Abstract:
A method and a network node device for performing the method for Cyclic Redundancy Check (CRC) error location detection in a first network node configured for cut-through switching. The method comprises detecting a CRC error in a first frame received from a source network node. The method further comprises adding a Medium Access Control (MAC) address of the first network node to the first frame in response to detecting the CRC error, and forwarding the first frame to a second network node.
Abstract:
Methods, systems and computer-readable media for optimizing SerDes system parameters based on a bit error rate detected by a forward error correction unit (FEC). A SerDes receiver receives a data stream over a link and uses a (FEC) to detect error information in the received data stream. The system tunes and optimizes one or more SerDes system parameters using the detected error information. The system minimizes power consumption by decreasing power supply voltage until a maximum acceptable input error rate threshold is reached. The (FEC) allows the system to tolerate errors in the input data stream up to the threshold while preventing propagation of these errors in the (FEC) output data stream.
Abstract:
A method and computer program performed by a system and a system (60) for communication between electronic control units (ECU's ) in an in-vehicle communi-cations network (50), the method comprising determining (S100) data for transmis-sion from a first electronic control unit (100), encoding (S110) data by means of an encoding unit (120), the encoding unit (120) comprised in the first electronic con-trol unit (100), interleaving (S120) the encoded data by means of an interleaving unit (130), the interleaving unit comprised in the first electronic control unit (100), transmitting (S130) the interleaved encoded data by means of a transmission in-terface (140), the transmission interface (140) comprised in the first electronic con-trol unit (100), receiving (S140) the interleaved encoded data by means of a recep-tion interface (150), the reception interface (150) comprised in a second electronic control unit (110), de-interleaving (S150) the interleaved encoded data by means of a de-interleaving unit (160), the de-interleaving unit (160) comprised in the sec-ond electronic control unit (110), decoding (S160) the encoded data by means of a decoding unit (170), the decoding unit (170) comprised by the second electronic control unit (110), providing (S170) the data at the disposition of the second elec-tronic control unit (110).
Abstract:
A device includes a plurality of components, including multiple components configured as radio access technology (RAT). A target component of the plurality of components has first and second interfaces coupling the target component to respective first and second other ones of the plurality of components. The device includes a computing platform having a data processing element coupled to the target component. An interface module has compiled program code configured to be executed by the data processing element to cause the processing element to provide at least one black box interface describing and implementing the first and second interfaces. A controller is coupled to the computing platform and the multiple radio components and is configured to substitute data provided according to the at least one black box interface for respective data provided via the first and second interfaces to the first and second other radio components, respectively.
Abstract:
Embodiments described herein provide a system for dynamically selecting a pre-processing scheme for an LDPC decoder (106). The system includes a receiver configured to detect transmission of a first data packet and receive a first set of data bits corresponding to a first portion of the first data packet. The system further includes a histogram generator (103) configured to calculate log-likelihood ratios for each data bit from the first set of data bits, and generate a histogram based on the calculated log-likelihood ratios. The receiver is configured to continue receiving a second set of data bits corresponding to a second portion of the first data packet. The system further includes a selector (104) configured to activate or inactivate a log-likelihood ratio pre-processing scheme (105) on the received second set of data bits based on characteristics of the histogram.
Abstract:
The invention relates to a method and decoding device for receiving an input bit-stream comprising a sequence of n-bit pattern symbols as well as a unique n-bit comma symbol for synchronization, and for generating therefrom a synchronized output comprising a sequence of m-bit pattern words, with m
Abstract:
L'invention concerne un procédé de relayage mis en œuvre par un relais half-duplex destiné à un système de télécommunication comprenant plusieurs sources, le relais et un destinataire. Le procédé (1) comprend : un paramétrage d'ensembles L R,b de sources indexés par le temps b , - une définition de règles logiques C b ( L R,b , S R,b , S D,b ), b = 1,..., B -1 qui conduisent à la détermination d'une sélection de messages de sources décodées sans erreur avec lesquelles le relais coopère, une phase (2) de réception comprenant : o la réception de mots de code émis par les sources, cette phase comprenant une étape de décodage pour estimer par source à partir de mots de code reçus un message u S,t associé aux mots de code ( c s ) émis par la source, o la détection d'erreur et la décision (3) par le relais des messages décodés sans erreur, les messages décodés sans erreur déterminant l'ensemble S R,b des sources décodées sans erreur par le relais, - une phase (4) de codage et de transmission vers le destinataire d'un signal représentatif uniquement de la sélection des messages, la phase de réception étant telle que, après chaque réception d'un bloc ( c (b)/ s,t ) des différentes sources, le relais réceptionne et décode une voie de retour provenant de la destination indiquant ( S D,b ) si aucun ou au moins un message est décodé sans erreur, ces messages décodés sans erreur par la destination déterminant l'ensemble S D,b de sources décodées sans erreur par la destination et le procédé étant tel que le relais bascule de la phase de réception à la phase de codage et de transmission uniquement dès qu'une des règles logiques C i est valide.
