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bit-error     
相关语句
  误码
     The bit-error rate of various channels is better than 4 ×10- 12~ 4× 10-15.
     系统各信道误码率优于4×10-12~4×10-15。
短句来源
     The scheme of Viterbi decoding of convolutional codes ( r= 1/2, k= 6) can provide more improvement for bit-error probability, but the code-rate is less than 50%.
     卷积码的维特比(Viterbi)译码(r=1/2,k=6)方案对误码率可提供更大的改善,但传输效率<50%;
短句来源
     Detection of IJF-OQPSK modulated signals and its performance of bit-error rate
     IJF-OQPSK调制信号的检测及其误码率性能
短句来源
     Bit-error rate is (BER) below 10~(-14).
     误码率小于10-14;
短句来源
     The result of theoretic calculation shows that by the method, the page-correct rate can be 91.3 percent under the condition of average bit-error rate 10~(-3).
     理论计算结果表明,采用本数据保护方法,在平均误码率P_e=10~(-3)的情况下,图文电视系统页正确率可达91.3%。
短句来源
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  误比特
     A study of the bit-error performance of a BPSK communication system based on Turbo encoding and decoding scheme
     一种基于Turbo编译码方案的BPSK系统误比特性能研究
短句来源
     A wireless transmitter and receiver based on π/4DQPSK, as the first application of the platform, was designed and tested on the platform. Its bit-error performance curve which was compared with M.Scarpa's work shows the correctness of the realization process.
     在平台上快速实现了一种基于π/4DQPSK的无线数据发送器和无线数据接收器,对其实现过程的主要环节进行了描述,并对传输性能进行了测试,通过所测试的误比特率性能曲线和其他文献的对比,证明该系统设计和实现的正确性。
短句来源
     A bit-error probability formula for Gaussian minimum-shift keying (GMSK) satellite mobile communication system with differential phase detection(DPD) and L-branch maximal ratio combining(MRC) under different channel conditions was presented.
     导出了采用 L重最大比组合 ( MRC)和差分相位检测 ( DPD)方案的高斯最小频移键控 ( GMSK)卫星移动通信系统在不同信道条件下的误比特率公式 ,并利用实测数据给出数值计算结果。
短句来源
     Simulation results show that the wavelet multiuser detector can achieve relatively lower bit-error rate (BER) and better near-far resistance ability.
     仿真结果表明,小波多用户检测器具有较低的误比特率和较好的抗远近干扰能力.
短句来源
     Finally, the quality of recovered source image is assessed, and the approximate formula of bit-error rate in term of code length is also obtained.
     对图像恢复质量进行了评估 ,并给出了误比特率与码片长度的经验公式
短句来源
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  比特误码
     Discussions are focused on the coding method of cyclic code, the concret situation of CRC in the first bit of a frame, the frame location of CRC and the monitoring of bit-error and mode.
     并对循环码的编码方法、帧内第1比特的具体描述、CRC的帧定位以及利用比特误码监测等进行了论述。
短句来源
     The marginal probability density function(PDF) of n-NTx system is deduced and an approximate closed-form expression of Bit-Error Rate(BER) bound for BPSK/QPSK is derived in detail over the uncorrelated Rayleigh fading channels.
     给出了求解选择性信道的序系数,推导了n-NTx系统的边缘概率密度函数(pdf)。 在独立的平坦瑞利衰落信道中,完整地导出了n-NTx系统关于BPSK/QPSK调制的比特误码率(BER)性能界的理论表达式。
短句来源
     Employing an approximate formula of EGC,the bit-error rate(BER) performance of EGC system is analyzed in theory. Finally,comparing with the numerical values of selection combining(SC),MRC and Monte-Carlo simulation results,it shows that the approximate values of EGC can replace the true values of EGC system in practical applications
     该理论式的数值结果与蒙特卡洛仿真结果比较以及与选择合并和最大比率合并的理论数值结果比较均表明:在实际应用中,采用近似结果能基本替代EGC系统的比特误码率.
短句来源
  比特错误
     In this paper,the channel coding in satellite digital video broadcasting system is analysed,and the Viterbi decoding byte error probability replaced bit-error probability to analyse DVBS channel coding performance. We have obtained an improved upper bound of the byte error probability,it is more suitable to analyse coding scheme of inner comvolution and outer R-S coding in DVB-S system.
     本文分析了卫星数字视频广播系统(DVB-S)中信道编码的方式,并采用Viterbi译码器字节错误概率代替比特错误概率的方法来对DVB-S信道编码系统进行分析,所得到的字节错误概率上限界更适于分析DVB-S系统中级联卷积码内码和R-S外码的编码方案。
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      bit-error
    Then, by viewing the bit-error-rate profile (BERP) with respect to different starting symbol position within a symbol block, it is shown that those leading data symbols suffer more from the cyclic-ISI effect and lead to a high error floor.
          
