But business partnerships would be more durable if the joys of the partnering part were offset more frequently by the realities of the business bit. 但是,如果企业能先把联姻的喜悦放在一边,更多地考虑一下现实,合作关系会持续得更长久。
Through the analysis of the interference introduced by frequency offset in FMT and OFDM in AWGN environment, the performance of achievable bit rate in the presence of frequency offset by simulation is compared. 分析AWGN环境中,频偏对FMT和OFDM系统造成的干扰,通过计算机仿真比较频偏对两种系统的可达比特率性能的影响。
According to the structure and motion characteristics of the spherical offset mono-cone bit, compound cylindrical coordinates were set up, and basic geometric equations and the conditions of teeth to penetrate rock for the bit were presented. 针对偏心单牙轮钻头的结构和运动特点,利用复合圆柱坐标系统的基本原理,建立了偏心单牙轮钻头几何学基本方程和牙齿对岩石的吃入条件。
Offset mono-cone bit has a spherical cone, the rotation centre line of cone intersects the rotation centre line of bit at a point, and there is a distance between this point and spherical cone centre. 偏心单牙轮钻头有一个球形牙轮,牙轮旋转中心线与钻头中心线相交于一点,该交点与牙轮球心之间有偏移距离。
Focusing on coherent DS-SS/ MPSK system in single path slow fading channel model, this paper analyzes the effect of frequency offset on system performance, and the closed-form Bit Error Rate ( BER) expressions are also obtained. 该文针对单径慢衰落信道模型下的相干DS-SS/MPSK系统,分析了频差对系统性能的影响,得到了误比特率的封闭表达式。
The method can not only be used to predict the bit performance in the offset wells but also to optimize the bit selections. 应用该方法既可以对钻头的预期表现进行评价,也可以进行钻头优选。
The influence of rock, bit load and cone offset on cone/ bit speed ratio is investigated by simulation tests. 接着用软件试验探索岩石、钻压、移轴距对单齿圈牙轮钻头轮体速比的影响。
However, OFDM system is so sensitive to frequency offset, timing error and phase noise that a tiny synchronization offset may lead to the deterioration of the BER ( Bit Error Rate) performance of system, even communication failure. 然而,OFDM技术对载波频率偏差、符号定时误差和相位噪声相当敏感,较小的同步误差即会导致系统的误码性能恶化,甚至于通信失效。
Simulation results show that the carrier frequency offset with the increase of increases the signal bit error rate rapidly. So it is necessary to take effective frequency offset estimation algorithm to reduce the error bit rate communication system. 仿真结果表明随着载波频率偏移的增大,信号的误码率急剧增大,因此有必要采取有效的频偏估计算法来降低通信系统的误码率。