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error rates     
相关语句
  错误率
     The error rates of HLA gene typing were reduced year by year and the error rates of 6 phases were 8.18%,3.84%,2.85%,1.70%,1.10%,0.84% respectively.
     HLA基因分型错误率逐年降低,6期错误率分别为8.18%、3.84%、2.85%、1.70%、1.10%、0.84%。
短句来源
     Reaction time and error rates of reading at 80 cm distance were significantly lower than those of 100 cm (P<0.01).
     随着视距的变小,认知时间和错误率迅速下降,视距80cm与100cm的结果比较,P值均小于0.01。
短句来源
     The QAM system is simulated based on MATLAB6.5/Simulink4.0.Error rates of various QAM systems are obtained as the signal-to-noise changes.
     利用MATLAB6.5/Simulink4.0对QAM调制系统进行仿真,在信噪比变化条件下,得到不同进制QAM系统的错误率,为自适应调制方式选择提供了依据;
短句来源
     Experiments on speaker-independent mandarin isolated word recognition showed that rEER (equal error rates,EER) with the proposed method are lower than those with traditional methods (the rEER dropped from 28.14% in baseline to 23.71% in the proposed method), and the complexity of the system increased only slightly.
     在说话人无关的汉语孤立词识别实验中,使用作者方法比使用传统方法获得的系统等错误率rEER(equal error rates,EER)有明显降低,可以从基线系统的28.14%降低到23.71%,而系统的复杂度仅有小幅度的上升.
短句来源
     No significant difference was found between reaction time and error rates of reading characters of 7 mm and 8 mm heights but they significantly lower than that of 5 mm or6 mm characters.
     在四种字高中,认知时间和错误率是以7mm字高为拐点,7mm、8mm字高的认知时间和错误率明显低于5mm、6mm字高的认知时间和错误率(P<0.01),而7mm、8mm字高结果之间却无明显差异。
短句来源
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  差错率
     In order to increase the performance of TCP(Transport Control Protocol) in networks with long propagation delay and high link error rates,detection unit scheme,an active and self_adaptive scheme,has been involved in many implementations for TCP improvement.
     为提高TCP协议在长时延、高差错率网络中的性能,探测元机制做为一种主动自适应机制,在TCP的许多改进实现中被涉及。
短句来源
     Also, the trade-off on the design of impulse radio system with PSK and MSK modes is given, and according to different bit error rates, the maximums of the number of the users supported by the system and the transmission symbol rate are obtained.
     给出有关使用PSK及MSK调制方式的冲激无线电通信系统设计的折衷方法 ,并得出不同比特差错率条件下系统支持的用户数量和传输符号速率的最大值
短句来源
     By approximation error rates based on the distance measure of sets,the factors a,r and can be reinterpreted.
     通过基于集合的距离度量公式,可以给出近似差错率来解释α,π和γ。
短句来源
     while when the greatest admissible retransmission value gets larger, the error rates provided to the TCP layer get small, concurrently the performance of the protocol itself is destroyed.
     而当最大允许重传次数增大时,在减小提供给TCP层的差错率的同时,协议本身性能要降低.
短句来源
     The results showed that the error rates based on optimum threshold are superior to those based on other threshold.
     结果表明,最佳门限下调制方式的差错率明显优于其它门限下的差错率
短句来源
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  误码率
     ANALYSIS OF BANDWIDTH AND ERROR RATES OF FM RDS
     FM RDS的占有带宽和误码率分析
短句来源
     The transmission efficiency of digital co mmunication links with high bit error rates and high slip rates was enhanced by the Maximum A Posteriori-based frame synchronization algorithm.
     针对高误码率、高滑码率的恶劣无线数字传输链路,为了提高帧同步判决的可靠度并从而提高系统传输效率,该文提出了一种基于最大后验概率(MAP)的定长帧同步判决算法。
短句来源
     The bit error rates of system decrease similar to conic drop or part of it similar to conic drop, imitate separately with the conic of different coefficient, can control difference in 0.005 ̄0.02 ranges.
     系统误码率随信噪比增加以近似二次曲线下降或部分近似二次曲线下降,以不同系数的二次曲线分别进行模拟,可以控制差值在0.005 ̄0.02范围内。
短句来源
     Bit error rates will be quite high when transmit video coding in error-prone environments such as Internet and wireless communication network etc.
     在易错环境如因特网、无线通信网中传输视频流,误码率相当高。
短句来源
     To overcome the disadvantages such as higher error rates, propagation delay and so on, a HF agent protocol for IP message was used in the transfer layer.
     在传输层中,采用IP报文代理协议,克服误码率高、时延大等不利于传输的缺点.
短句来源
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  误差率
     Results Error rates of clinical staging to surgico-pathological staging were:15.78%(stage Ⅰ),50%(stage Ⅱ)and 66.9%(stage Ⅲ) respectively.
     结果 临床分期与手术分期误差率Ⅰ、Ⅱ、Ⅲ期分别为15 .78%、5 0 %、6 6 7%。
短句来源
     ANALYSES OF TRANSMISSION CHARACTERISTICS FOR LINE CODES AND EXPERIMENTAL RESULTS OF ERROR RATES FOR AMI CODE AND HDB, CODE
     几种线路码传输特性的分析与HDB_3码、AMI码误差率试验结果
短句来源
     Results: The correspondence between the accounts and the numbers of expensive drugs was perfectly accurate,and the error rates of checking common drugs were(0.53‰,-0.015‰) and 0.24‰ in the inpatient-department,outpatient-department and emergency pharmacies,respectively.
     结果:住院药房、门诊药房和急诊药房贵重药品帐物达到完全相符,普通药品盘点误差率分别为0.53‰、-0.015‰和0.24‰。
短句来源
     It is also reported here the experimental results of error rates for AMI code and HDB_3 code.
     本文还报导HDB_3码和AMI码的误差率试验结果。
短句来源
     By considering the error rates and the training speed of neural networks,a hierarchical classifiers which is called as BP-LVQ neural network combination model is proposed in this paper.
     综合考虑神经网络分类误差率以及训练速率,文中从组合分类器结构出发,提出一种树形多层的BP-LVQ神经网络组合分类器模型。
短句来源
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  error rates
The throughput of LANs with the DCF mechanism under high load and in noise is evaluated by an analytical method, which ensures high estimation accuracy for any values of protocol parameters and bit error rates.
      
