Method and device for determining the phase intercept in a syste

Details Method and device for determining the phase intercept in a syste Method and device for determining the phase intercept in a syste

1978-10-11

1980-10-28

Smith, Jerry

Boots, shoes, and leggings

324 57DE, 364487, 375 57, 375 83, H04B 346, G06F 1531

Patent

active

042310946

ABSTRACT:
A method and device for measuring the slope of the envelope delay characteristic of a transmission channel and deriving the phase intercept value therefrom. A measurment signal having a frequency spectrum including three rays at frequencies f.sub.o, f.sub.1 and f.sub.2 is sent over the transmission channel. Frequency f.sub.o is the carrier frequency and frequencies f.sub.1 and f.sub.2 are defined as f.sub.1 =f.sub.o -1/2T and f.sub.2 =f.sub.o +1/2T, where 1/T is the signaling rate. At the output of the channel, the three components at frequencies f.sub.o, f.sub.1 and f.sub.2 are extracted from the received measurement signal, and the instantaneous phases .psi..sub.o, .psi..sub.1 and .psi..sub.2 of these three components are then measured. The value of the slope S of the envelope delay characteristic is obtained in accordance with the relation ##EQU1## where .phi..sub.o.sup.', .phi..sub.1' and .phi..sub.2' are the phases of the three rays at frequencies f.sub.o, f.sub.1 and f.sub.2 of the measurement signal sent over the channel. The value of the phase intercept .phi..sub.i for a given sampling phase .phi..sub.s is determined in accordance with the relation

REFERENCES:
patent: 3629696 (1971-12-01), Bartelink
patent: 3706931 (1972-12-01), Subramanian
patent: 3842247 (1974-10-01), Anderson
patent: 4039769 (1977-08-01), Bradley

Affiliated with

Also associated with

Rating

Method and device for determining the phase intercept in a syste does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and device for determining the phase intercept in a syste, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and device for determining the phase intercept in a syste will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-271806