Receiver

US8503582B2 · kind B2 · utility

Assignee

• TECHNISCHE UNIVERSITÄT BERLIN · DE

Inventors

• Andreas Ibing · Berlin, DE
• Holger Boche · Berlin, DE

Key dates

• Filing date: Sep 27, 2010
• Grant date: Aug 6, 2013
• Expiry date: Aug 24, 2031

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04L25/0202
• WIPO field: Digital communication
• WIPO sector: Electrical engineering

Abstract

A receiver is provided to receive a secondary bitstream which is transmitted by a secondary signal together with a primary signal. The receiver includes a down-converter configured to convert an input signal containing the primary and secondary signals, to a baseband complex symbol stream, A first processing unit processes the baseband complex symbol stream and provides a primary bitstream transmitted by the primary signal or a decoded primary log-likelihood ratio stream. A symbol reconstructing unit is configured to process the primary bitstream or the decoded primary log-likelihood ratio stream and to provide a reconstructed primary symbol stream. A subtraction unit is configured to provide a difference symbol stream by substracting the baseband complex symbol stream and the reconstructed primary symbol stream from each other. A second processing unit is provided to process the difference symbol stream and to provide the secondary bitstream transmitted by the secondary signal.