ID 原文 译文
17345 该文研究一类易于硬件实现的低秩循环矩阵。 A class of low-rank circulant matrices with easy hardware implementation is studied.
17346 首先将循环矩阵转换为位置集合，并基于同构理论简化了位置集合的搜索空间，从而基于比特移位方法提出了循环矩阵的构造方法。 Circulant matrices are first converted into position sets, the search space of position sets is pruned based onisomorphism theory, and then construction of circulant matrices is proposed based on the bit shift method.
17347 考虑非零域元素的列赋值与矩阵秩之间的关系，选取Tanner图中没有长度为4的环的循环矩阵，基于非零域元素的列赋值思想提出了不同阶数、不同码率的多元LDPC码构造方法。 Considering the relationship between the column assignment of non-zero field elements and the matrix rank,circulant matrices whose Tanner graphs have no cycles of length 4 are chosen, and according to the columnassignment of non-zero field elements, construction of nonbinary LDPC codes over various finite fields and withdifferent code rates is presented.
17348 数值仿真结果表明，与基于PEG算法构造的二元LDPC码比较，所构造的多元LDPC码在BPSK调制方式下在误码字率10–5附近有0.9 dB的增益；在与高阶调制相结合时，有更大的性能提升。 Numerical simulation results show that, compared with binary LDPC codes constructed based on the PEG algorithm, the proposed nonbinary LDPC codes have 0.9 dB gain at Word ErrorRate (WER) of 10-5 when the modulation is BPSK, and the performance gap becomes large by combining with high order modulations.
17349 此外，所构造的多元LDPC码在迭代5次与50次下的性能几乎一致，这为低时延高可靠通信提供了一种有效的候选编码方案。 Furthermore, the performance gap of the proposed codes between 5 iterations and 50iterations is negligible, and it provides a promising coding scheme for low-latency and high-reliability communications.
17350 随着移动通信应用场景的持续增多，非平稳信道成为越来越常见的传输环境，而非平稳信道下的可靠传输依赖于准确的信道估计。 With the continuous increase of possible usage scenarios of mobile networks, non-stationary channels become more and more common transmission environments, and reliable transmission over non-stationary channels relies on accurate channel estimation.
17351 基于信源编码中用于信源参数估计和信源相关性估计的滑窗置信传播(SWBP)算法，该文提出一种非平稳信道下LDPC码的联合信道估计与译码(JCED)算法； Based on the Sliding-Window Belief-Propagation (SWBP)algorithm used to cope with source parameter estimation and source correlation estimation, a Joint Channel Estimation and Decoding (JCED) algorithm for LDPC codes over non-stationary channels is proposed.
17352 同时，分别基于交叉熵和离散傅里叶变换提出两种在每轮JCED迭代中自适应设置滑窗长度的快速算法。 Two fast algorithms to set adaptively the window size in each JCED iteration are also proposed based on cross entropy and Discrete Fourier Transform (DFT), respectively.
17353 仿真结果表明，在无导频辅助的前提下，所提算法具有接近理想信道估计下置信传播译码的性能以及高效率、低复杂度、强鲁棒性和不导致错误平层等优点。 Simulation results reveal that, without the aid ofpilots, the performance of the proposed algorithm approaches that of Belief-Propagation (BP) decoding underideal channel estimation, and has the advantages of high efficiency, low complexity, strong robustness and notincurring error-floor.
17354 近年来，以物联网(IoT)为基础的6G的相关技术研究引起了研究单位、高校和工业界的广泛关注，其中还有一些重要的问题亟待解决。 Recently 6G based on Internet of Things (IoT) is attracted much attention from research units,universities and industries. There are some important problems leaved for us to resolve.