PAR and out-of-band radiation reduction in code multiplex modulation systems

US7126980B1 · kind B1 · utility

Assignee

• Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V. · DE

Inventor

• Marco Breiling · Berlin, DE

Key dates

• Filing date: Nov 28, 2000
• Grant date: Oct 24, 2006
• Expiry date: Mar 24, 2023

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04J13/0003
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

In an apparatus for generating a transmit sequence comprising information from a plurality of information channels, a first means serves for generating a plurality of different candidate channel sequences from information of a first information channel of the plurality of information channels using a first code sequence associated with the first information channel, wherein each candidate channel sequence carries the same information as the information of the first information channel. A second means is provided to provide at least one candidate channel sequence for a second information channel from the plurality of information channels using a second code sequence associated with the second information channel and differing from the first code sequence. To receive an optimum transmit sequence resulting in a minimum out-of-band radiation combined sequences are examined, wherein each combined sequence may be obtained by a combination of at least one candidate channel sequence from each information channel. After this either the combined sequence is selected resulting in a minimum out-of-band radiation or the optimum candidate channel sequences are selected from the individual inform…