Channel interleaving/de-interleaving apparatus in a communication system using a low density parity check code and control method thereof
AssigneeSamsung Electronics Co., Ltd.
InventorsGyu-Bum Kyung, Seung-Hoon Choi, Jae-Yoel Kim, Sung-Eun Park
Life of this patent
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Abstract
In a communication system, information data bits are encoded in a preset coding scheme when the information data bits are input, and a Low Density Parity Check (LDPC) codeword is generated. The LDPC codeword is interleaved according to a preset channel-interleaving rule. A channel-interleaved LDPC codeword is modulated in a preset modulation scheme and a modulation symbol is generated.
Claims40
A channel interleaving apparatus in a communication system, comprising:
- an encoder for encoding information data bits in a preset coding scheme when the information data bits are input, and generating a Low Density Parity Check (LDPC) codeword;
- a channel interleaver for interleaving the LDPC codeword according to a preset channel interleaving rule;
- and
- a modulator for modulating a channel-interleaved LDPC codeword in a preset modulation scheme and generating a modulation symbol.
A channel interleaving method in a communication system, comprising
- encoding information data bits in a preset coding scheme when the information data bits are input, and generating a Low Density Parity Check (LDPC) codeword;
- interleaving the LDPC codeword according to a preset channel interleaving rule;
- and
- modulating a channel-interleaved LDPC codeword in a preset modulation scheme and generating a modulation symbol.
A channel deinterleaving apparatus in a communication system, comprising:
- a demodulator for demodulating a received signal in a demodulation scheme associated with a modulation scheme applied to a channel interleaving apparatus associated with the channel deinterleaving apparatus;
- a channel deinterleaver for deinterleaving the demodulated signal in a channel deinterleaving scheme associated with a channel interleaving scheme applied to the channel interleaving apparatus;
- and
- a decoder for decoding a channel-deinterleaved signal in a decoding scheme associated with a coding scheme of a Low Density Parity Check (LDPC) codeword applied to the channel interleaving apparatus and recovering information data bits.
A channel deinterleaving method in a communication system, comprising the steps of:
- demodulating a received signal in a demodulation scheme associated with a modulation scheme applied at a time of channel interleaving;
- deinterleaving a demodulated signal in a channel deinterleaving scheme associated with the channel interleaving scheme applied at the time of the channel interleaving;
- and
- decoding the channel-deinterleaved signal in a decoding scheme associated with a coding scheme of a Low Density Parity Check (LDPC) codeword applied at the time of the channel interleaving and recovering information data bits.
Dependencies are inferred from the claim text.