US 2001/0012783 A1 · Carrier constellation information in multi-carrier systems

Abstract

In a multi-carrier system, the carriers (f0 . . . f511, f512 . . . f1023, . . . , f3584 . . . f4095) are grouped in subsets (SUBSET1; SUBSET2; . . . ; SUBSET8). A constellation information transmitting arrangement (BiGi_TA), for instance located in the multi-carrier receiver (RX), produces for each carrier subset (SUBSET1; SUBSET2; . . . ; SUBSET8) a limited set of parameter values (B1, G1; B2, G2; . . . ; BG8) and transmits these sets of parameter values (B1, G1; B2, G2; . . . ; B8, G8) to a constellation information receiving arrangement (BiGi_RA), for instance located in the multi-carrier transmitter (TX). Through interpolation of the limited set of parameter values (BG1; B2, G2; . . . ; BG8) the latter constellation information receiving arrangement (BiGi_RA) determines the constellation where each carrier (f0 . . . f511, f512 . . . f1023, . . . , f3584 . . . f4095) of a carrier subset (SUBSET1; SUBSET2;. . . ; SUBSET8) will be modulated with.

Claims10

Dependent claims

Constellation information transmitting arrangement (BiGi_TA) for use in a multi-carrier transmitter (TX) or multi-carrier receiver (RX) of a multi-carrier system, said arrangement (BiGi_TA) comprising means (BiGi_PROD) for producing carrier constellation information indicative for constellations where respective carriers will be modulated with by said multi-carrier transmitter (TX), and means (BiGi_TX) for transmitting said carrier constellation information,

characterised in that said means (BiGi_PROD) for producing carrier constellation information is adapted to produce for at least one respective carrier subset (SUBSET1, SUBSET2, . . . , SUBSET8) a set of parameter values (B1, G1;
B2, G2;
. . . ;
B8, G8) from which constellations of all carriers (f0 . . . f511, f512 . . . f1023, . . . , f3584 . . . f4095) in said at least one respective carrier subset (SUBSET1;
SUBSET2;
. . . ;
SUBSET8) can be retrieved through interpolation.

4 more elements

Constellation information receiving arrangement (BiGi_RA) for use in a multi-carrier transmitter (TX) or multi-carrier receiver (RX) of a multi-carrier system, said arrangement (BiGi_RA) comprising means (BiGi_RX) for receiving carrier constellation information indicative for constellations where respective carriers will be modulated with by said multi-carrier transmitter (TX), and means (BiGi_DET) for determining said constellations from said carrier constellation information,

characterised in that said means (BiGi_DET) for determining said constellations comprise interpolating means adapted to retrieve constellations of all carriers (f0. . . f511, f512 . . . f1023, . . . , f3584 . . . f4095) in at least one respective carrier subset (SUBSET1;
SUBSET2;
. . . ;
SUBSET8) from a respective set of parameter values (B1, G1;
B2, G2;
. . . ;
B8, G8) that forms part of said carrier constellation information.

4 more elements

Dependencies are inferred from the claim text.

Carrier constellation information in multi-carrier systems

Life of this patent

Carrier constellation information in multi-carrier systems

Life of this patent

Abstract

Claims10