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公开(公告)号：US20210357287A1
公开(公告)日：2021-11-18
申请号：US17132028
申请日：2020-12-23
发明人： Hoyoun KIM , Kijun LEE , Chanki KIM , Myungkyu LEE
摘要： A memory controller to control a memory module includes an error correction code (ECC) engine, a central processing unit to control the ECC engine and an error managing circuit. The ECC engine performs an ECC decoding on a read codeword set from the memory module to generate a first syndrome and a second syndrome in a read operation, corrects correctable error in a user data set based on the first syndrome and the second syndrome and provides the error management circuit with the second syndrome associated with the correctable error. The error managing circuit counts error addresses associated with correctable errors detected through read operations, stores second syndromes associated with the correctable errors by accumulating the second syndromes, determines attribute of the correctable errors based on the counting and the accumulated second syndromes, and determine an error management policy on a memory region associated with the correctable errors.
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公开(公告)号：US20210328711A1
公开(公告)日：2021-10-21
申请号：US17301707
申请日：2021-04-12
发明人： Shanyu ZHOU , Jelena Damnjanovic , Tao Luo , Sony Akkarakaran , Jingchao Bao
摘要： A transmitter may be configured to determine a coding rate at which to encode data packets based on a quantity of encoded packets used by a receiver for recovery of one data packet. The transmitter may be further configured to transmit a set of encoded packets generated at the coding rate to the receiver. The receiver may be configured to receive, from the transmitter, encoded packets carrying a set of data packets encoded at a coding rate. The receiver may be further configured to transmit, to the transmitter, feedback indicating a quantity of a set of the encoded packets used for recovery of one data packet of the set of data packets. The receiver may be further configured to receive, from the transmitter, other encoded packets carrying another set of data packets encoded at another coding rate.
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公开(公告)号：US11146361B2
公开(公告)日：2021-10-12
申请号：US16851677
申请日：2020-04-17
发明人： Sung-Hee Hwang
IPC分类号： H04L1/00 , H03M13/27 , H03M13/29 , H03M13/35 , H04L12/26 , H04L29/06 , H03M13/11 , H03M13/15 , H03M13/23
摘要： A method for sending forward error correction (FEC) configuration information by a sending apparatus in a multimedia system is provided. The method includes sending source FEC configuration information for an FEC source packet to a receiving apparatus, wherein the source FEC configuration information includes information related to an FEC source or repair packet that is sent first among at least one FEC source or repair packet if an FEC source or repair packet block includes the at least one FEC source or repair packet.
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公开(公告)号：US11146292B2
公开(公告)日：2021-10-12
申请号：US16722294
申请日：2019-12-20
发明人： Cheolsun Park , Chiho Lee , Unseob Jeong , Dongyeong Kim , Junghwan Song , Dongweon Yoon
摘要： A data decoder includes a communication unit receiving a bit signal with encoded data; a first operation unit that bit shifts the bit signal by a first length, corresponding to a length of a spreading code used to encode the data, to generate a first operation stream; a second operation unit generating a second operation stream without the spreading code; a third operation unit that bit shifts the second operation stream by a second length to generate a third operation stream; a fourth operation unit generating a fourth operation stream from which the data is removed using the second operation stream and the third operation stream; and a polynomial generator that decodes the encoded data using the fourth operation stream.
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公开(公告)号：US11139917B2
公开(公告)日：2021-10-05
申请号：US16580961
申请日：2019-09-24
发明人： Liang Ma , Xin Zeng , Carmela Cozzo , Yuejun Wei
摘要： A communication method is provided, including: obtaining a to-be-segmented first bit sequence, where a quantity of bits in the first bit sequence is B, and a quantity of bits that can be carried by a physical resource corresponding to the first bit sequence is N1; determining, based on N1 and a parameter L, a quantity C of bit sequences obtained by segmenting the first bit sequence, where a value of L is equal to (B+B1)/Rmin,Kmax, Rmin,Kmax is a minimum bit rate corresponding to an available maximum code block length Kmax, and B1 is an integer greater than or equal to 0; and segmenting the first bit sequence into C segmented bit sequences. Based on the method, a proper code block segmentation scheme can be provided.
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公开(公告)号：US11133830B2
公开(公告)日：2021-09-28
申请号：US16447220
申请日：2019-06-20
摘要： A transmitting apparatus is provided. The transmitting apparatus includes: an encoder configured to perform a low-density parity check (LDPC) encoding on input bits using a parity check matrix to generate an LDPC codeword comprising information word bits and parity bits; an interleaver configured to interleave the LDPC codeword; and a modulator configured to map the interleaved LDPC codeword onto a modulation symbol, wherein the modulator is further configured to map a bit included in a predetermined bit group from among a plurality of bit groups constituting the LDPC codeword onto a predetermined bit of the modulation symbol.
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公开(公告)号：US20210294402A1
公开(公告)日：2021-09-23
申请号：US17340245
申请日：2021-06-07
摘要： In one embodiment, a method includes applying Forward Error Correction (FEC) to data at power sourcing equipment, transmitting the data and pulse power over a wire pair to a powered device, identifying data transmitted during power transitions between a pulse power on time and a pulse power off time in the pulse power at the powered device, and applying FEC decoding to at least a portion of the data based on said identified power transitions.
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公开(公告)号：US20210288665A1
公开(公告)日：2021-09-16
申请号：US17322541
申请日：2021-05-17
发明人： Yutaka MURAKAMI , Shutai OKAMURA
摘要： Disclosed are an encoder, a transmission device, and an encoding method with which the transmission amount is reduced and a deterioration in transmission efficiency is suppressed while improving reception quality when QC-LDPC or a like block encoding is used. A puncture pattern setting unit (620) searches for a puncture pattern for each integral multiple of the number of columns or for each divisor of the number of columns of a sub block matrix that forms a check matrix (H) of a QC-LDPC code, and a puncture unit (data reduction unit) (630) switches the puncture pattern for each integral multiple of the number of columns or for each divisor of the number of columns of the sub block matrix that forms the check matrix of the QC-LDPC code.
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公开(公告)号：US20210286674A1
公开(公告)日：2021-09-16
申请号：US17332448
申请日：2021-05-27
申请人： SK hynix Inc.
发明人： Won Gyu SHIN , Jung Hyun KWON , Jin Woong SUH , Do Sun HONG
摘要： An error correction method may include performing a first error correction code (ECC) decoding operation of read data outputted from a memory medium and storing the read data outputted from the memory medium into a loop-buffer, in a first operation mode, and performing a second ECC decoding operation of the read data stored in the loop-buffer may be performed in a second operation mode.
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公开(公告)号：US11122407B1
公开(公告)日：2021-09-14
申请号：US17238374
申请日：2021-04-23
发明人： Abdulah Aljohani , Waleed Alasmary
摘要： A LoRa device for communicating sensor signals in a low power wide area network (LPWAN) includes a physical layer using Hamming encoding and Gray indexing with chirp spread signal (CSS) modulation to encode and modulate the sensor signals and a medium access layer (MAC) including a compressive sensing sub-layer which reduces encoded, modulated signals to sparse vectors. A transmission packet is formed by combining the sparse vectors with a selected set of sparse vectors representing past measurements and the incoming velocity of the sensor signals. A receiver decompresses the transmission packet by reconstructing, at a sparse recovery sub-layer of a receiver MAC layer, the encoded, modulated sensor signals. A decoder path removes the CSS modulation and Gray indexing, and Hamming decodes the sensors signals.
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