MBOC: The New Optimized Spreading Modulation Recommended for GALILEO L1 OS and GPS L1C

Hein, Günter W.; Avila-Rodriguez, Jose-Angel; Wallner, Stefan; Pratt, Anthony R.; Owen, J.I.R.; Issler, Jean-Luc; Betz, John W.; Hegarty, Christopher; Lenahan, S.; Rushanan, Joseph J.; Kraay, A.L.; Stansell, Thomas A.

doi:10.1109/plans.2006.1650688

Cited by 148 publications

(107 citation statements)

References 2 publications

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“…The MBOC(α, β, p) modulation is the optimized version of BOC modulation proposed for Galileo L1-OS signal and the modernized GPS L1C signal [3]. The designation MBOC (α, β, p) indicates that the Power Spectral Density (PSD) is a combination of BOCsin(α, β) and BOCsin(β, β) subcarriers with different power distributions p and (1 -p), respectively, such as [3]:…”

Section: Gnss Modulationsmentioning

confidence: 99%

“…The designation MBOC (α, β, p) indicates that the Power Spectral Density (PSD) is a combination of BOCsin(α, β) and BOCsin(β, β) subcarriers with different power distributions p and (1 -p), respectively, such as [3]:…”

Section: Gnss Modulationsmentioning

confidence: 99%

“…There are two possible implementations of the MBOC modulation, the CBOC for Galileo L1-OS with split power (50% / 50%) between the data component and the pilot component and the TMBOC GPS L1C signal with 75% power on the pilot component and 25% power on the data component [3], [4]:…”

Section: Gnss Modulationsmentioning

confidence: 99%

“…The subcarrier signal s(t) in the CBOC implementation is the weighted sum of BOCsin(1,1) and BOCsin(6,1) subcarriers spreading symbols given by [3], [4]:…”

Section: Gnss Modulationsmentioning

confidence: 99%

“…Namely, we can cite the Multiplexed BOC (MBOC) modulation developed for L1C modernized Global Positioning System (GPS) and Galileo Open Service (OS) signals [3]. It has two implementations: the first one is a four-level signal called Composite BOC (CBOC) [4] and the second one is a bi-level signal called Time-Multiplexed BOC (TMBOC) [3]. One more modulation called Binary Coded Symbol (BCS), which is a generalization of BPSK and BOC modulations, has been presented in [5].…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

GNSS Signals Acquisition and Tracking in Unfavorable Environment

Chebir¹,

Aidel²,

Rouabah³

et al. 2018

RADIOENGINEERING

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Section: Gnss Modulationsmentioning

confidence: 99%

Section: Gnss Modulationsmentioning

confidence: 99%

Section: Gnss Modulationsmentioning

confidence: 99%

“…The subcarrier signal s(t) in the CBOC implementation is the weighted sum of BOCsin(1,1) and BOCsin(6,1) subcarriers spreading symbols given by [3], [4]:…”

Section: Gnss Modulationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

GNSS Signals Acquisition and Tracking in Unfavorable Environment

Chebir¹,

Aidel²,

Rouabah³

et al. 2018

RADIOENGINEERING

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The MBOC Modulation: The Final Touch to the Galileo Frequency and Signal Plan

et al. 2008

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The road to the signals Galileo has today as a baseline has been tedious and long, but has followed a logic from the start. From the very beginning, one of the main challenges that Galileo set for itself was to offer three wide band signals, satisfying the requirements of mass market and pushing the potential performance to its natural limits. The historical Agreement of 2004 between the US and the EC impacted the initially planned signals but has intensified the cooperation between Galileo and GPS. The final touch to the Galileo signal plan was achieved in 2006 when the Working Group on GPS and Galileo Compatibility and Interoperability finally agreed upon the great interest in a new modulation for the E1/L1 frequency, namely the Multiplex Binary Offset Carrier. Galileo has thus accomplished the original objective of providing three wide band signals for the civilian GNSS community.

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Looking for an Optimum S-Curve Shaping of the Different MBOC Implementations

et al. 2008

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The objective of this paper is to find an optimum correlator configuration that is capable of achieving the best possible multipath mitigation performance for an MBOC modulated signal. A new code multipath mitigation technique will be presented. The followed approach is the optimization of the shape of the code discriminator function, on account of the definition of an optimum S‐curve. A fundamental aspect of the S‐curve optimization will be to search for the right compromise between bandwidth of the pre‐correlation filter and the required resolution of the correlators. The method to calculate the weights of the correlators to obtain an optimum S‐curve will be equally shown. The implementation of the optimum discriminator is illustrated and the results of several simulations are presented. Additionally, the obtained performance will be assessed by means of multipath envelopes. To conclude, a comparison of multipath performance figures using a statistical channel model is given.

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MBOC: The New Optimized Spreading Modulation Recommended for GALILEO L1 OS and GPS L1C

Cited by 148 publications

References 2 publications

GNSS Signals Acquisition and Tracking in Unfavorable Environment

GNSS Signals Acquisition and Tracking in Unfavorable Environment

The MBOC Modulation: The Final Touch to the Galileo Frequency and Signal Plan

Looking for an Optimum S-Curve Shaping of the Different MBOC Implementations

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