Closed-form error rates of STBC systems and its performance analysis
      
The closed-form solutions for error rates of Space-Time Block Code (STBC) Multiple Phase Shift Keying (MPSK) systems are derived in this paper.
      
With characteristic function based method and the partial integration based respectively, the exact expressions of error rates are obtained for (2,1) STBC with and without channel estimation error.
      
Simulations show that the practical error rates accord with the theoretical ones, so closed-form error rates are accurate references for STBC performance evaluation.
      
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In this paper, transmission characteristics of HDB_3 code, AMI code, B6ZS code and ADQ code, which are often used in digital communications, are analysed and reduced finally to the error probabilities of line codes. It is also reported here the experimental results of error rates for AMI code and HDB_3 code. These experimental results have verified the theoretical analyses in this paper. Considering the other advantages of AMI code in case of introduction of a scrambler, it is believed that the scrambled...

In this paper, transmission characteristics of HDB_3 code, AMI code, B6ZS code and ADQ code, which are often used in digital communications, are analysed and reduced finally to the error probabilities of line codes. It is also reported here the experimental results of error rates for AMI code and HDB_3 code. These experimental results have verified the theoretical analyses in this paper. Considering the other advantages of AMI code in case of introduction of a scrambler, it is believed that the scrambled AMI code is more helpful to digital baseband transmissions than-other codes.

本文分析数字通信中常用的HDB_3码、AMI码、B6ZS码和ADQ码的传输特性,并最后归结到这几种码的误差率。本文还报导HDB_3码和AMI码的误差率试验结果。试验结果证实了本文的理论分析。考虑到在使用了扰码器时,AMI码就具有更多的优越性,从而可以进一步断言,加扰码器的AMI码是比较优越的线路码。

Several demodulation schemes for split phase coded PSK signals are described in this paper.In section 1,schemes,based on the principle of binary signal demodulation,of the split phase demodulation are suggested,and different formulae for error rate are derived and verified.By these formulae,the error probability performance degradation due to the error of system synchronization is obtainable.In section 2,according to the characteristics of split phase coding,a number of other demodulation schemes are given,and...

Several demodulation schemes for split phase coded PSK signals are described in this paper.In section 1,schemes,based on the principle of binary signal demodulation,of the split phase demodulation are suggested,and different formulae for error rate are derived and verified.By these formulae,the error probability performance degradation due to the error of system synchronization is obtainable.In section 2,according to the characteristics of split phase coding,a number of other demodulation schemes are given,and the corresponding formulae of error rates are also derived.By comparing the error rate of different demodulation schemes,it is revealed that coherent demodulation has the lowest error rate.

本文叙述了几种分相码移相信号的解调方案。第一部份根据二元信号相干解调原理,拟定分相码移相信号相干解调方案,并且导出及验证了各误码率公式,并且可知定时不准对误码率的影响。第二部份,根据分相码的特点,提出几种解调方法并推导出相应的误码率公式。把各种解调方法的误码率相比较,可知相干解调的误码率为最小。

In this paper are discussed the statistical properties of the averaging adaptive threshold detection in more general conditions in which the sample values may be pure noise or useful signal mixed up in noise and so their probability distributon functions, mean values and variances may be the same or different. This averaging adaptive threshold detection is a generalization of Reference [2], It may be Used in both digital communication and radar. When the adaptive detection is used in Rayleigh fading of short...

In this paper are discussed the statistical properties of the averaging adaptive threshold detection in more general conditions in which the sample values may be pure noise or useful signal mixed up in noise and so their probability distributon functions, mean values and variances may be the same or different. This averaging adaptive threshold detection is a generalization of Reference [2], It may be Used in both digital communication and radar. When the adaptive detection is used in Rayleigh fading of short wave telegram communication, its error rates are less than any fixed threshold detection with respect to any input signal noise ratio.

本文分析了平均值自适应门限检测器的统计特性,导出了在实用中常见的慢衰落信道上的平均值自应门限检测器的误码率.分析结果表明:在慢衰落信道上采用这种平均值自适应门限检测器的误码率,相对于固定门限检测器来说,在不同输入信/噪比的情况下,都有不同程度的降低.本文讨论的虽是通讯问题,但其基本结果,也适用于雷达.

 
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