Multiplexed binary offset carrier: Difference between revisions

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{{Short description|Radio modulation design}}

'''Multiplexed Binary Offset Carrier''' (MBOC) modulation <ref>SIS-ICD08</ref><ref>NaviJournal08</ref> is a modulation proposed for Galileo <ref>SIS-ICD08</ref> and modernized GPS 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). Its [[Power spectral density]] <math>\Phi(f)</math> is defined via <ref>Agreement06</ref>

'''Multiplexed binary offset carrier''' ('''MBOC''') modulation<ref name="NAVIPEDIA_MBOC">[https://gssc.esa.int/navipedia/index.php/MBOC_Modulation Navipedia information on MBCO Modulation]</ref><ref name="GAL_ICD">[http://ec.europa.eu/enterprise/policies/satnav/galileo/files/galileo-os-sis-icd-issue1-revision1_en.pdf Galileo Open Service Signal In Space Interface Control Document (OS SIS ICD)] {{webarchive|url=https://web.archive.org/web/20140611093741/http://ec.europa.eu/enterprise/policies/satnav/galileo/files/galileo-os-sis-icd-issue1-revision1_en.pdf |date=2014-06-11 }}, GSA, Issue 1.1, September 2010</ref><ref>{{cite journal |last=Hoult |first=N. |last2=Aguado |first2=L.E. |last3=Xia |first3=P. |title=MBOC and BOC(1,1) Performance Comparison |journal=Journal of Navigation |volume=61 |issue=4 |pages=613–627 |date=2008 |doi=10.1017/S0373463308004918 }}</ref> is a modulation design proposed for [[Galileo (satellite navigation)|Galileo]]<ref name="GAL_ICD"/> and modernized [[Global Positioning System|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).

<math>\Phi(f)=\frac{10}{11}BOC(1,1)+\frac{1}{11}BOC(6,1)</math>

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.<ref name="NAVIPEDIA_MBOC"/> This assures high interoperability between both signals. Its power spectral density <math>\Phi(f)</math> is defined by<ref>[https://www.losangeles.spaceforce.mil/ Agreement06] </ref>

: <math>\Phi(f) = \frac{10}{11}BOC(1,1)+\frac{1}{11}BOC(6,1)</math>

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

== See also ==

*[[Binary offset carrier modulation]]

== References ==

{{reflist}}

{{refbegin}}

*Galileo Open Service Signal In Space Interface Control Document http://www.gsa.europa.eu/go/galileo/os-sis-icd/galileo-open-service-signal-in-space-interface-control-document (SIS-ICD08)

*Hoult, N.; Aguado, L. E. and Xia, P. MBOC and BOC(1,1) Performance Comparison. Journal of Navigation, Volume 61, No. 4, pp613–627, 2008 (NaviJournal08)

*http://www.losangeles.af.mil/shared/media/document/AFD-070803-061.pdf (Agreement06)

{{refend}}

--[[User:PikkuHiirri98|PikkuHiirri98]] ([[User talk:PikkuHiirri98|talk]]) 09:54, 29 April 2009 (UTC)

[[Category:Quantized radio modulation modes]]

[[de:Binary Offset Carrier#Multiplexed Binary Offset Carrier]]