EP1536574A3

Method to increase performance of secondary data in a hierachical modulation scheme

Abstract

The present invention provides a receiver (216, 217, 340) for use in a SDAR system (210), the receiver including a receiving unit including a satellite signal detection means (342, 343) for detecting a first transmit signal transmitted from a first communication satellite (212, 214) and a second transmit signal transmitted from a second communication satellite (212, 214), the first transmit signal produced when the transmitter modulates a primary data stream (302) with a secondary data stream (304) on a first carrier wave associated with the first communication satellite and the second transmit signal produced when the transmitter modulates the primary and secondary data streams on a second carrier wave associated with the second communication satellite; and at least one demodulator (344) coupled to the receiving unit and configured to demodulate the first transmit signal.

EP1536574A3, drawing sheet 1
Sheet 1 of 1

Term

Term ended

Projected expiry passed 23 November 2024, 1.8 years ago.

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