System and apparatus for, and method of, interfacing a demodulator and a forward error correction decoder
First Claim
1. A method for interfacing a demodulator and a decoder, the demodulator outputting a first number of bits per baud having a first encoding at a first baud rate, and the decoder requiring a second number of bits per baud having a second encoding at a second baud rate, the method comprising the steps of:
- (a) receiving from the demodulator the first number of bits per baud having the first encoding at the first baud rate;
(b) encoding the first number of bits per baud to form encoded data bits having the second encoding different than the first encoding; and
(c) sending the encoded data bits to the decoder by outputting the encoded data bits formatted as the second number of bits per baud at the second baud rate.
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Accused Products
Abstract
A system (400) and apparatus (200, 300) for, and method (100) of, interfacing a demodulator and a forward error correction decoder enables a forward error correction decoder to be used in conjunction with an otherwise incompatible demodulator. Data received from the demodulator having a first encoding and formatted as M bits per baud at a first baud rate is encoded into data having a second encoding. The data having the second encoding is output to the forward error correction decoder as N bits per baud at a second baud rate as required by the forward error correction decoder.
24 Citations
26 Claims
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1. A method for interfacing a demodulator and a decoder, the demodulator outputting a first number of bits per baud having a first encoding at a first baud rate, and the decoder requiring a second number of bits per baud having a second encoding at a second baud rate, the method comprising the steps of:
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(a) receiving from the demodulator the first number of bits per baud having the first encoding at the first baud rate; (b) encoding the first number of bits per baud to form encoded data bits having the second encoding different than the first encoding; and (c) sending the encoded data bits to the decoder by outputting the encoded data bits formatted as the second number of bits per baud at the second baud rate. - View Dependent Claims (2)
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- 3. The method of claim 3 wherein the second encoding consists of scrambling, convolutional coding, Reed-Solomon block coding, and interleaving.
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5. A converter for interfacing a demodulator and a decoder, the demodulator outputting a first number of bits per baud having a first encoding at a first baud rate, and the decoder requiring a second number of bits per baud having a second encoding at a second baud rate, the converter comprising:
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(a) a demodulator interface logic operably coupled to the demodulator to receive the first number of bits per baud having the first encoding the first baud rate; and (b) an encoder operably coupled to the demodulator interface logic, the encoder encoding the first number of bits per baud to form encoded data bits having the second encoding different than the first encoding and sending the encoded data bits to the decoder by outputting the encoded data bits formatted as the second number of bits per baud at the second baud rate. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. An apparatus for interfacing a demodulator to a decoder in a data communication system, the data communication system having a communication medium, the communication medium having a plurality of communication channels, the apparatus comprising:
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(a) a processor; (b) a memory integral with or operably coupled to the processor; (c) a network interface operably coupled to the processor; and (d) a channel interface, operably coupled to the processor and coupleable to the communication medium, for reception of encoded data on a first communication channel of the plurality of communication channels, the channel interface further comprising; (1) a demodulator; (2) a converter, operably coupled to the demodulator, for receiving first data from the demodulator, said first data having a first encoding and received from the demodulator formatted as a first number of bits per baud at a first baud rate, and for converting the first data to second data having a second encoding and output by the converter formatted as a second number of bits per baud at a second baud rate; and (3) a decoder, operably coupled to the converter, for receiving the second data from the converter at the second baud rate. - View Dependent Claims (23)
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24. A data communication system for interfacing a demodulator to a decoder in a data communication system, the data communication system having a communication medium, the communication medium having a plurality of communication channels, the data communication system comprising:
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(a) a primary station, operably coupled to the communication medium, for transmitting first data having a first encoding and transmitted as a first number of bits per baud at a first baud rate on a first communication channel of the plurality of communication channels; and (b) a secondary station of a plurality of secondary stations, operably coupled to the communication medium, for receiving first data from the first communication channel of the plurality of communication channels, the secondary station further comprising; (1) a demodulator; (2) a converter, operably coupled to the demodulator, for receiving first data from the demodulator, said first data having a first encoding and received from the demodulator formatted as a first number of bits per baud at a first baud rate, and for converting the first data to second data having a second encoding and output by the converter formatted as a second number of bits per baud at a second baud rate; and (3) a decoder, operably coupled to the converter, for receiving the second data from the converter at the second baud rate. - View Dependent Claims (25)
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26. A converter for interfacing a demodulator and a decoder, the demodulator outputting a first number of bits per baud having a first encoding at a first baud rate, and the decoder requiring a second number of bits per baud having a second encoding at a second baud rate, the converter comprising:
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(a) means for receiving from the demodulator the first number of bits per baud having the first encoding at the first baud rate; (b) means for encoding the first number of bits per baud to form encoded data bits having the second encoding different than the first encoding; and (c) means for sending the encoded data bits to the decoder by outputting the encoded data bits formatted as the second number of bits per baud at the second baud rate.
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Specification