Apparatus and methods for rate matching in polar coding

    公开(公告)号:US10666392B2

    公开(公告)日:2020-05-26

    申请号:US15939750

    申请日:2018-03-29

    Abstract: Disabled input bit positions of an input bit vector that is to be encoded are determined based on non-contiguous subsets of consecutive coded bit positions that are to be punctured from a codeword of a polar code. The input bit vector is encoded according to the polar code to generate a codeword, by applying information bits to input bit positions of the input bit vector other than the disabled input bit positions. The non-contiguous subsets of consecutive coded bit positions are punctured from the codeword to generate a punctured codeword, and the punctured codeword is transmitted. In some embodiments, the non-contiguous subsets include a first subset that includes a first coded bit position and a second subset that includes a last coded bit position. The polar code could be a chained polar code, for example.

    Apparatus and methods for training-based channel code design

    公开(公告)号:US10560221B2

    公开(公告)日:2020-02-11

    申请号:US15852174

    申请日:2017-12-22

    Abstract: One or more codewords are generated by encoding input bits at input bit positions onto sub-channels that are provided by a code. Each of the sub-channels has an associated reliability of correct decoding of an input bit at an input bit position. Each codeword is transmitted to a decoder, and a word based on each transmitted codeword is received at the decoder. Each received word is decoded, and the reliabilities of the sub-channels are determined based on decoded bits and known input bits from which each codeword was generated. An indication that is based on the determined reliabilities of the sub-channels, such as an indication of the determined reliabilities, is transmitted to the encoder, and may be used by the encoder in selecting the sub-channels for encoding subsequent input bits, for example.

    Apparatus and methods for decoding assistant bit-based polar code construction

    公开(公告)号:US10560218B2

    公开(公告)日:2020-02-11

    申请号:US15852537

    申请日:2017-12-22

    Abstract: An assistant sub-channel to carry a decoding assistant bit, in input bits that are to be encoded, is selected from each of a plurality of non-adjacent segments. Each segment includes a subset of sub-channels with associated reliabilities. Some embodiments also involve grouping the sub-channels into the segments. After a target number of assistant sub-channels have been selected, the input bits are encoded to generate a codeword, and the codeword is transmitted. Assistant sub-channel selection could involve iterations to select assistant sub-channels at each iteration, until at least the target number of assistant sub-channels have been selected.

    CHANNEL STATE INFORMATION REPORTING METHOD AND COMMUNICATIONS APPARATUS

    公开(公告)号:US20190372704A1

    公开(公告)日:2019-12-05

    申请号:US16540086

    申请日:2019-08-14

    Abstract: The application provides manner for communicating channel state information (CSI) in a communication network. A preset length is used for equalizing lengths of CSI to be reported. The preset length is determined based on a quantity of CSI-reference signal (RS) ports. A communication device determines whether a total length of one or more indication information items to be included in the CSI is less than the preset length. If the total length of the one or more indication information items to be included in the CSI is less than the preset length, the communication device adds one or more padding bits, to obtain a CSI bit sequence including the one or more indication information items and the one or more padding bits. A total length of the CSI bit sequence is consistent with the preset length. The communication device then outputs the CSI bit sequence.

    Method and Device for Incremental Redundancy Hybrid Automatic Repeat Request (IR-HARQ) Re-Transmission

    公开(公告)号:US20180115393A1

    公开(公告)日:2018-04-26

    申请号:US15784836

    申请日:2017-10-16

    Abstract: Aspects of this disclosure provide a technique for implementing polar encoding with incremental redundancy HARQ re-transmission. In particular, a transmitter may encode a message using different polar codes to obtain a first codeword and a second codeword that is twice the length of the first codeword, and transmit the first codeword as an original transmission, and the second half of the second codeword as a re-transmission without transmitting the first half of the second codeword. Information bits that are common to both the first codeword and the second half of the second codeword may be mapped to more-reliable bit-locations in the second half of the second codeword. Decoded bit values for the common information in the original transmission and retransmission may be compared by the receiver to perform a parity check.

    System and method for an asynchronous processor with scheduled token passing
    69.
    发明授权
    System and method for an asynchronous processor with scheduled token passing 有权
    具有计划令牌传递的异步处理器的系统和方法

    公开(公告)号:US09325520B2

    公开(公告)日:2016-04-26

    申请号:US14325117

    申请日:2014-07-07

    CPC classification number: H04L12/433 G06F9/3871 G06F15/16

    Abstract: Embodiments are provided for adding a token jump logic to an asynchronous processor with token passing. The token jump logic allows token forward jumps and token backward jumps over a cascade of token processing logics in the processor. An embodiment method includes determining, using a token jump logic coupled to a cascade of token processing logics, whether to administer a token forward jump or a token backward jump of a token signal passing through the token processing logics. The token forward jump and token backward jump allow the token signal to skip one or more token processing logics in the cascade. The method further includes monitoring, for each of the token processing logics, a polarity status of a token sense logic, and inverting the polarity status according to the determination at the token jump logic.

    Abstract translation: 提供了实施例,用令牌传递将令牌跳转逻辑添加到异步处理器。 令牌跳转逻辑允许在处理器中的令牌处理逻辑级联的令牌向前跳跃和令牌向后跳转。 实施例方法包括使用耦合到令牌处理逻辑的级联的令牌跳转逻辑来确定是否管理通过令牌处理逻辑的令牌信号的令牌前向跳转或令牌反向跳转。 令牌向前跳转和令牌反向跳转允许令牌信号跳过级联中的一个或多个令牌处理逻辑。 该方法还包括针对令牌处理逻辑中的每一个监视令牌检测逻辑的极性状态,以及根据令牌跳转逻辑处的确定来反转极性状态。

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