释义 |
MPSKBNC²³⁶²¹³⁺¹ 基本例句 多进制相移键控¹⁰⁰ A modulation identification of MPSK signals was provided, which is based on WT zero-crossing feature. 提出了基于小波变换过零特征的 MPSK信号调制类型识别方法。 cnki A novel algorithm based on the cosine window transformCWT is proposed to estimate the symbol rate for the usual signals, MPSK and QAM in communication. 针对数字通信中常见的 MPSK、 QAM信号,提出了一种基于余弦窗变换的码速率估计新算法。 cnki An iterative decoding algorithm for the LDPC- OFDM systems with MQAM/ MPSK is proposed in this paper. 为了把 LDPC应用于 OFDM系统上,提出了多电平调制下的 LDPC译码的算法。 cnki In the SPM method the composite hypothesis test is performed by means of the monotonic characteristic of the even order statistical phase moments of MPSK signals. 相位统计矩方法利用 MPSK信号符号初相位偶阶统计矩为M的单调递增函数的特性,并进行 M进制识别复合假设检验。 cnki The nonlinear energy operator to the MPSK signals is extended to estimate its symbol rate. 针对 MPSK通信信号的符号率估计问题进行了研究。 cnki The methods to estimate the carrier frequency of MPSK signals are researched. 研究了 MPSK信号载波频率的估计方法,采用三种算法进行载频估计。 cnki WT zero-crossing feature of MPSK signal was present in the time- scale spectrum of wavelet coefficients. 给出了 MPSK信号小波变换后在时间-尺度图谱上小波系数的过零特征。 dictall A new method for digital identification and demodulation of MPSK signals is presented under the condition of the Doppler frequency shift of channel attenuation. 针对衰落信道中广泛存在的多普勒频移现象,本文提出了一种 MPSK信号数字化识别解调的方法。 cnki And then, the algorithm based on the interpolation of MPSK symbol synchronization, as well as the hardware implementation of the modules is introduced. 接着,介绍了基于内插的 MPSK信号符号同步的算法,以及各模块的硬件实现。 cnki Combined WT and clustering, we get a new modulation classification algorithm for MPSK/ MQAM signals. 结合小波变换和聚类,构造出一种新的 MPSK与 MQAM数字调制信号的调制模式识别算法。 fabiao For MPSK signals, the signal-to-noise ratio SNR estimation can be directly transformed into the signal module estimation. 对于 MPSK信号而言,信噪比的估计可以直接转化成对信号模的估计问题。 cnki In this paper, phase variation value is defined with help of calculating error energy of adjacent code cells of MPSK signal, so that recognition of MPSK signal phase encoding rule can be realized. 本文通过计算多相编码信号 MPSK相邻码元间的误差能量的方法来确定相位突变值,从而达到对 MPSK信号相位编码规律的识别。 cnki Simulation results prove that this method had a good performance and can apply to the demodulation of MPSK burst signal. 计算机仿真表明,该方法具有良好的性能,适用于对 MPSK突发信号的解调。 cnki This thesis deals with the algorithms of carrier frequency offset and phase error for MPSK signal. 本文主要研究 MPSK信号的载波频偏和相位误差的估计和恢复算法。 fabiao |