ID 原文 译文
22985 实验结果表明，该文算法比现有方法具有更高的 QoS 类识别准确性。 Experiment results show that the proposed recognition method can achieve more accurate QoS class recognition than previous methods.
22986 对于双向多输入多输出(MIMO)中继系统，如何在减少中继负担的情况下获得精确的信道状态信息(CSI)成为信道估计的一个难点。 For two-way Multiple-Input Multiple-Output (MIMO) relay communication systems, the main challenge is to get full knowledge of all channel matrices with minimal cost of signal handling at the relay node.
22987 该文针对双向 MIMO 中继系统，提出一种低复杂度的联合信道估计方法。 In this paper, a low-complexity joint channel estimation scheme for two-way MIMO relay communication systems is proposed.
22988 所提方法在两个用户端同时发送正交信道训练信号至中继，中继采用所设计的放大因子放大所接收的信号并转发至两个用户。 Both users transmit orthogonal channel training signals to the relay node simultaneously. Then the relay amplifies the received signals by using designed amplification factors, and forwards the amplified signals to both users.
22989 每个用户对所接收的信号构造平行因子(PARAFAC)模型，并根据实际系统要求，分别设计了迭代和非迭代的两种拟合算法对 PARAFAC 模型进行拟合，从而联合估计出所有信道的 CSI。 The received signals at each user is formulated as a PARAllel FACtor (PARAFAC) model, and then the iterative and non-iterative fitting algorithms are derived to estimate the Channel State Information (CSI) knowledge of all links involved.
22990 与已有信道估计方法相比，所提方法设计灵活，采用的拟合算法具有较低的复杂度，而且在使用较少信道训练信号的情况下具有较高的信道估计精度。 Compared with existing schemes, the proposed scheme has the advantages of design flexibility and low complexity, and has higher estimation accuracy with a few number of channel training signals.
22991 因受电离层调制影响，传统的高频海杂波模型难以全面描述天波超视距雷达海杂波的空域非均匀性和时域非平稳性。 As modulated by the ionosphere, the classical High-Frequency (HF) model of ocean clutter can not describe the HF scatterings from sea surface approvingly in view of skywave Over-The-Horizon Radar (OTHR).
22992 该文首先基于传统的 Walsh  高频海杂波模型分析了洋流的影响，提出电离层子反射面模型的概念，揭示了相干处理间隔内电离层对高频信号频谱的调制机理； In this paper, ocean current is taken into consideration based on the Walsh HF sea clutter model.
22993 然后通过建立电离层等效反射面，并将其分解为多个子反射面的方式，给出可以综合反映不同海态、不同电离层状态的天波超视距雷达海杂波修正模型。 An equivalent ionospheric reflecting screen model is established which can be resolved into several sub screens, based on which the ionospheric modulation on frequency is discussed. Incorporating with Walsh model, a normalized sea clutter model for skywave OTHR is presented.
22994 最后结合数学描述，利用该文修正模型反演分析了由电离层的空域非均匀、时域非平稳引起的典型高频海杂波多普勒偏移、展宽、分裂和多径复杂现象的实测数据多普勒谱，仿真与实测数据多普勒谱验证了所提修正模型的准确性与鲁棒性。 Using the presented model, the spectrums in different cases involving Doppler shift, spectrum broadening, splitting and multipath propagation are simulated, and comparing with the measured data, the model's validity and robustness are verified.