Performance evaluation of multicarrier channels
First Claim
Patent Images
1. A method of determining an uncoded bit error rate pb based on a target symbol error rate ε
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s, comprising;
determining the uncoded bit error rate pb based on a weighted series expansion of the target symbol error rate ε
s, comprising weights W that are a function of a maximum number of symbol errors that can be corrected t and a number of symbols in an information field K; and
selecting the maximum number of symbol errors t and the number of symbols in the information field K such that the uncoded bit error rate pb that produces a symbol error rate that is less than or equal to the target symbol error rate ε
s is largest.
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Abstract
A method and apparatus determines an uncoded bit error rate pb based on a target symbol error rate εs. The uncoded bit error rate pb is determined based on a weighted series expansion of the target symbol error rate εs, comprising weights W that are a function of a maximum number of symbol errors that can be corrected t and a number of symbols in an information field K. The maximum number of symbol errors t and the number of symbols in the information field K is selected such that the uncoded bit error rate pb that produces a symbol error rate that is less than or equal to the target symbol error rate εs is largest.
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Citations
65 Claims
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1. A method of determining an uncoded bit error rate pb based on a target symbol error rate ε
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s, comprising;
determining the uncoded bit error rate pb based on a weighted series expansion of the target symbol error rate ε
s, comprising weights W that are a function of a maximum number of symbol errors that can be corrected t and a number of symbols in an information field K; andselecting the maximum number of symbol errors t and the number of symbols in the information field K such that the uncoded bit error rate pb that produces a symbol error rate that is less than or equal to the target symbol error rate ε
s is largest. - View Dependent Claims (2, 3, 4)
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s, comprising;
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5. A method of determining an optimum bit load per subchannel in a multicarrier system with forward error correction, comprising:
computing one or more values of a maximum number of symbol errors that can be corrected t, and a number of symbols in the information field K to determine the optimum bit load per subchannel in accordance with the following relationship;
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6. A method of determining an optimum bit load per subchannel in a multicarrier system with forward error correction, comprising:
computing one or more values of a maximum number of symbol errors that can be corrected t, and a number of symbols in the information field K to determine the optimum bit load per subchannel in accordance with the following relationship; - View Dependent Claims (7)
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8. A method of selecting forward error correction parameters in a channel having a plurality of subchannels in a multicarrier communications system, comprising:
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determining a signal-to-noise ratio representing a subset of the subchannels; and selecting forward error correction parameters of the channel based on the signal-to-noise ratio. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method of determining a bit load b per subchannel in a multicarrier system with forward error correction, comprising:
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computing one or more values of a maximum number of symbol errors that can be corrected t, and a number of symbols in the information field K to determine the bit load per subchannel in accordance with the following relationship;
b=[γ
+Φ
(γ
,t,K,ε
)]/10 log 2 ,wherein - View Dependent Claims (19, 20)
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21. A method of selecting forward error correction parameters for use in a channel having a plurality of subchannels, comprising:
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determining an average signal-to-noise ratio of at least a subset of the subchannels; and selecting forward error correction parameters based on the average signal-to-noise ratio, and a count of the number of subchannels in the subset. - View Dependent Claims (22, 23)
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24. A method of selecting at least one forward error correction parameter, comprising:
computing one or more values representing a number of information symbols K in a frame accordance with the following relationship; - View Dependent Claims (25, 26, 27)
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28. A method of selecting transmission parameters of a multicarrier system having a channel comprising a plurality of subchannels, comprising:
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selecting a number (s) of discrete multi-tone symbols in a forward-error-correction frame, and a number (z) of forward-error-correction control symbols in a discrete multitone symbol based on a signal-to-noise ratio and a number of subchannels associated with the signal-to-noise ratio; and transmitting information in accordance with the selected number (s) of discrete multi-tone symbols, and a number (z) of forward-error-correction control symbols in the discrete multitone symbol. - View Dependent Claims (29, 30, 31, 32)
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33. An apparatus for determining an uncoded bit error rate pb based on a target symbol error rate ε
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s, comprising;
means for determining the uncoded bit error rate pb based on a weighted series expansion of the target symbol error rate ε
s, comprising weights W that are a function of a maximum number of symbol errors that can be corrected t and a number of symbols in an information field K; andmeans for selecting the maximum number of symbol errors t and the number of symbols in the information field K such that the uncoded bit error rate pb that produces a symbol error rate that is less than or equal to the target symbol error rate ε
s is largest. - View Dependent Claims (34, 35, 36)
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s, comprising;
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37. An apparatus for determining an optimum bit load per subchannel in a multicarrier system with forward error correction, comprising:
means for computing one or more values of a maximum number of symbol errors that can be corrected t, and a number of symbols in the information field K to determine the optimum bit load per subchannel in accordance with the following relationship;
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38. An apparatus for determining an optimum bit load per subchannel in a multicarrier system with forward error correction, comprising:
means for computing one or more values of a maximum number of symbol errors that can be corrected t, and a number of symbols in the information field K to determine the optimum bit load per subchannel in accordance with the following relationship; - View Dependent Claims (39)
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40. An apparatus for selecting forward error correction parameters in a channel having a plurality of subchannels in a multicarrier communications system, comprising:
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means for determining a signal-to-noise ratio representing a subset of the subchannels; and means for selecting forward error correction parameters of the channel based on the signal-to-noise ratio. - View Dependent Claims (41, 42, 43, 44, 45, 46, 47, 48, 49, 50)
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51. An apparatus for determining a bit load b per subchannel in a multicarrier system with forward error correction, comprising:
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means for computing one or more values of a maximum number of symbol errors that can be corrected t, and a number of symbols in the information field K to determine the bit load per subchannel in accordance with the following relationship;
b=[γ
+Φ
(γ
,t,K,ε
)]/10 log 2 ,wherein - View Dependent Claims (52, 53)
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54. An apparatus for selecting forward error correction parameters for use in a channel having a plurality of subchannels, comprising:
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means for determining an average signal-to-noise ratio of at least a subset of the subchannels; and means for selecting forward error correction parameters based on the average signal-to-noise ratio, and a count of the number of subchannels in the subset. - View Dependent Claims (55, 56)
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57. An apparatus for selecting at least one forward error correction parameter, comprising:
means for computing one or more values representing a number of information symbols K in a frame accordance with the following relationship; - View Dependent Claims (58, 59, 60)
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61. An apparatus for selecting transmission parameters of a multicarrier system having a channel comprising a plurality of subchannels, comprising:
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means for selecting a number (s) of discrete multi-tone symbols in a forward-error-correction frame, and a number (z) of forward-error-correction control symbols in a discrete multitone symbol based on a signal-to-noise ratio and a number of subchannels associated with the signal-to-noise ratio; and means for transmitting information in accordance with the selected number (s) of discrete multi-tone symbols, and a number (z) of forward-error-correction control symbols in the discrete multitone symbol. - View Dependent Claims (62, 63, 64, 65)
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Specification