Transceiver with frequency error compensation
AssigneeSilicon Laboratories Inc.
InventorsHendricus de Ruijter, Ping Xiong
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Abstract
A method for operating a communications system includes transmitting a preamble sequence including a plurality of tones. Each tone of the plurality of tones has a first characteristic and a second characteristic. The first characteristic of each of the tones of the plurality of tones has a predetermined relative relationship to the first characteristic of each of the other tones of the plurality of tones and the second characteristic of each of the tones of the plurality of tones has a predetermined relative relationship to the second characteristic of each of the other tones of the plurality of tones. The first and second characteristics may include relative power and relative phase.
Claims20
A method for operating a communications system comprising:
- transmitting a preamble sequence including a plurality of tones, each tone of the plurality of tones having a first characteristic and a second characteristic, wherein the first characteristic of each of the tones of the plurality of tones has a first predetermined relative relationship to the first characteristic of each of the other tones of the plurality of tones and the second characteristic of each of the tones of the plurality of tones has a second predetermined relative relationship to the second characteristic of each of the other tones of the plurality of tones.
A communications system comprising:
- a transmitter configured to generate a preamble sequence including a plurality of tones, each tone of the plurality of tones having a first characteristic and a second characteristic, wherein the first characteristic of each of the tones of the plurality of tones has a first predetermined relative relationship to the first characteristic of each of the other tones of the plurality of tones and the second characteristic of each of the tones of the plurality of tones has a second predetermined relative relationship to the second characteristic of each of the other tones of the plurality of tones;
- and
- an antenna configured to transmit the preamble sequence.
An apparatus comprising:
- means for receiving a received signal;
- and
- means for generating an adjustment signal based on the received signal including a preamble sequence, the adjustment signal causing a narrowband received signal to be positioned within a frequency band of a narrowband channel filter responsive to a frequency shifted version of a wideband received signal.
Dependencies are inferred from the claim text.