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- Constellation_diagram abstract "A constellation diagram is a representation of a signal modulated by a digital modulation scheme such as quadrature amplitude modulation or phase-shift keying. It displays the signal as a two-dimensional X-Y plane scatter diagram in the complex plane at symbol sampling instants. In a more abstract sense, it represents the possible symbols that may be selected by a given modulation scheme as points in the complex plane. Measured constellation diagrams can be used to recognize the type of interference and distortion in a signal.By representing a transmitted symbol as a complex number and modulating a cosine and sine carrier signal with the real and imaginary parts (respectively), the symbol can be sent with two carriers on the same frequency. They are often referred to as quadrature carriers. A coherent detector is able to independently demodulate these carriers. This principle of using two independently modulated carriers is the foundation of quadrature modulation. In pure phase modulation, the phase of the modulating symbol is the phase of the carrier itself and this is the best representation of the modulated signal.As the symbols are represented as complex numbers, they can be visualized as points on the complex plane. The real and imaginary axes are often called the in phase, or I-axis, and the quadrature, or Q-axis, respectively. Plotting several symbols in a scatter diagram produces the constellation diagram. The points on a constellation diagram are called constellation points. They are a set of modulation symbols which compose the modulation alphabet. Also a diagram of the ideal positions, signal space diagram, in a modulation scheme can be called a constellation diagram. In this sense the constellation is not a scatter diagram but a representation of the scheme itself. The example shown here is for 8-PSK, which has also been given a Gray coded bit assignment.".
- Constellation_diagram thumbnail 8PSK_Gray_Coded.svg?width=300.
- Constellation_diagram wikiPageID "2033635".
- Constellation_diagram wikiPageLength "4140".
- Constellation_diagram wikiPageOutDegree "40".
- Constellation_diagram wikiPageRevisionID "696193191".
- Constellation_diagram wikiPageWikiLink Additive_white_Gaussian_noise.
- Constellation_diagram wikiPageWikiLink Carrier_recovery.
- Constellation_diagram wikiPageWikiLink Category:Diagrams.
- Constellation_diagram wikiPageWikiLink Category:Quantized_radio_modulation_modes.
- Constellation_diagram wikiPageWikiLink Complex_plane.
- Constellation_diagram wikiPageWikiLink Coordinate_system.
- Constellation_diagram wikiPageWikiLink Demodulation.
- Constellation_diagram wikiPageWikiLink Distortion.
- Constellation_diagram wikiPageWikiLink Error_vector_magnitude.
- Constellation_diagram wikiPageWikiLink Euclidean_distance.
- Constellation_diagram wikiPageWikiLink Eye_pattern.
- Constellation_diagram wikiPageWikiLink Gaussian_noise.
- Constellation_diagram wikiPageWikiLink Gray_code.
- Constellation_diagram wikiPageWikiLink Imaginary_number.
- Constellation_diagram wikiPageWikiLink In-phase_and_quadrature_components.
- Constellation_diagram wikiPageWikiLink Interference_(communication).
- Constellation_diagram wikiPageWikiLink Jitter.
- Constellation_diagram wikiPageWikiLink Maximum_likelihood.
- Constellation_diagram wikiPageWikiLink Modulation.
- Constellation_diagram wikiPageWikiLink Modulation_error_ratio.
- Constellation_diagram wikiPageWikiLink Phase-shift_keying.
- Constellation_diagram wikiPageWikiLink Phase_noise.
- Constellation_diagram wikiPageWikiLink Quadrature_amplitude_modulation.
- Constellation_diagram wikiPageWikiLink Quadrature_modulation.
- Constellation_diagram wikiPageWikiLink Real_number.
- Constellation_diagram wikiPageWikiLink Scatter_plot.
- Constellation_diagram wikiPageWikiLink Signal_space_diagram.
- Constellation_diagram wikiPageWikiLink Sine.
- Constellation_diagram wikiPageWikiLink Symbol_rate.
- Constellation_diagram wikiPageWikiLink Trigonometric_functions.
- Constellation_diagram wikiPageWikiLink X-Y_plane.
- Constellation_diagram wikiPageWikiLink File:16QAM_Gray_Coded.svg.
- Constellation_diagram wikiPageWikiLink File:8PSK_Gray_Coded.svg.
- Constellation_diagram wikiPageWikiLinkText "Constellation diagram".
- Constellation_diagram wikiPageWikiLinkText "constellation alphabet".
- Constellation_diagram wikiPageWikiLinkText "constellation diagram".
- Constellation_diagram wikiPageWikiLinkText "constellation points".
- Constellation_diagram wikiPageWikiLinkText "constellation symbol".
- Constellation_diagram wikiPageWikiLinkText "constellation".
- Constellation_diagram wikiPageWikiLinkText "interpretation of this diagram".
- Constellation_diagram wikiPageUsesTemplate Template:Unreferenced.
- Constellation_diagram subject Category:Diagrams.
- Constellation_diagram subject Category:Quantized_radio_modulation_modes.
- Constellation_diagram hypernym Representation.
- Constellation_diagram type Infographic.
- Constellation_diagram type Mode.
- Constellation_diagram comment "A constellation diagram is a representation of a signal modulated by a digital modulation scheme such as quadrature amplitude modulation or phase-shift keying. It displays the signal as a two-dimensional X-Y plane scatter diagram in the complex plane at symbol sampling instants. In a more abstract sense, it represents the possible symbols that may be selected by a given modulation scheme as points in the complex plane.".
- Constellation_diagram label "Constellation diagram".
- Constellation_diagram sameAs Q1782940.
- Constellation_diagram sameAs Konstelační_diagram.
- Constellation_diagram sameAs Konstellationsdiagramm.
- Constellation_diagram sameAs Diagrama_de_constelación.
- Constellation_diagram sameAs Diagramme_de_constellation.
- Constellation_diagram sameAs 信号空間ダイヤグラム.
- Constellation_diagram sameAs Констелациски_дијаграм.
- Constellation_diagram sameAs Diagram_konstelacji.
- Constellation_diagram sameAs m.06glb5.
- Constellation_diagram sameAs Сигнальное_созвездие.
- Constellation_diagram sameAs xd0x94xd1x96xd0xb0xd0xb3xd1x80xd0xb0xd0xbcxd0xb0_xd1x81xd0xb8xd0xb3xd0xbdxd0xb0xd0xbbxd1x8cxd0xbdxd0xbexd0xb3xd0xbe_xd1x81xd1x83xd0xb7xd1x96xd1x80xd1x8f.
- Constellation_diagram sameAs Q1782940.
- Constellation_diagram sameAs 星座图_(数字通信).
- Constellation_diagram wasDerivedFrom Constellation_diagram?oldid=696193191.
- Constellation_diagram depiction 8PSK_Gray_Coded.svg.
- Constellation_diagram isPrimaryTopicOf Constellation_diagram.