quadrature in English

noun

1

the process of constructing a square with an area equal to that of a circle, or of another figure bounded by a curve.

Craig published several more papers on the logarithmic curve, the curve of quickest descent and quadrature of figures.

2

the position of the moon or a planet when it is 90° from the sun as viewed from the earth.

When the Sun-Moon system is in quadrature relative to the Earth, the combined gravitational forces are not as strong.

3

a phase difference of 90° between two waves of the same frequency, as in the color difference signals of a television screen.

The MT312 is a single-chip variable rate digital quadrature phase shift keying satellite demodulator.

Use "quadrature" in a sentence

1. Quadrature-Amplitude-Modulation

2. Gaussian Quadrature Weights and Abscissae

3. Enhanced quadrature notch filter

4. Quadrature-Amplitude-Modulation (QAM) techniques above level 256;

5. Quadrature-Amplitude-Modulation (QAM) techniques above level 1 024;

6. quadrature-amplitude-modulation (QAM) techniques above level 256; or

7. a. Quadrature-Amplitude-Modulation (QAM) techniques above level 1 024 ;

8. a. Quadrature-amplitude-modulation (QAM) techniques above level 256; or

9. Phase error detector for a quadrature amplitude modulated (qam) receiver

10. Radio equipment employing Quadrature-Amplitude-Modulation (QAM) techniques above level 256.

11. a. quadrature-amplitude-modulation (QAM) techniques above level 256;

12. radio equipment employing quadrature-amplitude-modulation (QAM) techniques above level 256.

13. Radio equipment employing quadrature-amplitude-modulation (QAM) techniques above level 128.

14. Radio equipment employing Quadrature-Amplitude-Modulation (QAM) techniques above level 1 024.

15. Radio equipment employing quadrature-amplitude-modulation (QAM) techniques above level 256; or

16. The signal to be demodulated is subjected to quadrature modulation.

17. a. Quadrature-amplitude-modulation (QAM) techniques above level 128; or

18. Radio equipment employing quadrature-amplitude-modulation (QAM) techniques above level 128; or

19. A transceiver controller may perform a self-calibration to address quadrature imbalance.

20. Other articles where Cubature is discussed: quadrature: …volume, the process is called Cubature

21. 4. radio equipment employing quadrature-amplitude-modulation (QAM) techniques above level 256; or

22. Radio equipment employing quadrature-amplitude-modulation (QAM) techniques above level 256.

23. A method and Apparatus for equalizing a received quadrature amplitude modulated signal is disclosed.

24. Radio equipment employing Quadrature-Amplitude-Modulation (QAM) techniques above level 1 024;

25. This paper shows the estimation of errors which arise when quadrature rules are applied to analytic functions.

26. Sychronous detector provides a representation of the IF signal, including phase and amplitude without loss of information. The baseband in-phase (I) and quadrature-phase (Q) signals are digitized using a pair of A/D converters The synchronous detector is also referred to as a quadrature channel receiver, quadrature detector, I/Q demodulator, or coherent detector.

27. Calculation procedures are described and examples of numerical tables for nodes and quadrature coefficients presented.

28. For spaces of analytic functionsf(z) withLp-norms, 1≤p≤∞, the norm of quadrature error functionals is evaluated.

29. A numerical construction of extended Gaussian quadrature rules for weight functions with algebraic and logarithmic singularities is presented.

30. 3. Equipment employing "optical switching"; or 4. Radio equipment employing Quadrature-Amplitude-Modulation (QAM) techniques above level 256.

31. An extension of the Clenshaw-Curtis quadrature method is described for integrals involving absolutely integrable weight functions.

32. Optical receiver for receiving a signal m-valued star-shaped quadrature amplitude modulation with differential phase coding and application of same

33. Weights and Abscissas are presented for the Gaussian quadrature rules of order n=16, 20, 24, 32, 40, 48

34. The color subcarrier, as noted above, is 3.579545 MHz above the video carrier, and is quadrature-amplitude-modulated with a suppressed carrier.

35. By combining the Gauss quadrature with the calculation technique of matrix exponential function in the precise time-integration method, a new precise time-...

36. Each bit-stream is mapped into a sequence of Quadrature Amplitude Modulation (QAM) symbols, which are grouped into non-overlapping sets of QAM symbols.

37. We derive an upper bound on the error probability of lattice codes combined with Quadrature Amplitude Modulation (qam) over the additive white Gaussian noise channel.

38. The word is parallel to quadrature, which means resolving an area into a number of squares.while Cubature, means resolving a volume into a number of cubes

39. 10 Then, the influence of amplitude and phase unbalance of quadrature double channels in radar on MTI performance is analyzed. Finally, a better resolution method is proposed.

40. Average of the absolute value of the amplitude information of the in-phase components and of the quadrature phase components are determined over the number of symbols.

41. The word is parallel to quadrature, which means resolving an area into a number of Cubature, means resolving a volume into a number of cubes

42. 49 and 155-165) use the word “quadrature” to mean numerical computation of a univariate integral, and “Cubature” to mean numerical computation of a multiple integral.

43. Simulation results show that the BER and PER performance can be improved obviously when in-phase channel and quadrature-phase channel of each sub-carrier are inserted in the pilot symbols.

44. 12 In fact, Heisenberg′s uncertainty principle is a special case of entropy uncertainty relation, and entropy can be used to measure the quantum fluctuation of the quadrature components of the field.

45. Supports on-chip peripherals like serial ports, CAN, PWM, Quadrature Encoder Pulse (QEP), Event Capture, Serial Peripheral Interface Bus (SPI), I2C, Analog-to-digital converter (ADC), Digital-to-analog converter (DAC), and GPIO.

46. 'Spectral efficiency` (5) is a figure of merit parametrised to characterise the efficiency of transmission system which uses complex modulation schemes such as QAM (quadrature amplitude modulation), Trellis coding, QPSK (Q-phased shift key), etc.

47. The present invention relates to a wireless access system, more particularly, to methods for transceiving channel state information (CSI) for supporting 256 quadrature amplitude modulation (QAM) scheme and apparatuses for supporting the methods.

48. The entire upper sideband is transmitted, but only 750 kHz of the lower sideband, known as a vestigial sideband , is transmitted. The colour subcarrier, as indicated above, is 3.579545 MHz above the video carrier, and is quadrature-amplitude-modulated .

49. The present invention improves the measurement accuracy of an angular velocity in an angular velocity sensor by making it possible to remove quadrature errors without reducing the number of samples at the time of AD conversion.

50. The Quadrature of the Parabola In this work of 24 propositions addressed to Dositheus, Archimedes proves by two methods that the area enclosed by a parabola and a straight line is 4/3 multiplied by the area of a triangle with equal base and height.