ID 原文 译文
40316 在众多BSS算法中，主偏度分析(Principal skewness analysis，PSA)算法是近年来出现的一种以三阶统计量为目标函数的BSS算法， Among many different BSS algorithms, the principal skewness analysis(PSA)is a BSS algorithm taking third-order statistics as the objective function.
40317 其运算速度快于常规的BSS算法， One of its advantages is that its calculation speed is faster than the conventional BSS algorithms.
40318 但因其采用了串行的计算方式，在使用中存在误差累积问题。 However, because of the serial calculation method, error accumulation exists in the calculation process.
40319 针对这一问题，本文在PSA算法基础上进行改进，提出了一种并行PSA算法。 In order to solve this problem, this paper proposes an algorithm called parallel PSA.
40320 该算法以并行计算代替串行计算，可以同时估计出各个独立成分对应的方向，避免了误差累积问题。 In this algorithm, parallel calculation is used instead of serial calculation, and the corresponding directions of each independent component can be estimated simutaneously, so the problem of error accumulation is avoided.
40321 数值仿真实验表明，与PSA算法相比，并行PSA算法既保持了计算速度，同时提高了对源信号的估计准确性。 Simulation results prove that, compared with the PSA algorithm, the parallel PSA algorithm not only maintains the fast calculation speed, but also improves the estimation accuracy of each source signal.
40322 LEACH协议是无线传感器网络中分布式成簇网络协议中的经典算法。 LEACH protocol is a classical algorithm for distributed cluster networks in wireless sensor networks.
40323 但网络中的簇头能量消耗不平均、节点死亡时间出现的早等问题较为严重，本文提出了改进的基于分区和能量距离因子的LEACH-EDP协议。 But the problems such as uneven energy consumption and premature death of nodes are more serious.An improved LEACH-EDP protocol based on partition and energy-distance factor is proposed in this paper.
40324 通过提出距离修正和剩余能量修正因子来修正簇头选举阈值函数，对部署实施区域分区，针对区域进行各种增益参数权重的调整，从而延缓网络中死亡节点的第一次出现，使WSN的存活时间得到一定的延长。 The threshold function of cluster head election is optimized by residual energy and distance correction coefficient.A partitioning policy is used in the protocol.The weights of various gain parameters are adjusted according to the region.
40325 仿真实验表明，与传统LEACH协议进行对比，LEACH-EDP协议死亡节点的出现推迟了79.5%，网络死亡时间延迟了57.4%。 The simulation results show that compared with the traditional LEACH protocol, the death node of LEACH-EDP protocol was delayed by 79.5%, and the network death time was delayed by 57.4%.