符号差

得到一般运输问题有最优符号差的一个充分条件。

We obtain a sufficient condition which the general transportation problems have optimal signature .

基于多符号差分相关的CPM非相干解调算法

Non-coherent demodulation of continuous phase modulation signals based on multi-symbol differential correlation

该方案利用了多符号差分检测和CPM信号特有的相位特性，反馈地修正同步误差。

The proposed scheme takes the advantage of phase information obtained by " Multiple Differential Detection " and the direct proportion between phase error and timing deviation to correct the deviation of timing .

采用多符号差分检测（MSDD）能够缩小差分检测与相干检测之间的性能差距。

Multiple-symbol differential detection ( MSDD ) can narrow the performance gaps between differential detection and coherent detection .

该算法以与观测窗口长度成平方关系的计算复杂度获得了ML检测性能，并提供了基于球形译码的多符号差分检测（MSDD）算法框架。

The algorithm accomplishes ML detection with a complexity square in the length of observation window , and provides a framework to the design of multiple symbol differential detection ( MSDD ) based on SD .

为了解决连续相位调制（CPM）信号在某些突发传输条件下或信道快速变化情况下的解调难题，研究了基于多符号差分相关的非相干维特比（Viterbi）解调算法。

In order to deal with the problem of the demodulation of continuous phase modulation ( CPM ) signals in some special cases , the performance and implementability of non-coherent Viterbi algorithm based on multi-symbol differential correlation was investigated .

空时分组码的差分检测和多符号差分检测

Differential Detections Method of Space-time Block Codes Multiple-symbol Differentia Detection of Space-time Block Codes

符号差类运输问题的多项式时间算法

Polynomial time Algorithm for Signature Class Transportation Problem

空间相关连续衰落信道下对角酉空时星座的最大似然多符号差分检测算法

Maximum-Likelihood Multiple Symbol Differential Detection for Unitary Space-Time Modulation in continuous fading with spatial correlation

本文详细的研究了差分调制信号的多符号差分检测。

The thesis presents a detailed analysis on the decision metric of Multiple-Symbol Differential Detection ( MSDD ) of differentially modulated signal .

有限酉群作用下子空间轨道按和生成的格空间相关信道下酉空时系统的最大似然多符号差分检测算法

Lattices Generated by Joins of Elements in Orbits of Subspaces under Finite Unitary Groups Maximum-Likelihood Multiple Symbol Differential Detection for Unitary Space-Time Modulation in Spatial Correlated Channels

提出了一种改进的判决反馈多符号差分检测算法，改善了当接收符号数较少时的差分检测性能。

A modified decision-feedback MSDD is proposed in the dissertation , which can improve the performance of MSDD especially when the number of receiving symbols is relatively small .

在此基础上，通过忽略对检测性能影响较小的因素，分别提出了降低计算复杂度的多符号差分近似自动球形译码（MSDAASD）与降低比较操作次数的多符号差分裁减自动球形译码。

Furthermore , by ignoring nonsignificant factors in the performance , a multiple symbol differential approximate ASD with reduced computational complexity and a multiple symbol differential pruning ASD with reduced the number of comparisons are presented .

OFDM系统中基于符号间相位差分调制的频偏估计模糊度校正算法

Frequency Ambiguity Resolution Algorithm for OFDM Systems Based on Phase Differential Modulation between Adjacent Symbols

扩频定位系统中一种利用导引符号提取载波差分相位的方法

A Method of Acquiring Carrier Difference Phase in Spread Spectrum Orientation System by Pilot Symbols

科学计算及其应用常常需要多变量函数的有关偏导数问题的计算，通常使用的计算方法是符号微分或差分近似。

Evaluation relevant to the partial derivatives of the multivariable functions is often done in scientific computation , usually by means of the symbolic differentiation or the divided difference .

逐符号译码的短波差分跳频系统性能分析

Performance Analysis of Symbol-by-Symbol Decoding Shortwave Differential Frequency Hopping Systems