System and method for rapid generation of low PAR Q-mode signals
AssigneeBroadcom Corporation
InventorArthur J. Carlson
Life of this patent
Estimating the term…
Abstract
In a data communication system, a transmitter of an ADSL modem uses a PRBS generator to generate a plurality of ADSL signals. The transmitter computes the Peak to Average (e.g., root-mean-square) (“PAR”) ratio of each of the ADSL signals generated. The ADSL signal having the lowest PAR is determined, and the corresponding state of the PRBS generator is noted. The signal having the lowest PAR, or at least the corresponding state of the PRBS generator, is then used to generate a Q-mode signal.
Claims11
A communication device comprising:
- a transmitter having a pseudo-random bit sequence (PRBS) generator operable to generate a plurality of pseudo-random bit sequences, the transmitter being operable to generate a plurality of symbols, each corresponding to one of the pseudo-random bit sequences, and to calculate the peak-to-average ratio (PAR) of each of the plurality of generated symbols, the transmitter being further operable to determine which of the plurality of symbols has a lowest PAR and to transmit an indication of said symbol to a remote transceiver.
A communication device comprising:
- a transmitter having a pseudo-random bit sequence (PRBS) generator operable to generate a plurality of pseudo-random bit sequences, the transmitter being operable to generate a plurality of symbols, each corresponding to one of the pseudo-random bit sequences, the transmitter being further operable to identify which of the plurality of generated symbols has a lowest peak-to-average ratio (PAR).
A method of operating a transmitter in a data communication device, the method comprising:
- generating a plurality of pseudo-random bit sequences;
- generating a plurality of symbols, each corresponding one of the pseudo-random bit sequences;
- calculating a peak-to-average ratio (PAR) of each of the plurality of generated symbols;
- determining which of the plurality of generated symbols has a lowest PAR;
- and
- transmitting an indication of which of the plurality of symbols has the lowest PAR to a remote transceiver.
Dependencies are inferred from the claim text.