Procedure for BPSK modulation with reduced envelope peaking
AssigneeConexant Systems, Inc.
InventorDonald Brian Eidson
Life of this patent
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Abstract
A system for and method of mapping successive bits of digital data into BPSK symbols using one or more BPSK symbol constellations such that orthogonal BPSK constellations are applied to successive bits of the digital data. The system and method may toggle between applying first and second orthogonal constellations as successive bits of the digital data are encountered. Alternatively, the system and method may successively rotate by 90° the constellation to be applied as successive bits of the digital data are encountered.
Claims20
A system for mapping digital data into BPSK symbols comprising:
- first logic for mapping successive bits of the digital data into successive BPSK symbols using one or more BPSK constellations;
- and
- second logic for providing the one or more BPSK constellations to be applied by the first logic in mapping bits of the digital data into BPSK symbols such that orthogonal BPSK constellations are applied to successive bits of the digital data.
A system for mapping digital data into BPSK symbols comprising:
- first logic for mapping successive bits of the digital data into successive BPSK symbols using one or more BPSK constellations;
- second logic for providing the one or more BPSK constellations to be applied by the first logic in mapping bits of the digital data into BPSK symbols such that orthogonal BPSK constellations are applied to successive bits of the digital data;
- and
- third logic for toggling a state bit between first and second states as successive bits of the digital data are encountered, wherein the second logic provides a first constellation to be applied by the first logic if the state bit is in the first state, and provides a second constellation orthogonal to the first to be applied by the first logic if the state bit is in the second state.
A method of mapping digital data into BPSK symbols comprising:
- mapping a bit of the digital data into a BPSK symbol using a first BPSK constellation;
- and
- mapping a next successive bit of the digital data into a BPSK symbol using a second BPSK constellation orthogonal to the first.
A system for mapping digital data into BPSK symbols comprising:
- first means for mapping successive bits of the digital data into successive BPSK symbols using one or more BPSK constellations;
- and
- second means for providing the one or more BPSK constellations to be applied by the first means in mapping successive bits of the digital data into BPSK symbols such that orthogonal BPSK constellations are applied to successive bits of the digital data.
A method of mapping digital data into BPSK symbols comprising:
- a step for mapping a bit of the digital data into a BPSK symbol using a first BPSK constellation;
- and
- a step for mapping a next successive bit of the digital data into a BPSK symbol using a second BPSK constellation orthogonal to the first.
A method of mapping digital data into BPSK symbols comprising:
- mapping successive bits of the digital data into successive BPSK symbols using one or more BPSK constellations;
- providing the one or more BPSK constellations to be applied in mapping bits of the digital data into BPSK symbols such that orthogonal BPSK constellations are applied to successive bits of the digital data;
- and
- toggling a state bit between first and second states as successive bits of the digital data are encountered, wherein a first constellation is applied if the state bit is in the first state, and a second constellation orthogonal to the first is applied if the state bit is in the second state.
Dependencies are inferred from the claim text.