Delay compensation

Details Delay compensation Delay compensation

1997-02-06

1998-08-25

Pham, Chi H.

Multiplex communications

Generalized orthogonal or special mathematical techniques

Fourier transform

370207, 370320, 370342, 455 676, H04J 1302

Patent

active

057990000

ABSTRACT:
In a discrete tone system, a base station receives a transmission burst from a remote unit being installed that includes delay compensation pilot tones that are uniformly spread throughout the transmission bandwidth. The arrival time transmission burst is not synchronized with the other remote units transmitting to the base station. The base station measures the phase delay of each tone and calculates the delay of the remote unit from the slope of the line of phase angle versus tone frequency. The base station transmits a signal to the remote unit that includes the magnitude and direction of the delay, which allows the remote unit to adapt the timing of its transmission to be synchronized with the other remote units.

REFERENCES:
patent: 5654955 (1997-08-01), Natali

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