The traditional differential space-time block code (DSTBC) suffers from the signal constellation expansion for QPSK modulation.

传统的差分空时分组编码(DSTBC)在QPSK调制时存在着信号星座扩展。

The BFD is based on SI modular block, the generalized differentiator(GD) proposed in this paper. Various differential functions can be performed by the GD.

这种BFD是用本文提出的SI模块，通用差分器（GD）构成的，此GD具有多种差分功能。

Conclusions An accurate assessment of isthmus block or persistent isthmus conduction is possible with this technique of differential pacing.

结论差异性起搏可准确鉴别峡部形成完全阻滞还是存在缓慢传导。

On the basis of the asymptotic stability of generalized delay differential equations(GDDEs), the numerical solutions of one block methods for GDDEs were analysed.

在广义延迟系统渐近稳定的前提下，分析了用块方法求解广义延迟系统数值解的稳定性。

An important problem in the design of the block cipher is to improve the performance of the resisting differential cryptanalysis.

在分组密码的设计中，提高分组密码的抗差分攻击性能是一个重要的课题。

The first segment 310 of the TPS data block (bit so) is an initialization bit for a differential binary phase shift keying (2-PSK) modulation.

TPS数据块的第一段310（比特S0）为差分二进制相移键控调变的初始比特。

The governing partial differential equations were discretized by finite volumes and the nonlinear algebraic equations were solved by a block implicit algorithm.

用有限体积法离散控制方程，用块隐式法求解离散后的代数方程组。

A differential cryptanalysis of the iterated block cipher based on the new round function is presented.

对基于此种新轮函数的一种迭代型分组密码进行了差分密码分析。

Based on OFDM system, a novel space-frequency-time code which combined trellis-coded modulation with differential space-time block code was proposed.

基于OFDM(正交频分复用)系统，提出了一种新的空频时三维编码，将网格编码调制和差分空时分组码进行组合链接设计。

SPN is a popular overall structure of block cipher, and the differential cryptanalysis and linear cryptanalysis are the most powerful approaches to attack most symmetric block ciphers.

SPN结构是一种流行的分组密码总体结构；差分和线性分析是攻击分组密码的最强有力的方法。

In this thesis, space-time block coding and differential space-time coding are discussed on the basis of "one-ring" correlated channel model.

本文基于一种“单环”相关信道模型，对空时分组码和差分空时码进行了分析和研究。

The restrained characteristic of ratio differential protection is analyzed. The equal block angle for the ratio differential protection is calculated.

分析了比率制动式发电机纵差保护的制动特性，计算了不同比率制动特性的定值曲线对应的等效闭锁角。