摘要:
A data processing device and a data processing method capable of improving the resistance to error of data. An LDPC encoder performs encoding using an LDPC code having a code length of 4320 bits and a coded rate of one of four types including ½, 7/12, ⅔, ¾. A parity check matrix H of the LDPC code is configured by arranging elements of 1's of an information matrix, which are determined based on a parity check matrix initial value table of the parity check matrix H representing positions of elements of 1's of the information matrix corresponding to an information length according to the code length and the coded rate for every 72 columns, in a column direction at a period of 72 columns. The parity check matrix initial value table, for example, is used for digital broadcasting for mobile terminals.
摘要:
The present invention relates to a data processing device and a data processing method capable of improving the resistance to error of data. An LDPC encoder 115 performs encoding using an LDPC code having a code length of 4320 bits and a coded rate of one of four types including ½, 7/12, ⅔, ¾. A parity check matrix H of the LDPC code is configured by arranging elements of 1's of an information matrix, which are determined based on a parity check matrix initial value table of the parity check matrix H representing positions of elements of 1's of the information matrix corresponding to an information length according to the code length and the coded rate for every 72 columns, in a column direction at a period of 72 columns. The parity check matrix initial value table, for example, is used for digital broadcasting for mobile terminals. The present invention can be applied in a case where LDPC encoding is performed.
摘要:
A data processing device and a data processing method capable of improving resistance to errors. Code bits of an LDPC code with a code length N of 16200 bits is written to, for example, eight storage units. When the code bits are stored in the storage units, a process of changing the storage start position of the code bits for each storage unit is performed as a sorting process of sorting the bits of the LDPC code such that a plurality of code bits corresponding to 1s in an arbitrary row of the parity check matrix of the LDPC code are not included in a single symbol which is read from the storage units. The present technology can be applied to, for example, the transmission of the LDPC code.
摘要:
The present invention relates to an encoder for error correction code encoding input data words (D) into codewords (Z1, Z2), comprising: an encoder input (1451) for receiving input data words (D) each comprising a first number Kldpc of information symbols, an encoding means (1452) for encoding an input data word (D) into a codeword (Z1, Z2, Z3, Z4) such that a codeword comprises a basic codeword portion (B) including a data portion (D) and a basic parity portion (Pb) of a second number Nldpc−Kldpc of basic parity symbols, and an auxiliary codeword portion (A) including an auxiliary parity portion (Pa) of a third number MIR of auxiliary parity symbols, wherein said encoding means (14) is adapted i) for generating said basic codeword portion (B) from an input data word (D) according to a first code, wherein a basic parity symbol is generated by accumulating an information symbol at a parity symbol address determined according to a first address generation rule, and ii) for generating said auxiliary codeword portion (A) from an input data word (D) according to a second code, wherein an auxiliary parity symbol is generated by accumulating an information symbol m at a parity symbol address γ, wherein said parity symbol addresses γ are determined according to a second address generation rule Nldpc−Kldpc+{x+m mod Ga×QIR} mod MIR if x>Nldpc−Kldpc, wherein x denotes the addresses of a parity symbol accumulator corresponding to the first information symbol of a group of size Ga and QIR is an auxiliary code rate dependent, predefined constant, and an encoder output (1454) for outputting said codewords (Z1, Z2).
摘要翻译:本发明涉及一种用于将输入数据字(D)编码成码字(Z1,Z2)的纠错码的编码器,包括:编码器输入端(1451),用于接收输入数据字(D),每个输入数据字包括第一数字信号Kldpc 符号,用于将输入数据字(D)编码为码字(Z1,Z2,Z3,Z4)的编码装置(1452),使得码字包括基本码字部分(B),其包括数据部分(D)和 基本奇偶校验符号的第二编号Nldpc-Kldpc的基本奇偶校验部分(Pb)和包括辅助奇偶校验符号的第三数量MIR的辅助奇偶校验部分(Pa)的辅助码字部分(A),其中所述编码装置 )适于i)用于根据第一代码从输入数据字(D)产生所述基本码字部分(B),其中通过在根据第一代码确定的奇偶校验符号地址处累积信息符号来生成基本奇偶校验符号 地址生成规则,和ii)生成s 根据第二代码从输入数据字(D)辅助辅助码字部分(A),其中通过在奇偶校验符号地址γ处累积信息符号m来生成辅助奇偶校验符号,其中所述奇偶校验符号地址γ根据 如果x> Nldpc-Kldpc,则到第二地址生成规则Nldpc-Kldpc + {x + m mod Ga×QIR} mod MIR,其中x表示对应于大小为Ga的组的第一信息符号的奇偶校验符号累加器的地址, QIR是辅助代码速率相关的预定义常数,以及用于输出所述码字(Z1,Z2)的编码器输出(1454)。
摘要:
The present invention relates to an encoder for error correction code encoding input data words (D) into codewords (Z1, Z2), comprising: an encoder input (1451) for receiving input data words (D) each comprising a first number Kldpc of information symbols, an encoding means (1452) for encoding an input data word (D) into a codeword (Z1, Z2, Z3, Z4) such that a codeword comprises a basic codeword portion (B) including a data portion (D) and a basic parity portion (Pb) of a second number Nldpc−Kldpc of basic parity symbols, and an auxiliary codeword portion (A) including an auxiliary parity portion (Pa) of a third number MIR of auxiliary parity symbols, wherein said encoding means (14) is adapted i) for generating said basic codeword portion (B) from an input data word (D) according to a first code, wherein a basic parity symbol is generated by accumulating an information symbol at a parity symbol address determined according to a first address generation rule, and ii) for generating said auxiliary codeword portion (A) from an input data word (D) according to a second code, wherein an auxiliary parity symbol is generated by accumulating an information symbol m at a parity symbol address γ, wherein said parity symbol addresses γ are determined according to a second address generation rule Nldpc−Kldpc+{x+m mod Ga×QIR} mod MIR if x>Nldpc−Kldpc, wherein x denotes the addresses of a parity symbol accumulator corresponding to the first information symbol of a group of size Ga and QIR is an auxiliary code rate dependent, predefined constant, and an encoder output (1454) for outputting said codewords (Z1, Z2).
