Multiplexed binary offset carrier (MBOC) modulation[1][2][3] is a modulation design proposed for Galileo[2] and modernized GPS satellite navigation signals, which combines a sine binary offset carrier SinBOC(1,1) signal with a SinBOC(6,1) signal, either via weighted sum/difference (the CBOC implementation) or via time-multiplexing (the TMBOC implementation).

The main objective of the common GPS and Galileo signal design activity was that the power spectral density (PSD) of the proposed solution would be identical for GPS L1C and Galileo E1 OS signals when the pilot and data components are computed together.[1] This assures high interoperability between both signals. Its power spectral density is defined by[4]

MBOC has two main implementations, the Composite Binary Offset Carrier (CBOC) implementation, currently used in Galileo, and the Time-Multiplexed Binary Offset Carrier (TMBOC), currently used in the modernized GPS L1C signal.

See also

edit

References

edit
  1. ^ a b Navipedia information on MBCO Modulation
  2. ^ a b Galileo Open Service Signal In Space Interface Control Document (OS SIS ICD) Archived 2014-06-11 at the Wayback Machine, GSA, Issue 1.1, September 2010
  3. ^ Hoult, N.; Aguado, L.E.; Xia, P. (2008). "MBOC and BOC(1,1) Performance Comparison". Journal of Navigation. 61 (4): 613–627. doi:10.1017/S0373463308004918.
  4. ^ Agreement06

📚 Artikel Terkait di Wikipedia

Binary offset carrier modulation

Binary offset carrier modulation (BOC modulation) was developed by John Betz in order to allow interoperability of satellite navigation systems. It is

Offset binary

Offset binary, also referred to as excess-K, excess-N, excess-e, excess code or biased representation, is a method for signed number representation where

Composite Binary Offset Carrier

The Composite Binary Offset Carrier (CBOC) modulation is a particular implementation of the Multiplexed Binary Offset Carrier modulation and it is nowadays

GPS signals

1) for the data signal and TMBOC for the pilot. The time multiplexed binary offset carrier (TMBOC) is BOC(1,1) for all except 4 of 33 cycles, when it

Phase-shift keying

Wikimedia Commons has media related to Quantized phase modulation. Binary offset carrier modulation Differential coding Modulation – for an overview of all

GIOVE

common signal using a specific optimised waveform, MBOC (multiplexed binary offset carrier), in accordance with the agreement drawn up in July 2007 by

Orthogonal frequency-division multiplexing

frequency-division multiplexing (OFDM) is a type of digital transmission used in digital modulation for encoding digital (binary) data on multiple carrier frequencies

Galileo (satellite navigation system)

of space European Geostationary Navigation Overlay Service Multiplexed binary offset carrier modulation – the modulation type chosen for Galileo Open Service