Abstract:
本发明实施例提供一种译码处理方法及译码器,该方法包括:获取Turbo码生成矩阵G turbo 与循环冗余校验CRC生成矩阵G crc 的联合生成矩阵G com ,并获取Turbo码译码器输出的对数似然比值序列;釆用所述联合生成矩阵G com 和所述对数似然比值序列,进行CRC辅助的Turbo码迭代排序统计译码,获得译码处理结果。本发明实施例提供的Turbo码译码方法及设备可以提高译码性能增益。
Abstract:
A receiving system and a data processing method are disclosed. The receiving system includes a signal receiving unit, an FIC handler, a manager, and a decoding unit. The signal receiving unit receives multiple Reed-Solomon (RS) frames comprising desired mobile service data for multiple ensembles and fast information channel (FIC) data including an indicator field, wherein the indicator field indicates whether or not the desired mobile service data are delivered through the multiple ensembles. The FIC handler obtains the indicator field from the FIC data. The manager determines at least one ensemble based upon the indicator field. And, the decoding unit decodes IP streams of the desired mobile service data from the RS frame of the determined ensemble.
Abstract:
Disclosed is a method for processing a stream of a digital broadcast transmitter. The present invention comprises the steps of: an arrangement step for arranging new mobile data according to a determined mode, within a stream that includes a first region allocated for the existing mobile data and a second region allocated for normal data; a stream configuration step for configuring a stream in which base data and said new mobile data are arranged; and a transmission step for encoding and interleaving the stream to output the stream as a transport stream. Said mode may be one of a compatible mode and a non-compatible mode. Thus, the stream can be efficiently used in various modes.
Abstract:
A method and apparatus perform forward error correction in a wireless communication device in a wireless communication network. Application layer forward error correction (AL-FEC) capability information is transmitted during a capabilities exchange. A single parity check (SPC) AL-FEC code is applied on a set of k source packets to encode systematic packets for the source packets and at least one parity packet. A header of each encoded packet includes a parity packet indicator. The encoded packets are processed in a media access control (MAC) layer and a physical (PHY) layer for transmission.
Abstract:
An apparatus for receiving a digital data stream includes a demodulator that receives a digital data stream including alternating information and parity blocks. The apparatus demodulates the digital stream. An equalizer compensates for distortions in the digital data stream to generate a compensated digital data stream. A delay buffer generates a first stream of digital data representing the compensated digital data stream and a second stream of digital data representing the compensated digital data stream delayed for a predetermined period of time. A forward error correction block receives and processes the first and second streams of digital data from the delay buffer, and outputs an error corrected stream of digital data. A transport block receives and processes the error corrected stream from the forward error correction block for display.
Abstract:
A method for processing a stream of a digital broadcast receiver is provided. The method which processes a stream that is divided into a first area allocated to first mobile data and a second area allocated to normal data, includes: receiving a transport stream including new mobile data in at least a part of the second area separately from the first mobile data, demodulating the transport stream, equalizing the demodulated transport stream, and decoding at least one of the first mobile data and the new mobile data from the equalized transport stream. Accordingly, mobile data services may be provided in various ways.
Abstract:
A method for embedded encoding of at least two types of information is described. A first message and a second message are received. The types of a first encoder and a second encoder are determined. The rates of the first encoder and the second encoder are determined. A first codeword and a second codeword are generated. A mapping rule for the second codeword and a coding rule for the first codeword are determined. The second codeword is mapped into a plurality of symbols using the mapping rule. A third codeword is determined using the first codeword, the plurality of symbols, and the coding rule. The third codeword is then transmitted. The third codeword includes at least two types of information.
Abstract:
A digital broadcasting transmission system and method thereof. The digital broadcasting transmission system, comprises an RS encoder to encode a dual transport stream (TS) which includes a normal stream and a plurality of turbo streams multiplexed together, an interleaver to interleave the encoded dual TS, a turbo processor to detect the turbo streams from the interleaved dual TS and to encode the detected turbo stream, and a trellis encoder to pseudo2 (P-2) vestigial sideband (VSB) code the turbo-processed dual TS, and, then, to perform trellis encoding, and a main multiplexer (MUX) to multiplex the trellis-encoded dual TS by adding a field synchronous signal and a segment synchronous signal thereto.
Abstract:
A digital broadcasting receiving system and method, where the digital broadcasting receiving system includes: a demodulator receiving and demodulating a dual transmission stream including a turbo stream and a normal stream; an equalizer equalizing the demodulated dual transmission stream; a first processor restoring normal stream data from the equalized dual transmission stream; and a second processor restoring turbo stream data from the equalized dual transmission stream and eraser decoding the turbo stream data. Thus, the reception sensitivity of a transmission stream including a turbo stream can be improved.
Abstract:
A method and apparatus for encoding and decoding data using an overall code comprising an outer parity-check code (10) and an inner parallel concatenated convolutional, or turbo code (12). The overall code provides error probabilities that are significantly lower than can be achieved by using turbo codes alone. The output of the inner code can be punctured (22) to maintain the same code rates as the turbo code encoding without the outer code. Multiple parity-check codes (10) can be concatenated, either serially or in parallel, as outer codes. Decoding can be performed with iteractive a posteriori probability (APP) decoders (120, 122) or with other decoders, depending on the requirements of the system. The parity-check code can be applied to a subset of the bits to achieve unequal error protection. Moreover, the techniques presented can be mapped to higher order modulation schemes to achieve improved power and bandwidth efficiency.