摘要翻译:本发明涉及一种用于将输入数据字(D)编码成码字(Z1,Z2)的纠错码的编码器,包括:编码器输入端(1451),用于接收输入数据字(D),每个输入数据字包括第一数字信号Kldpc 符号,用于将输入数据字(D)编码为码字(Z1,Z2,Z3,Z4)的编码装置(1452),使得码字包括基本码字部分(B),其包括数据部分(D)和 基本奇偶校验符号的第二编号Nldpc-Kldpc的基本奇偶校验部分(Pb)和包括辅助奇偶校验符号的第三数量MIR的辅助奇偶校验部分(Pa)的辅助码字部分(A),其中所述编码装置 )适于i)用于根据第一代码从输入数据字(D)产生所述基本码字部分(B),其中通过在根据第一代码确定的奇偶校验符号地址处累积信息符号来生成基本奇偶校验符号 地址生成规则,和ii)生成s 根据第二代码从输入数据字(D)辅助辅助码字部分(A),其中通过在奇偶校验符号地址γ处累积信息符号m来生成辅助奇偶校验符号,其中所述奇偶校验符号地址γ根据 如果x> Nldpc-Kldpc,则到第二地址生成规则Nldpc-Kldpc + {x + m mod Ga×QIR} mod MIR,其中x表示对应于大小为Ga的组的第一信息符号的奇偶校验符号累加器的地址, QIR是辅助代码速率相关的预定义常数,以及用于输出所述码字(Z1,Z2)的编码器输出(1454)。
摘要:
A data processing device and a data processing method capable of improving resistance to errors. Code bits of an LDPC code with a code length N of 16200 bits is written to, for example, eight storage units. When the code bits are stored in the storage units, a process of changing the storage start position of the code bits for each storage unit is performed as a sorting process of sorting the bits of the LDPC code such that a plurality of code bits corresponding to 1s in an arbitrary row of the parity check matrix of the LDPC code are not included in a single symbol which is read from the storage units. The present technology can be applied to, for example, the transmission of the LDPC code.
摘要:
The present technique relates to a data processing device and a data processing method that enable resistance to error of data to be improved.In the case in which an LDPC code having a code length of 16200 bits and an encoding rate of 8/15 is mapped to 16 signal points, if (#i+1)-th bits from most significant bits of sign bits of 4×2 bits and symbol bits of 4×2 bits of two consecutive symbols are set to bits b#i and y#i, respectively, a demultiplexer performs interchanging to allocate b0, b1, b2, b3, b4, b5, b6, and b7 to y0, y4, y3, y1, y2, y5, y6, and y7, respectively. The present technique can be applied to a transmission system or the like transmitting an LDPC code.
摘要:
Data processing devices and data process methods that can increase tolerance for data errors. An LDPC encoder performs encoding with an LDPC code having the code length of 16200 bits and one of the six code rates of 1/5, 1/3, 2/5, 4/9, 3/5, and 2/3. The parity check matrix H of the LDPC code is formed by arranging the elements “1” of an information matrix in the column direction in 360-column cycles, the information matrix corresponding to the information length of the parity check matrix H, the information length corresponding to the code length and the code rate, the information matrix being defined by a check matrix initial value table that shows the positions of the elements “1” of the information matrix at intervals of 360 columns. The check matrix initial value table is designed for digital broadcasting intended for portable terminals, for example. The present invention can be applied to cases where LDPC encoding and LDPC decoding are performed.
摘要:
The present technology relates to a data-processing device and a data-processing method, which are capable of improving tolerance for an error of data.When an LDPC code having a code length of 16200 bits is mapped to 16 signal points, a demultiplexer performs exchanging such that when a (#i+1)-th bit from a most significant bit of code bits of 4×2 bits and a (#i+1)-th bit from a most significant bit of symbol bits of 4×2 bits of 2 consecutive symbols are represented by a bit b#i and a bit y#i, respectively, for LDPC codes having coding rates of 1/5, 4/15, and 1/3, b0 is allocated to y4, b1 is allocated to y3, b2 is allocated to y2, b3 is allocated to y1, b4 is allocated to y6, b5 is allocated to y5, b6 is allocated to y7, and b7 is allocated to y0. For example, the present invention can be applied to a transmission system that transmits an LDPC code or the like.
摘要:
The present invention relates to a data processing device and a data processing method capable of improving the resistance to data error. In a case where an LDPC code having a code length of 4,320 bits is mapped into 16 signal points, when a code bit of 4×2 bits and the (#i+1)-th bit from the most significant bit of symbol bits of 4×2 bits of two consecutive symbols are bits b#i and y#i, a demultiplexer performs an interchange process in which b0 is allocated to y0, b1 is allocated to y4, b2 is allocated to y1, b3 is allocated to y6, b4 is allocated to y2, b5 is allocated to y5, b6 is allocated to y3, and b7 is allocated to y7 for an LDPC code having a coded rate of 1/2, and b0 is allocated to y0, b1 is allocated to y4, b2 is allocated to y5, b3 is allocated to y2, b4 is allocated to y1, b5 is allocated to y6, b6 is allocated to y3, and b7 is allocated to y7 for an LDPC code having a coded rate of 7/12, 2/3, and 3/4. The present invention, for example, can be applied to a transmission system transmitting an LDPC code and the like.