectrum modulation. Their major advantages are, that one can shape the spectrum to allow inter-system-compatibility and better theoretically achievable tracking capabilities, due to higher frequencies if downmixed to the complex baseband.

On the other hand, a huge variety of different implementations or instantiations was set up, making it difficult to get