Method for data transmission in a digital audio broadcasting sys

Details Method for data transmission in a digital audio broadcasting sys Method for data transmission in a digital audio broadcasting sys

1998-03-27

2000-11-14

Patel, Ajit

Multiplex communications

Communication techniques for information carried in plural...

Combining or distributing information via frequency channels

370203, 370208, 370210, G08G 1500, H04J 100

Patent

active

06148007&

ABSTRACT:
A method of broadcasting digitally encoded information includes the transmission of a plurality of orthogonal frequency division multiplexed sub-carriers. The sub-carriers are modulated by a digitally encoded signal representative of data to be transmitted, with the digitally encoded signal including a plurality of symbols having varying phase and amplitude components. The amplitude modulation can vary between two or more levels. Portions of the digitally encoded signal may be differentially imposed across the sub-carriers. The method also includes receiving the sub-carriers, demodulating the sub-carriers to recover the digitally encoded signal, and decoding the digitally encoded signal.

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