Coding device and communication system using the same
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Abstract
A coding device includes a coding circuit for converting a digital input into a coded output having a greater number of bits than the input, an interleaving circuit for combining a plurality of words of the coded output and producing therefrom a data block having a plurality of the interleaved words, and a puncturing circuit or repeating circuit for puncturing or repeating bits from the data block. The puncturing or repeating circuit uses a deleting or repeating pattern to provide data words for transmission during respective frames of a transmission channel. The deleting or repeating pattern is selected depending upon the characteristics of the coding circuit and of the interleaving circuit. The coding device is for use in a cordless communication system.
19 Citations
26 Claims
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1-10. -10. (canceled)
- 11. A communication system comprising a transmitter and a receiver, the transmitter comprising a digital input, a coding device for generating data bits for transmission, and means for transmitting the data bits during respective frames of a transmission channel, the coding device comprising a coding circuit for generating a coded output having a greater number of bits than the digital input, an interleaving circuit for operating on the coded output to generate a data block comprising a plurality of interleaved words, and a rate matching circuit for adjusting the number of bits in the data block, the rate matching circuit having means for adjusting the number of bits in the data block using a rate matching pattern to provide data bits, and means for selecting the rate matching pattern depending on an associated bit deletion or repetition pattern that is selected to ensure that the deleted or repeated bits of the data block are not required to enable all bits from the digital input to be reconstructed, and the receiver comprising means for receiving the data bits and a data reconstruction circuit having means for adjusting the number of bits in the data block to reverse the action of the rate matching circuit, thereby reconstructing the interleaved words, a de-interleaving circuit having means for generating each of the plurality of interleaved words, and a channel decoder, the data reconstruction circuit having means for selecting the rate matching pattern depending on the characteristics of the coding device.
- 24. A method of operating a communication system comprising a transmitter and a receiver, the method comprising the transmitter operating on the digital input to generate a coded output having a greater number of bits than the digital input, operating on the coded output to generate a data block comprising a plurality of interleaved words and adjusting the number of bits in the data block using a rate matching pattern to provide data bits for transmission during respective frames of a transmission channel, and the receiver receiving the data bits, adjusting the number of bits in the data block to reverse the action of the rate matching operation, thereby reconstructing the interleaved words, and de-interleaving and decoding the interleaved words to reverse the actions of the interleaving and coding operations, wherein the rate matching pattern is selected depending on an associated bit deletion or repetition pattern that is selected to ensure that the deleted or repeated bits are not required to enable all bits from the digital input to be reconstructed.
Specification