EP1049283B1

5G,4G,3G

Title

Multiresolution transmission with multicarrier signals

Application Number:

EP20000114693

Publication Date:

24-04-2002

Current Assignee:

Family ID:

Application Date:

26-03-1993

Publication Country:

US

Priority Date:

26-03-1992

Title

Multiresolution transmission with multicarrier signals

Application Number:

EP20000114693

Family ID:

Publication Country:

US

Publication Date:

24-04-2002

Application Date:

26-03-1993

Priority Date:

26-03-1992

Current Assignee:

Abstract  Abstract

In the transmitter side data are divided into two or more groups according to importance. In a three groups system for example the data streams are then mapped onto a multiresolution constellation (QAM or modified PSK) in the following way. Ths most important data determine the quadrant the next most important determine which of four subsets is used in the quadrant and the least important determine which point is used within that subset. This mapping system allows receivers of differing capabilities to detect as much data as they are able or a single receiver to detect as much data as the channel quality allows. For example a QPSK receiver could detect the most important data a modified 16QAM receiver could detect the most important and second most important data while a modified 64QAM receiver could receive all the data. Furthermore in an OFDM system multiresolution transmission is provided by using long guard times and/or wider channel spacing (equivalently longer symbols) for the more important data.

Note:

The information in blue was extracted from the third parties (Standard Setting Organisation, Espacenet)

The information in grey was provided by the patent holder

The information in purple was extracted from the FrandAvenue

Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.

Implicitly disclosed patent:does not explicitly state certain aspects of the invention, but still allows for these to be inferred from the information provided.

Basis patent:The core patent in a family, outlining the fundamental invention from which related patents or applications originate.

Family member:related patents or applications that share a common priority or original filing.