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the bit error probability
相关语句
  误比特率
     THE BIT ERROR PROBABILITY ANALYSIS OF PARTIAL-RESPONSE CONTINUOUS-PHASE MODULATION IN COMPOSITE SATELLITE MOBILE CHANNEL
     部分响应连续相位调制信号在卫星移动信道中的误比特率性能分析
短句来源
     The simulation results show that this system achieves an asymptotic gain up to 4.5dB comparing with a direct decision DFE system when there exists a severe ISI and the bit error probability is 10 -4 .
     模拟结果表明 ,在有严重多径干扰的条件下 ,误比特率为 1 0 -4 时 ,使用 MLSE判决 DFE比使用直接判决 DFE的串行 MODEM性能优约 4 .5d B.
短句来源
     The upper bound on the bit error probability of systems without optical hard limiter and with optical hard limiter are derived taking into account the effect of multiple-user interference, the photodetector shot noise and thermal noise.
     考虑多用户干扰、背景光散粒噪声和接收机热噪声情况下,推导有、无光硬限幅器的红外PPM—CDMA同步系统误比特率上限。
短句来源
     The bit error probability is estimated by the minimum average Euclidean distance. Through simulation, it is shown that the estimation is usually very accurate at high signal-to-noise ratio.
     采用平均最小自由欧氏距离估计误比特率,得到误比特率的封闭式表示,通过计算机模拟,在高信噪比情况下,这种估计方法与实际情况非常接近。
短句来源
     The MIMO channels were mostly used in the high data rate wireless communication. Trellis-coded modulation (TCM) was known to improve error performance in fading channels. An upper bound on the bit error probability was deduced by the formulation, which was in favour of the choice of actual design scheme.
     新一代高速无线数据传输大多采用MIMO信道传输.使用格形码TCM调制,在瑞利衰落信道下,可改善误码性能,用公式法导出瑞利衰落信道下,MIMO格形码调制系统的误码率性能界限,有利于实际方案的选择.本文采用平均最小自由欧氏距离,得到误比特率的公式表示,通过计算机模拟,在高信噪比情况下,该方法与实际情况非常接近.
短句来源
  “the bit error probability”译为未确定词的双语例句
     After an introduction to the principle and implementation of DS-BPSK UWB communication system,an explicit formula for calculating the bit error probability of the DS-BPSK UWB scheme is obtained.
     分析了采用直接序列扩频-二进制移相键控(DS-BPSK)方案的超宽带(ultra-wideband,UWB)通信系统的原理及实现方案。
短句来源
     We give the bit error probability of RS codes, convolution codes and concatenation codes in CM1~CM4 channels, respectively.
     文中还进一步分析了采用信道编码的UWB系统性能,具体仿真了RS码、卷积码和级联码在CM1~CM4信道中的误比特性能,并作出了比较。
短句来源
     On the Bit Error Probability of CDMA Overlay onNarrowband Microwave Systems
     与窄带微波系统共享频段的CDMA系统性能分析
短句来源
     Chernoff bound and another new performance bound are derived based on the statistical model of Rice-Lognormal combinative distribution,and the bit error probability of SU-TC-MPSK schemes is computed.
     推导出了适合这两种模型的Chernoff界和另一种新的特性界表达式,计算了8U-TC-MPSK方案的误比特概率。
短句来源
     A New Method to Evaluate the Bit Error Probability of CDMA System
     一种新的估计CDMA系统误码率的方法
短句来源
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  相似匹配句对
     Intelligent BIT Technologies
     智能BIT技术
短句来源
     Radar BIT design
     雷达机内测试(BIT)的设计
短句来源
     Rotation and Reliability of the Bit
     截齿的可转性和可靠性
短句来源
     And the parameters of bit are chosen by u.
     根据u值设计和选定钻头的5个参数;
短句来源
     Simulation of Bit Errors of Data Circuits
     数据电路误码的模拟方法
短句来源
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  the bit error probability
In order to compare simulated and analytical performance, a new general expression of the bit error probability is developped for square QAM in the presence of phase noise over Gaussian channel.
      
The bit error probability and asymptotic multiuser efficiency are derived as performance measures.
      
An exact expression for the bit error probability of BPSK symbols before and after cancellation, is obtained in the form of an integral The performance of the joint device is investigated for different types of channels.
      
Assuming BPSK symbols an exact expression of the bit error probability before and after equalization is obtained in the form of an integral by means of the characteristic function method.
      
In addition, we have analyzed the system throughput and also introduced a new interference cancellation technique which significantly improves the bit error probability (BEP) of OPPM-OCDMA systems.
      
