Method and system for the OFDM multicarrier transmission of digital broadcasting signals

US6522700B1 · kind B1 · utility

Assignee

• DEUTSCHE TELEKOM AG · DE

Inventors

• Gerd Zimmermann · Eckental, DE
• Henrik Schulze · Meschede, DE

Key dates

• Filing date: Feb 8, 1999
• Grant date: Feb 18, 2003
• Expiry date: Feb 8, 2019

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04H2201/20
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

An improved DAB transmission system with which a higher net data rate can be achieved while maintaining the same system quality, or the same system quality can be achieved with a much lower signal-to-noise ratio on the receiver side at the same net data rate. A symbol mapper is connected directly downstream from a convolution encoder instead of to the block generator; as in the case of prior DAB systems. A multi-stage channel encoder, to which the data substreams of a source data stream are distributed, is used. The source data stream is processed on the complex symbol level and not on the bit level, as in the case of prior DAB systems.