Systems and methods for dual-carrier modulation encoding and decoding
AssigneeTexas Instruments Incorporated
InventorsAnuj Batra, Deric W. Waters
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Abstract
Systems and methods for dual-carrier modulation (DCM) encoding and decoding for communication systems. Some embodiments comprise a DCM encoder for applying a pre-transmission function to at least one 16-QAM input symbol and mapping resulting transformed symbols onto at least one larger constellation prior to transmission. Some embodiments joint decode, by a DCM decoder, a predetermined number of received data elements and compute a set of log-likelihood ratio (LLR) values for at least eight bits from a resulting at least one transformed symbol.
Claims25
A communications system, comprising:
- a dual carrier modulation (DCM) encoder for applying a pre-transmission function to at least one 16-QAM input symbol and mapping resulting transformed symbols onto at least one larger constellation prior to transmission.
A communications system, comprising:
- a dual carrier modulation (DCM) decoder able to jointly decode a predetermined number of received data elements and compute a set of log-likelihood ratio (LLR) values for at least eight bits from at least one resulting transformed symbol.
A method for communications, comprising:
- joint decoding, by a dual carrier modulation (DCM) decoder, a predetermined number of received data elements;
- and
- computing a set of log-likelihood ratio (LLR) values for at least eight bits from a resulting at least one transformed symbol.
Dependencies are inferred from the claim text.