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In this paper we study the optimum signal design scheme which achieves the minimum biterror probability for the multiuser data communication system in which all the subchannels are uncorrelatedHomogeneous Random Time-Varying Channels (HRTVC) and the users modulate antipodally a set ofassigned signal waveforms without carrier phase or bit interval synchronism among them. We first studythe minimum bi't error probability which can be achieved by signal design for multiuser data communicationsystem over the HRTVC....

In this paper we study the optimum signal design scheme which achieves the minimum biterror probability for the multiuser data communication system in which all the subchannels are uncorrelatedHomogeneous Random Time-Varying Channels (HRTVC) and the users modulate antipodally a set ofassigned signal waveforms without carrier phase or bit interval synchronism among them. We first studythe minimum bi't error probability which can be achieved by signal design for multiuser data communicationsystem over the HRTVC. The corresponding theoretically optimum signals and their physical realizability are next considered. We find that the physical realizable optimum signals' inphase and quadrature components should be complementaryly like a group of bandlimitted white noise. If we use these signals, there is no degradation due to the presence of other users, and the time dispersion of the HRTVC is beneficial and we can fully utilize it by spreading the bandwidth of the system or the time dispersion itself. In the limiting case. the bit error probability of the multiuser data communication system over theHRTVC is equivalent to that of the single user data communication system over the additive white Gaussiannoise channel.

本文研究所有子信道都是同样统计特性的非相关齐次型随机时变信道时,数字多用户通信系统中的最佳调制波形选择即最佳信号设计问题。用户各有自己的调制波形,各波形间不需载波相位及比特区间的同步。本文研究了利用信号设计在理论上所能达到的最小比特差错概率及其对应的最佳信号设计条件、该最佳信号的物理可实现性问题以及物理可实现的最佳信号。指出物理最佳信号的同相与正交分量应互补地像一组限带白噪声。其它用户的存在不会造成系统通信质量的降低。信道的时间扩散不但无害反而有益,可以用扩展系统的带宽(提高传信率、扩大多址容量、扩展调制波形频谱)或信道的时间扩散自身(增加通信距离、减小天线尺寸)来充份利用。在极限情况下,齐次型时变信道多用户数字传输系统将等效于恒参高斯信道中的单用户数字传输系统。

PCM/PPK telemefry system is a multiple-signal digital communication system whose structure is very simple. In this paper, utilizing the feature that codes transmitted by PCM/PPK are group codes, the bit error probability P_b is analysed and calculated under the various transmission stares, and the transmission error is analysed as the distribution of the prior probability is uniform. The results show that the PCM/PPK is very efficient telemetry system.

PCM/PPK遥测系统是一种结构简单的多元系统。本文利用PCM码是群码的特性,分析计算了它在不同传输状态下的误码性能。当发送先验概率为均匀分布时,分析了它的误差。结果表明PCM/PPK是一种非常有效的系统。

The sequential detecting of received symbol sequences which are transmitted over a Homogeneous Random Time-Varying Channel(HRTVC)is discussed.Then lower and upper bounds on the bit error probability of sequential detectors with different mismatch are obtained.These bounds are rather tight when the SNR and the smbols that interfere with each other are large.We find that there exists an optimum transmis- sion rate which makes the bit error probability minimum for a given mismatch and a given SNR,the...

The sequential detecting of received symbol sequences which are transmitted over a Homogeneous Random Time-Varying Channel(HRTVC)is discussed.Then lower and upper bounds on the bit error probability of sequential detectors with different mismatch are obtained.These bounds are rather tight when the SNR and the smbols that interfere with each other are large.We find that there exists an optimum transmis- sion rate which makes the bit error probability minimum for a given mismatch and a given SNR,the more severe the mismatch,the lower the optimum transmission rate. If there were no mismatch,the intersymbol interference(ISI)would never limite the transmission rate,the more severe the ISI,the better the system performance,and in the limiting case,when the support of the ISI became infinite,the bit error pro- bability would approach to that of the AWGN channel.

本文介绍了应用于齐次性随机时变符号干扰信道中的序列检测枝术,求出了不同失配时,序列检测器比特差错率的上下界。在信噪比较高、符号干扰严重时,上下界相当紧密。在失配与信噪比一定时,存在一个使比特差错率最小的最佳传信率。失配越小,最佳传信率越高。在无失配时,符号干扰再也不是限制传信率的因素,符号干扰越严重,系统性能反而越好。在符号干扰无限严重时,系统反而被改造成恒参高斯信道了。

 
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