Abstract:
A receiving system and a method of processing broadcast signal. The receiving system includes a signal receiving unit, an equalizer, a turbo decoder, a demultiplexer, first and second error correctors, and a block interleaver. The signal receiving unit receives a broadcast signal, the broadcast signal comprising a data group, which includes mobile service data, a plurality of known data sequences, and signaling data, and demodulating the received broadcast signal. The equalizer channel-equalizes the data group using at least one of the plurality of known data sequences. The turbo decoder turbo-decodes the signaling data contained in the channel-equalized data group. The demultiplexer distinguishes transmission parameter channel (TPC) data and fast information channel (FIC) data from the turbo-decoded signaling data. The first error corrector corrects an error in the TPC data. The block deinterleaver block-deinterleaves the FIC data. The second error corrector corrects an error in the block-deinterleaved FIC data.
Abstract:
The disclosure describes transferring at least one data packet in a network from at least one server to a client through a point of interconnection. The point of interconnection executes a process of: receiving from the client at least one configuration map specifying at least one error correction mechanism, receiving from the server the at least one packet, detecting errors included in the at least one packet, and if the at least one packet includes at least one error, applying to the at least one packet at least one error correction mechanism specified in the at least one configuration map.
Abstract:
A destination node in a data network for transmission of real-time data by a data telegram, the data telegram including an identification, data and a transfer status, is provided. The destination node includes a device for receiving a first data telegram, a device for storing the data of the first data telegram and an assigned timer value, a device for receiving a second data telegram and a device for replacing the stored data of the first data telegram, wherein the stored data of the first data telegram is replaced with data of the second data telegram. Further, a method and a non-transitory storage medium are provided.
Abstract:
A receiving system and a method of processing broadcast signals in the receiving system are disclosed. The receiving system includes a tuner, a known sequence detector, a carrier recovery unit, a baseband processor, and a channel equalizer. The tuner receives a broadcast signal of a passband including a data group. Herein, the data group comprises mobile service data, a plurality of known data sequences, and signaling data. The known sequence detector estimates an initial frequency offset and detects a position of each known data sequence based on the known data sequence having the first data pattern. The carrier recovery unit acquires an initial frequency synchronization using the initial frequency offset estimated by the known sequence detector and estimates a residual frequency offset based upon the known data sequences having the second data pattern so as to perform carrier recovery. The baseband processor performs complex multiplication between the received broadcast signal and an output of the carrier recovery unit, thereby converting the passband broadcast signal to a baseband broadcast signal.
Abstract:
A method and device for indicating an uncorrectable data block. The method includes: if a forward error correction decoding fails, setting synchronization character of at least one of the corresponding data blocks to a first character; and performing line decoding on the data block with the set first character, and outputting decoded data. With the invention, indicating the uncorrectable data block Simple and effective to a line decoding module can be implemented in case of a failure of FEC decoding.
Abstract:
The present invention provides a system, apparatus and method for accurately identifying optical or digital impairments on a span using FEC errors identified at an intermediary node. This information may be provided to an end node within a network to switch to a redundant path around the impaired optical path or span therein. In one embodiment of the invention, signal degradation is identified by analyzing FEC data within a FEC decoded signal at an intermediary node. An identification of signal degradation provides an indication of a potential failing span within an optical link, which may be provided in-band or out-of-band to a terminal node so that a signal may be switched around a failing path, or span therein, prior to an actual failure event.
Abstract:
An apparatus and method for processing data in a receiver used in a wireless communication system is provided. The data processing method uses the receiver apparatus comprising a medium access control (MAC) layer and a radio link control (RLC) layer for processing data units. The data processing comprises communicating a data unit and a cyclic redundancy code (CRC) check result associated with the data unit from the MAC layer to the RLC layer; examining in the RLC layer that the CRC check result sent from the MAC layer that indicates whether the data unit has an error; and discarding the data unit when the data unit has error and when an error handling scheme is not provided.
Abstract:
A first device receives first data that includes a plurality of input vectors, which includes a primary input vector and a set of secondary input vectors and detects uncorrectable errors in the first data based on a quality metric indication. Based on detecting the uncorrectable errors in the first data, the first device substitutes a predetermined codeword for the primary input vector encoded using a non-perfect code, and substitutes a predetermined input vector for the primary input vector. The first device modulates a set of encoded secondary input vectors using the predetermined input vector to generate a modulated set of encoded secondary input vectors and transmits as second data the predetermined codeword and the modulated set of encoded secondary input vectors to a target device, wherein the substituting step creates a first number of errors that is detected by the target device as uncorrectable errors in the transmitted second data.
Abstract:
A system enables efficient flow control in computer network. In the preferred embodiment, when an entity detects an impending full condition, it cuts short its transmission of the current frame that is being sent, and immediately sends a pause signal. The entity also deliberately corrupts the error detection signature of the cut-off frame to ensure that whatever portion of it that may have been sent is discarded. After sending the pause signal, the entity re-sends the cut-off frame in its entirety. Upon receiving a pause signal, the receiving entity cuts short the current frame being transmitted to the entity that sent the pause signal. The receiving entity also corrupts the correction value of this cut-off frame. The receiving entity suspends its transmission of frames to the entity that sent the pause signal for a period of time. When the pause period expires, the receiving entity re-sends the cut-off frame in its entirety, and resumes the transmission of frames.
Abstract:
An information radio transmission system is provided that enables provision of correct control information on the transmitting side irrespective of the error volume when an error occurs in communication data. Error volume measuring data string storage units that store an error volume measuring data string are provided in both a transmitting-side communication device that transmits data by radio transmission and a receiving-side communication device that receives data transmitted from the transmitting-side communication device. The receiving-side communication device has an error volume measuring unit that measures the error volume when transmitting data. An error volume measuring data string is added to data and the data is transmitted from the transmitting-side communication device. Having received this, in the receiving-side communication device, the error volume measuring unit compares the error volume measuring data transmitted from the transmitting-side communication device with an error volume measuring data string stored in an error volume measuring data string storage unit of the receiving-side communication device, thereby measuring the error volume.