Method for reducing signaling overhead in a multicarrier system with dyanamic bit allocation and corresponding transmission/receiver device
AssigneeSiemens Aktiengesellschaft
InventorsEdgar Bolinth, Wolfgang Groting, Ralf Kern, Giancarlo Lombardi
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Abstract
The invention relates to a method for reducing signaling overhead in a multicarrier system with dynamic bit allocation per subcarrier and to a corresponding transmitter/receiver device, wherein an established bit allocation table (BAT) that is provided with an index (I) is stored in a BAT storage device (LUT). In order to reduce signaling overhead, only the corresponding index (I)of an existing bit allocation table is transmitted (S6).
Claims16
Method for reducing signaling overhead in a multicarrier system with dynamic bit allocation with the stages:
- a) establishment of the transmission characteristics of a transmission channel (S1);
- b) establishment of a bit allocation table (BAT) based on the established transmission characteristics (S2);
- c) comparison of the established bit allocation table (BAT) with bit allocation tables stored and indexed in a storage device (LUT) (S3);
- whereby
- d) if the established bit allocation table corresponds to one of the stored bit allocation tables, only an index I of the corresponding stored bit allocation table (BAT) is transmitted to implement a BAT alignment during signaling (S6).
Receiver device for reducing signaling overhead in a multicarrier system with dynamic bit allocation with:
- a bit loading device (8) for generating bit allocation tables (BAT) based on established channel characteristics;
- a receiver control unit (SER) for analyzing the generated bit allocation tables (BAT);
- and
- a BAT storage device (LUT) for storing a number of bit allocation tables,
- characterized in that the BAT storage device (LUT) also stores an index (I) for each bit allocation table,
- the receiver control unit (SER) only outputs an index (I) for transmission to implement a BAT alignment during signaling, if the generated bit allocation table corresponds to a bit allocation table stored in the BAT storage device (LUT), and
- adjustment to modified channel characteristics is carried out based on the generated bit allocation table.
Transmitter device for reducing signaling overhead in a multicarrier system with dynamic bit allocation with:
- a transmitter control unit (SEs) for analyzing a received bit allocation table and/or an index (I) and/or a difference (D) in respect of a subsequent bit allocation table;
- and a BAT storage device (LUT) for storing the received bit allocation tables and the corresponding indices, whereby adjustment to modified channel characteristics takes place based on the bit allocation table stored under the received index (I).
Dependencies are inferred from the claim text.