摘要:
The present invention relates to an apparatus and a corresponding method demapping a demapping input data stream (Q′) having a channel bandwidth received in a multi-carrier broadcast system into a demapping output data stream (Sy′). The demapping input data stream (Q′) comprises, alternately arranged, one or more first and one or more second frames (F1, F2) having different frame structures. In an embodiment a stream demapping means (132) is provided for demapping said second frames from said demapping input data stream (Q′), and a frame demapping means (134) is provided for demapping said second frames (F2) comprising a preamble portion (40) and a payload portion (50) into said demapping output data stream (Sy′), wherein said frame demapping means (134) is adapted for demapping the signalling data (Si) from the preamble portion (40), which comprises at least one preamble symbol (41) carrying at least one preamble signalling block including signalling data, and for demapping the data blocks of said demapping output data stream (Sy′) from the payload portion (50) by use of said signalling information (Si), wherein payload data are mapped onto the payload portion (50) comprising a plurality of data symbols (52) carrying payload data of at least two mapping input data streams (S1, S2, . . . , Sp), said payload portion (50) being segmented into data segments (51) each covering a bandwidth portion of said channel bandwidth.
摘要:
An apparatus and method demapping a demapping input data stream having a channel bandwidth received in a multi-carrier broadcast system into a demapping output data stream. A stream demapping mechanism demaps second frames from the demapping input data stream, and a frame demapping mechanism demaps the second frames including a preamble portion and a payload portion into the demapping output data stream. The frame demapping mechanism demaps signalling data from the preamble portion, which includes at least one preamble symbol carrying at least one preamble signalling block including signalling data, and demaps data blocks of the demapping output data stream from the payload portion by using signalling information. Payload data are mapped onto the payload portion including plural data symbols carrying payload data of at least two mapping input data streams, the payload portion being segmented into data segments each covering a bandwidth portion of the channel bandwidth.
摘要:
A transmission apparatus and method, respectively, mapping payload data of mapping input data streams onto a mapping output data stream having a channel bandwidth for transmission in a multi-carrier broadcast system. To enable selection of robustness for transmission of data, the apparatus includes a frame forming mechanism mapping data blocks of at least two mapping input data streams onto frames of the mapping output data stream covering the channel bandwidth, each frame including a payload portion, the payload portion including plural data symbols and being segmented into data segments each covering a bandwidth portion of the channel bandwidth. The frame forming mechanism is configured to map the data blocks of the at least two mapping input data streams onto data symbols of the payload portion and includes a MIMO mode selector selecting a MIMO mode of the data blocks per data segment and/or per mapping input data stream.
摘要:
An apparatus and a corresponding method for mapping payload data of mapping input data streams onto a mapping output data stream having a channel bandwidth for transmission in a multi-carrier broadcast system includes first and second frame forming mechanisms. The first frame forming mechanism is adapted to form first frames having a first frame structure and the second frame forming mechanism is adapted to form second frames having a second frame structure. Preferably, in a second frame structure the data blocks of a particular mapping input data stream are spread in time and frequency over various data symbols and various data segments of the second frames to provide high robustness against disturbances. The payload portion of the second frame is preferably segmented into various data segments enabling use of a narrow-band receiver, even if both the first and second frames cover the same total channel bandwidth.
摘要:
A transmission apparatus and method, respectively, mapping payload data of mapping input data streams onto a mapping output data stream having a channel bandwidth for transmission in a multi-carrier broadcast system. To enable selection of robustness for transmission of data, the apparatus includes a frame forming mechanism mapping data blocks of at least two mapping input data streams onto frames of the mapping output data stream covering the channel bandwidth, each frame including a payload portion, the payload portion including plural data symbols and being segmented into data segments each covering a bandwidth portion of the channel bandwidth. The frame forming mechanism is configured to map the data blocks of the at least two mapping input data streams onto data symbols of the payload portion and includes a MIMO mode selector selecting a MIMO mode of the data blocks per data segment and/or per mapping input data stream.
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 transmitting apparatus for transmitting signals in a multi carrier system on the basis of a frame structure, each frame including at least one signalling pattern and one or more data patterns, said transmitting apparatus including frame forming means for arranging first signalling data in the at least one signalling pattern in a frame, and adapted to arrange data in the one or more data patterns in a frame, whereby the data of the one or more data patterns are arranged in data frames, each data frame comprising second signalling data and content data, transforming means for transforming the at least one signalling pattern and the one or more data patterns from the frequency domain into the time domain in order to generate a time domain transmission signal, and transmitting means for transmitting the time domain transmission signal.
摘要:
The present invention relates to a transmitting apparatus (82) for transmitting signals in a multi carrier system on the basis of a frame structure, each frame comprising at least one signalling pattern and one or more data patterns, said transmitting apparatus (82) comprising frame forming means (59) adapted to arrange first signalling data in said at least one signalling pattern in a frame, and adapted to arrange data in said one or more data patterns in a frame, whereby the data of said one or more data patterns are arranged in data frames, each data frame comprising second signalling data and content data, transforming means (60) adapted to transform said at least one signalling pattern and said one or more data patterns from the frequency domain into the time domain in order to generate a time domain transmission signal, and transmitting means (61) adapted to transmit said time domain transmission signal.The present invention further relates to a corresponding transmitting method and frame structure, as well as a receiving apparatus and method and a system and a method for transmitting and receiving signals.
摘要:
The present invention relates to a transmitting apparatus (82) for transmitting signals in a multi carrier system on the basis of a frame structure, each frame comprising at least one signalling pattern and one or more data patterns, said transmitting apparatus (82) comprising frame forming means (59) adapted to arrange first signalling data in said at least one signalling pattern in a frame, and adapted to arrange data in said one or more data patterns in a frame, whereby the data of said one or more data patterns are arranged in data frames, each data frame comprising second signalling data and content data, transforming means (60) adapted to transform said at least one signalling pattern and said one or more data patterns from the frequency domain into the time domain in order to generate a time domain transmission signal, and transmitting means (61) adapted to transmit said time domain transmission signal.The present invention further relates to a corresponding transmitting method and frame structure, as well as a receiving apparatus and method and a system and a method for transmitting and receiving signals.