误码率

The rate of demodulation error is very low even though there are strong interference within the modulated signal.

即使是在调制信号存在很大噪声的情况下，其解调结果的误码率也很小。

The Moment Generating Function of decision variable and a saddle point approximation method are exploited to analyze the BER performance of FD-SS-CLDD, and the theoretical results are evaluated by simulation.

通过利用判决变量的矩生成函数，并采用鞍点近似的分析方法，得到了频域扩频码片级差分检测的误码率性能的解析表达式，同时进行了仿真验证。

The moment generating function of decision variable and a saddlepoint approximation method are exploited to analyze the BER performance of FD-SS-CLDD, and the theoretical results are evaluated by simulation.

通过利用判决变量的矩生成函数，并采用鞍点近似的分析方法，得到了频域扩频码片级差分检测的误码率性能的解析表达式，同时进行了仿真验证。

Simulation shows that the proposed algorithm can achieve similar performance to that of the ITS using natural binary bit mapping and has about 1dB gap with the ITS using Gray bit mapping. In the high SNR region, the complexity of the proposed bit-level ITS is about 6％~40％ of the symbol-level ITS.

仿真结果表明：在误码率性能上，该算法略次于使用自然二进制映射的基于符号的ITS算法，与使用格雷映射的基于符号的ITS算法只有1dB左右的差距；而该算法的计算量在高信噪比时只相当于基于符号的ITS算法的6％~40％。

Through the cooperation between the fast peak detector and the delay unit,the receiver is realized with lower BER, bettter receiver sensitivity and receiver dynamic range. The output NOR gate can cancell the unwanted peak in dead spaces between packet signals.

采用前馈式结构，通过快速峰值检波电路和延时单元的协同工作，使该光突发模式接收机具有：更低的误码率、较高的接收灵敏度、又有大的光接收动态范围；在输出端采用特殊的或非门技术，消除了干扰。

Through the research on the power allocation, an optimal power allocation strategy is given.

通过对中断概率的研究，给出了最佳的功率分配方案，并对系统理论误码率进行了分析。

The innovation of this thesis can be listed as follows:(1) Based on orthogonal matrix expansion, a construction method of Z-complementary sequences with two-width ZCCZ is presented.

序列的相关性能直接影响到系统的多址干扰和多径干扰的大小，从而在很大程度上决定了系统的误码率性能和传输速率。

The theoretical model of QBER was established with POVM (Positive Operator Valued Measurement).

采用半正定算子测量建立了光纤信道压力作用下的误码率分析模型。

A sensor with balanced detection is introduced to the BB84 protocol and the theoretical model of the QBER is established with POVM (Positive Operator Valued Measurement).

论文将双平衡探测结构引入BB84模型中，利用半正定算子值测量建立了接收端在偏振模影响下的误码率模型。

In the method, a pseudo bit error ratio of a channel is determined.

在这种方法中，确定信道的伪比特误码率。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。