Communication satellite system having an increased power output

Details Communication satellite system having an increased power output Communication satellite system having an increased power output

1991-03-26

1993-05-04

Swann, Tod R.

Pulse or digital communications

Repeaters

Testing

380 34, 455 121, H04K 100

Patent

active

052088294

ABSTRACT:
A satellite communication system for providing maximum power output in a spread spectrum signal transmission is disclosed. Spectral shaping is provided at a satellite transmitter to shape a spread spectrum so that over a bandwidth of interest, the spectrum has a maximally flat characteristic. By maximizing the spectrum amplitude flatness, the required power density for a bandwidth limitation imposed to prevent interference with other communication facilities is maintained. In each earth station receiving the transmission from the satellite, a filtering is provided of the demodulated baseband satellite signal such that the spectrum is restored to its original shape. The filters on the receive side may be analog, having the same amplitude function as the transmit spectrum shaping filter, but having an inverse phase response. This insures a matched filter condition at transmitter and receiver, maximizing signal transfer. A programmable demodulator is provided to select a demodulation mode. The programmable demodulator may receive microcode from a microprocessor configuring the PLA into a despreader, demodulator for spread spectrum applications or as a straight BPSK demodulator where the data signal has not been subject to spectrum spreading.

REFERENCES:
patent: 4455651 (1984-06-01), Baran
patent: 4860317 (1989-08-01), Tomlinson
patent: 4879726 (1989-11-01), Kobayashi et al.
patent: 4901307 (1990-02-01), Gilhousen et al.
patent: 4972430 (1990-11-01), Cantwell

Affiliated with

Also associated with

Rating

Communication satellite system having an increased power output does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Communication satellite system having an increased power output , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Communication satellite system having an increased power output will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1980287