Monitoring of input backoff in time division multiple access com

Details Monitoring of input backoff in time division multiple access com Monitoring of input backoff in time division multiple access com

1984-05-21

1987-01-13

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370119, 370 17, 455 67, 455 69, H04J 306, H04J 1500, H04J 116, H04J 314

Patent

active

046370170

ABSTRACT:
A method of measuring input-backoff to an amplifier in a time-division multiple access (TDMA) communication system having a carrier recovery segment and a clock recovery segment prior to a data segment in a traffic burst. A monitoring station transmits a CW pilot signal within the amplifier's bandwidth. In the guard time between bursts, the monitoring station measures the unsuppressed pilot level output by the amplifier. While a ground station is transmitting an unmodulated carrier during carrier recovery or a carrier modulated at the clock frequency during clock recovery, the monitoring station measures the suppressed pilot level, suppressed by the non-linear interaction of pilot and carrier. The amount of pilot suppression is related to the input power back-off of the carrier by a previously measured or a theoretically derived relationship. The carrier-to-suppressed noise ratio is determined by measuring the carrier level during the carrier recovery and by measuring the suppressed noise during carrier or clock recovery through a noise filter centered away from any transmitted signals or their intermodulation products.

REFERENCES:
patent: 3283249 (1966-11-01), Mitchell
patent: 3315164 (1967-04-01), Ferguson, Jr. et al.
patent: 3411088 (1968-11-01), Hutchison
patent: 3456191 (1969-07-01), Rodenburg et al.
patent: 3487169 (1969-12-01), Miyagi
patent: 4228538 (1980-10-01), Scharla-Nielsen et al.
patent: 4408322 (1983-10-01), Chadwick et al.

Affiliated with

Also associated with

Rating

Monitoring of input backoff in time division multiple access com does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Monitoring of input backoff in time division multiple access com, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Monitoring of input backoff in time division multiple access com will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2361193