BIT ALOCATION AMONG CARRIERS IN MULTICARRIER COMMUNICATIONS
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0 Petitions
Accused Products
Abstract
A technique is provided that may be employed in multicarrier communications to improve the efficiency of error correction using symbol-oriented error correction methodologies, by reducing the number of error correction code symbols (102, 104 . . . ) that are received in error that result from a single channel error. More specifically, in this technique, bits from the symbols are allocated among the channels in such a way as to minimize the number of respective channels that are allocated bits belonging to more that one respective symbol during a respective transmission period.
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Citations
81 Claims
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1-38. -38. (canceled)
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39. A multicarrier data modulation method, comprising:
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using a plurality of carrier signals, by a transmitter, to modulate a plurality of data bit signals of a serial input data stream, wherein subsets of the plurality of data bit signals comprise error correction symbols, and wherein a number of data bit signals modulable on at least one carrier signal is fewer than a bit size of one of the error correction symbols; and allocating, by the transmitter, the plurality of data bit signals among the plurality of carrier signals, wherein said allocating includes accounting for a number of carrier signals that modulate data bit signals belonging to different error correction symbols during a transmission period. - View Dependent Claims (40, 41, 42, 43, 44)
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45. A method for modulating data bit signals over a transmission channel having a plurality of subchannels, comprising:
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including, by a transmitter, a predetermined number of data bit signals of an input data stream in each of a plurality of error correction symbols; and allocating, by the transmitter, a plurality of data bit signals among groups of the plurality of subchannels such that a number of subchannels that modulate data bit signals from more than one error correction symbol during a transmission period is reduced or minimized. - View Dependent Claims (46, 47, 48, 49, 50, 51, 52, 53)
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54. A multicarrier modulation system, comprising:
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a transceiver configured to generate a plurality of carrier signals for use in modulating a plurality of data bit signals of a serial input data stream; and a processor coupled to the transceiver and configured to; cause the transceiver to transmit the plurality of data bit signals over a plurality of carrier signals, wherein subsets of the plurality of data bit signals comprise error correction symbols, and wherein a number of data bit signals modulable on at least one carrier signal is fewer than a bit size of a one of the error correction symbols; and allocate the plurality of data bit signals among the plurality of carrier signals, such that a number of carrier signals that are to modulate data bit signals belonging to different error correction symbols during a transmission period is accounted for. - View Dependent Claims (55, 56, 57, 58, 59)
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60. A multicarrier modulation system, comprising:
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a transceiver configured to generate a plurality of carrier signals for use in modulating a plurality of data bit signals of a serial input data stream; and a processor coupled to the transceiver and configured to; include a predetermined number of data bit signals of the serial input data stream in each of a plurality of error correction symbols; and allocate the plurality of data bit signals among groups of subchannels of a plurality of subchannels such that a number of subchannels that are to modulate data bit signals from more than one error correction symbol during a transmission period is reduced or minimized. - View Dependent Claims (61, 62, 63, 64, 65, 66, 67)
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68. A computer-readable memory, comprising stored computer-executable program instructions configured to cause an apparatus, in response to execution of the program instructions by the apparatus, to perform operations comprising:
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transmitting a plurality of data bit signals of a serial input data stream over a plurality of carrier signals, wherein subsets of the plurality of data bit signals comprise error correction symbols, and wherein a number of data bit signals modulable on at least one carrier signal is fewer than a bit size of a one of the error correction symbols; and allocating the plurality of data bit signals among the plurality of carrier signals, such that a number of carrier signals that are to modulate data bit signals belonging to different error correction symbols during a transmission period is accounted for. - View Dependent Claims (69, 70, 71, 72, 73)
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74. A computer-readable memory, comprising stored computer-executable program instructions configured to cause an apparatus, in response to execution of the program instructions by the apparatus, to perform operations comprising:
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including a predetermined number of data bit signals of an input data stream in each of a plurality of error correction symbols; and allocating a plurality of data bit signals among groups of subchannels of a plurality of subchannels such that a number of subchannels that are to modulate data bit signals from more than one error correction symbol during a transmission period is reduced or minimized. - View Dependent Claims (75, 76, 77, 78, 79, 80, 81)
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Specification