    The optimization problem for minimizing the total transmit power from a base station while satisfying the bit-rate and bit-error rate criterion of the various portable users in the system has been outlined.
          
    For a simple CDMA system, we compute the bit-error probability (BEP)with soft-decisionparallel-interference-cancellation (SD-PIC).
          
    Monte Carlo computer simulation has been used to assess thetechnique on the bit-error-rate (BER) performances of the system in the lightshadowed, the average shadowed and the heavy shadowed Rician fadingenvironments.
          
    The bit-error rate (BER) for a forward-link cellulardirect-sequence code-division multiple-access (DS-CDMA) systemis evaluated.
          
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    The minimum (frequency) shift keying (MSK) is a digital modulation with good performance.From the viewpoint of phase continuity,three methods of generating MSK signals and their relations are discussed in this paper.For the computer simulation based on the microwave digital communications,a equivalent MSK baseband model is presented.The factors having effect on the bit-error-rate (BER) performance are simulated by computers under the conditions of limited bandwidth and amplitude limitation.

    最小频移键控(MSK)是一种性能较优的数字调制。本文叙述MSK信号的三种产生方法之间的关系、MSK信号功率谱以及MSK信道的计算机模拟。文中根据系统的方块图导出系统的基带等效模型,在不同的信道带宽和硬限幅条件下,模拟对系统误码率的影响。

    This paper analyses the reception performance of 2PSK signals under non-ideal conditions. The theoretical model discussed in reference [1] is referred to as the ideal condition, and the non-idea) factors are those which generally increase the bit error rate. In some cases, however, such as the clipping of the video waveform, the bit error rate under certain conditions can be lower than under ideal conditions.This paper first simplifies the theoretical model in reference [1] into practical block diagrams and...

    This paper analyses the reception performance of 2PSK signals under non-ideal conditions. The theoretical model discussed in reference [1] is referred to as the ideal condition, and the non-idea) factors are those which generally increase the bit error rate. In some cases, however, such as the clipping of the video waveform, the bit error rate under certain conditions can be lower than under ideal conditions.This paper first simplifies the theoretical model in reference [1] into practical block diagrams and then, corresponding to the block diagrams, gives two specific circuits which have been proven to be satisfactory. Following this is the key parts of the paper which discussed the following five non-ideal factors: (1) the effect of non-ideal integration; (2) the effect of the clipping of the video waveform; (3) the effect of the phase error of the bit syncronization signal; (4) the effect of the finite bandwidth before the integration-dumping circuit; and (5) the effect of the dumping time of the integration-dumping circuit.As the effect of the phase error of the reference signal of the sync detector has been covered in reference [3], it is omitted in this paper.

    本文分析了双相相移键控信号非理想条件下的接收性能。理想情况是指文献[1]的理论模型。非理想因素一般是使误码率变坏,但有时,如视频波形的限幅,在一定条件下竟能得到比理想情况更好的误码率。 本文首先简单地把文献[1]的理论模型简化为实际方块图,然后举出了与实际方块图对应的,实际证明效果良好的具体电路。 然后,本文重点讨论了五种不理想因素。即(1)非理想积分的影响;(2)视频波形限幅的影响;(3)码位同步信号相位误差的影响;(4)积分清除电路前带宽的影响;(5)积分清除电路放电时间的影响。关于同步检波参考信号相位误差的影响,文献[3]已讨论过了,本文从略。

    This Paper discusses the random error, the burst error, and the bit error rate of the telecontrol system and its operation demand by the electric power system. The false synchronization probability , loss of synchronization probability of frame delimitation which is used in a microprocessor telecontrol system and its transfer efficiency are analysed. The frame delimitation suggested by IEC TC-57 Com mittee is also analysed and an improved method is suggested.

    本文分析了突发干扰、随机干扰和电力系统的运行要求,讨论了远动系统对信道误码率的要求。分析了一种微型计算机远动系统的帧同步字的假同步概率、漏同步概率和传输效率。对国际电工委员会(IEC)TC—57委员会提出的远动通信规约中的帧同步字进行了分析比较并提出了一种改进的建议。

     
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