Abstract translation:
本发明涉及一种方法 由半双工中继destinà实现的中继中继 &Agrave; 一个包括几个来源的电信系统,中继和一个接收者。 d&oacute的过程; (1)包括:由时间索引的一组源,其中, / i> - 逻辑重置的定义C b> sub> sub> sub> I> R b i>的子> 取值 i>的<子>的 R b i>的子> 取值 I> <子 > D,b),b = 1,...,B-1,其导致&agrave; 确定来自与所述中继器协作的无错编码源的消息的选择,接收阶段(2)包括:码字接收; 这个阶段包括一个解码步骤,通过来源进行估计。 从代码字中接收到消息u S,t sub> associate&oacute; 由源放置的码字( c i> sub>),错误检测和决定 3)通过中继无错误的编码消息,无错误地消息定义了集合S ,b i (4)编码和传输给仅表示消息选择的信号的接收者,相位 以便在接收到一个块(c(b)/ ,t sub>)之后, >),中继站接收并解码来自目的地的返回信道,指示(S ,b D> 如果否,或者至少一个消息被解码 没有错误,这些消息Dé鳕鱼&eacute; S无误差由目的地Dé结尾的所有的取值 i>的<子>的 d B'/ I> 子>源Dé 编码没有错误的目的地和程序d&oacute; 使得继电器从接收阶段切换到下一阶段。 只有当其中一个逻辑 sub> sub>寄存器是编码和传输阶段时 有效的。 p>
Abstract:
The disclosure relates to a device (200) for adjusting a size for transmissions of encoded symbols over a communication link in case of decoding failures, the device (200) comprising: a Soft-Input-Soft-Output (SISO) decoder (201) configured to decode input information (L in (l) , 202) derived from a transmission of encoded symbols (r (l) ) over a communication link to obtain output information (L out (l) , 204); a failure detector (203) configured to detect a decoding failure (206) of the SISO decoder (201 ) based on an evaluation of the output information (L out (l) , 204); and a processor (205) configured to adjust a size (N', 208) for a next transmission of encoded symbols (r (l+1) ) based on a functional relation of an average bit-wise entropy ( H ) of the output information (L out (l) , 204) normalized with respect to the input information (L in (l) , 202) in case of a decoding failure (206).
Abstract:
A receiver is provided. The receiver includes: a first decoder configured to decode a superposition-coded signal by using a parity check matrix to generate Low Density Parity Check (LDPC) information word bits and first parity bits corresponding to a first layer signal; an encoder configured to encode the LDPC information word bits and the first parity bits to generate second parity bits, or encode the LDPC information word bits to generate the first parity bits and the second parity bits, by using the parity check matrix; and a second decoder configured to decode a signal which is generated by removing the first layer signal, corresponding to the LDPC information word bits, the first parity bits, and the second parity bits, from the superposition-coded signal, to reconstruct bits transmitted through the second layer signal.
Abstract:
Various embodiments are described of a system and method for improved SCL decoder operation. In particular, various embodiments are described which improve the efficiency of the buffer management based on updated path metric statistics. In some embodiments, the SCL decoder may perform selective replacement to limit the extent of LLR updates per row only to the statistics that have changed since the previous update cycle. In some embodiments, the SCL decoder may perform deferred updates, which may involves in-place calculation of both û φ = 0 and û φ = 1 bit estimate (LLR) updates based on the row from which the updated row will be derived.