Range repeater for a transmission system

Details Range repeater for a transmission system Range repeater for a transmission system

1996-12-30

1998-11-10

Vo, Nguyen

Telecommunications

Carrier wave repeater or relay system

Transmitter/receiver feedback compensation

455 63, 455 674, 455296, 4552781, H04B 714

Patent

active

058358480

ABSTRACT:
The invention is a repeater for a telecommunications transmission system such as a CDMA wireless system. The repeater reduces leakage by using a feedback signal whose amplitude and phase are adjusted in response to the amplitude and phase of a sampled input signal when a switch turns off the normal output of the repeater for a short period of time. In one embodiment, a pilot signal is transmitted during this time period so that the sampled input is the leakage signal. In another embodiment, the sampled input is the normal transmission signal received during the time period.

REFERENCES:
patent: 4383331 (1983-05-01), Davidson
patent: 4475243 (1984-10-01), Batlivala et al.
patent: 4952193 (1990-08-01), Talwar

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