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bit error rates
相关语句
  误码率
     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
     Analytical and simulated results show that tail distribution is very different from Gaussian and the effects of passive intermodulation interference on communication systems are mainly in region of low bit error rates.
     分析和模拟结果表明 ,总干扰的尾分布与高斯噪声很不相同 ,无源互调对通信系统的影响主要是在低误码率范围内。
短句来源
     Simulations show that the average spectrum distortion (ASD) of the proposed scheme is better than that of frame - erasure method at different bit error rates.
     计算机仿真结果表明,在不同误码率下该算法恢复出的语音的平均谱失真(ASD)低于帧删除方法的谱失真最大可达0.4dB.
短句来源
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  “bit error rates”译为未确定词的双语例句
     The manufactured PMD emulator has already applied to the experiment of 4×10Gb/s PMD compensation. Self-adapted PMD comensation of 40Gb/s RZ codesystem is achieved using polarization degree for the feedback signal. Bit error rates ofthe demultiplexed 10Gb/s signal are measured.
     研制的光纤挤压式 PMD 模拟器已用于 4×10Gb/s PMD补偿的实验,实现了以偏振度作为反馈信号的 40Gb/s RZ 码的 PMD 自适应补偿,并对解复用后的10Gb/s 信号进行了误码测量。
短句来源
     The performance of the speech signal output under the condition of channel different average bit error rates p and the channel outputby the use different interleaving factors s with speech coding methods--the CCITTstandard PCM with the bit rate of 64kb/s and ADPCM with the rate of 32kb/s, are calculated.
     用PCM及ADPCM编码方法,研究了在信道各种不同平均比特误差率p条件下的语音信号输出性能,以及使用不同交错(Intereaving)因子s条件下信道输出特性.
短句来源
     In order to study the system performance in mulitpath channels, the deterministic two-path model and the statistical S-V model are employed for evaluating the bit error rates of the system by simulation.
     为了研究在多径环境下的系统性能,引入了确定型两径和统计型S-V两种典型室内信道模型。 通过仿真试验得到在此信道条件下系统的误比特率。
短句来源
     Simulation results show that the coding gain of this scheme can achieve 10 dB at bit error rates around 10 -3 compared with the uncoded QPSK in M fading channels.
     仿真结果表明 :在适应于北京地区的M衰落信道中 ,RS码与MPSK相结合方案在不增加频带带宽的前提下 ,与未编码的QPSK相比较 ,在Pb =1 0 - 3时 ,可有 1 0dB的编码增益 .
短句来源
     The application of TCP over wireless networks is a challenging work due to high bit error rates,fading channels and handoff.
     由于无线网络中存在高误码、信号衰落、切换等原因,使传统TCP的应用受到了挑战。
短句来源
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  相似匹配句对
     wireless links have constraints on higher bit error rates (BER) and lower transmission bandwidth.
     无线接入网络存在高误码率和低带宽等限制。
短句来源
     Bit-error rates for two-branch diversity reception and maximal-ratio combining in correlated rayleigh fading
     双分集最大比合并相关瑞利衰落的误码性能
短句来源
     It shows, through numerical results, that bit error rates obtained by Gaussian approximation underestimate the exact results.
     通过大量的仿真结果可以看到,由类高斯噪声产生的比特误码率要低于高斯噪声产生的。
短句来源
     ERROR PERFORMANCE FOR HIGH Bit RATE CHANNEL
     高比特率通道的误码性能
短句来源
     Analysis and Deal with the Wave-Divided Bit Error
     波分误码分析与处理
短句来源
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  bit error rates
For a given quantization level, the Bit Error Rates are examined by considering the influence of the code structure, the block size, and the number of decoding steps.
      
However, propagation impairments can cause severe degradation in bit error rates (BER) for coherent detection.
      
We again find that the framed referential coding scheme exhibits good performance that can lead to significant header compression and packet drop savings for reasonable bit error rates.
      
The performance of BPSK, QPSK, and 16QAM modulation formats are compared and analytical and simulation results are presented in terms of the bit error rates (BER) for these different modulation formats.
      
The bit error rates (BER) of the decorrelating, parallel interference canceler (PIC) and groupwise serial interference canceler (GSIC) with either PIC or decorrelator within the group are compared.
      
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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...

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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