Transmission system for digital audio broadcasting

Details Transmission system for digital audio broadcasting Transmission system for digital audio broadcasting

1996-04-04

1998-05-12

Chin, Stephen

Pulse or digital communications

Synchronizers

Frequency or phase control using synchronizing signal

375261, 375298, 375364, 370509, 370515, 370522, 37471, H04L 700

Patent

active

057517746

ABSTRACT:
A digital audio broadcasting (DAB) system includes a radio-frequency (RF) transmitter and a corresponding RF receiver. The RF transmitter formats a DAB signal into a sequence of frames, each frame having a header comprising a predefined grouping of psuedo-random number sequences comprising 100 symbols. Of these 100 symbols, 86 symbols of the header are used for frame synchronization and channel sounding (for characterization of a communications channel), while the remaining 14 symbols are used for interleaver and data synchronization in an interleaved fashion.

REFERENCES:
patent: 5260972 (1993-11-01), Wang
patent: 5406586 (1995-04-01), Wang
World Media Expo News, "AT&T System Broadcasts Live", by Alan Carter, Sep. 7, 1995.
World Media Expo News, "Reaction in on AT&T DAB Demo", by Alan Carter, Sep. 8, 1995.

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