Hierarchical trellis coded modulation
First Claim
Patent Images
1. A method of encoding a quantity of electronic information, the method comprising:
- encoding a first portion of the quantity of information using a high protection code encoder to produce a first coded portion of information;
encoding a second portion of the quantity of information using a low protection code encoder to produce a second coded portion of information; and
mapping the first coded portion of information, the second coded portion of information, and a third portion of the quantity of information to at least one symbol.
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Abstract
A system and method for encoding information is disclosed. In one embodiment, information is encoded using a high protection code for the least significant bit and a low protection code for the next three most significant bits. The remaining bits are uncoded. The high protection code may be a turbo code and the low protection code may be a trellis coded modulation code. In this embodiment, the collection of bits is then mapped according to a diagonally shifted QAM constellation technique.
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Citations
62 Claims
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1. A method of encoding a quantity of electronic information, the method comprising:
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encoding a first portion of the quantity of information using a high protection code encoder to produce a first coded portion of information;
encoding a second portion of the quantity of information using a low protection code encoder to produce a second coded portion of information; and
mapping the first coded portion of information, the second coded portion of information, and a third portion of the quantity of information to at least one symbol. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A system for encoding a quantity of electronic information, the system comprising:
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a high protection code encoder configured to encode a first portion of the quantity of information to produce a first coded portion of information;
a low protection code encoder configured to encode a second portion of the quantity of information to produce a second coded portion of information; and
a modulator configured to map the first coded portion of information, the second coded portion of information, and a third portion of the quantity of information to at least one symbol. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. A method for decoding a quantity of coded electronic information, the method comprising:
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at least partially decoding the quantity of coded information using a high protection code decoder to produce a first at least partially decoded quantity of information; and
at least partially decoding the first at least partially decoded quantity of information using a low protection code decoder to produce a second at least partially decoded quantity of information. - View Dependent Claims (32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43)
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44. A system for decoding a quantity of coded electronic information, the system comprising:
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a high protection code decoder configured to at least partially decode the quantity of information to produce a first at least partially decoded portion of information; and
a low protection code decoder configured to at least partially decode the first at least partially decoded portion of information to produce a second at least partially decoded portion of information. - View Dependent Claims (45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56)
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57. A method of encoding a sequence of bits, the method comprising:
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encoding a first portion of the sequence of bits according to a turbo code, the first portion of encoded bits including a least significant bit, to produce first encoded bits;
encoding a second portion of the sequence of bits according to a trellis code to produce second encoded bits; and
mapping a third portion of the sequence of bits, the first encoded bits, and the second encoded bits to at least one symbol.
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58. A system for encoding a quantity of electronic information, the system comprising:
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means for encoding a first portion of the quantity of information according to a high protection code to produce a first coded portion of information;
means for encoding a second portion of the quantity of information according to a low protection code to produce a second coded portion of information; and
means for mapping the first coded portion of information, the second coded portion of information, and a third portion of the quantity of information to at least one symbol.
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59. A computer readable medium containing instructions configured to cause a computer to:
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encode a first portion of a quantity of information according to a high protection code to produce a first coded portion of information;
encode a second portion of the quantity of information according to a low protection code to produce a second coded portion of information; and
map the first coded portion of information, the second coded portion of information, and a third portion of the quantity of information to at least one symbol.
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60. A method of decoding a sequence of bits, the method comprising:
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at least partially decoding the sequence of bits using a turbo code decoder to produce a first at least partially decoded sequence of bits; and
at least partially decoding the first at least partially decoded sequence of bits using a trellis coded modulation decoder to produce a second at least partially decoded sequence of bits.
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61. A system for decoding a quantity of coded electronic information, the system comprising:
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means for at least partially decoding the quantity of coded information according to a high protection code to produce a first at least partially decoded quantity of information; and
means for at least partially decoding the first at least partially decoded quantity of information according to a low protection code to produce a second at least partially decoded quantity of information.
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62. A computer readable medium containing instructions configured to cause a computer to:
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at least partially decode a quantity of coded information according to a high protection code to produce a first at least partially decoded quantity of information; and
at least partially decode the first at least partially decoded quantity of information according to a low protection code to produce a second at least partially decoded quantity of information.
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Specification