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error bit
相关语句
  误码
     The simulation result obtained at bitrate of 96kb/s and error bit rate of 1×10-4 is satisfactory.
     在传输码率为96kbit/s、误码率为1×10~4情况下,本文对一些国际通用序列图像数据进行了计算机模拟测试,得到了令人满意的结果。
短句来源
     By statistical analyzing, the characters of the MAI and self-interference are studied and the numerical results of the error bit rate are given.
     本文通过概率分析,着重对这种系统的多址干扰、自干扰特性进行了研究并给出了误码率的数值结果。
短句来源
     The formula of the error bit rate of the system is proved when the multipath delay is less than half of the signal period.
     论证结果表明 ,FM-DCSK系统对于延迟小于码元周期一半的多径干扰能很好的抑制 ,并推导了多径延迟小于码元周期一半的多径信道下该系统接收端的误码率公式。
短句来源
     A novel explicit error bit notification mechanism for wireless network
     无线网络下一种新的显式误码通知机制
短句来源
     An algorithm of FEC (Forward Error Correction) system and it’s FPGA implementation were researched,. Then the FEC system was applied to an audio transmission platform. The platform can decrease the error bit rate to 1×10-7 when channel error bit rate is 3×10-3. VerilogHDL was chosen to design the circuits.
     研究了一种前向纠错(FEC)算法及基于FPGA的相应电路设计,将此电路应用于数字音频无线传输,搭建了一个完整的数字音频无线传输平台,当无线信道误码率为3×10-3时,经过该纠错电路可以降低到1×10-7以下。
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  错误比特
     In this paper four schemes of the codeword assigment are compared on the condition, that a sample has not more than one error bit.
     本文在每个取样中的错误比特不多于1个的条件下,比较了四种码字分配方式。
短句来源
  “error bit”译为未确定词的双语例句
     The computer simulatio ns show that the error bit rate can be d ecreased from1.925×10 -2 to 2.614×10 -5 in urban area,and the results can satisfy human eyes if important bits have no errors.
     结果表明在市区环境下,能使误比特率由1.925×10-2降至2.614×10-5,在重要信息比特没有出现差错时,视频传输的主观效果基本满足要求。
短句来源
     The simulation results show that the detection performance of the new method is better than that of the method in the reference 7 for 2dB,and than that of the traditional MUD methods for 4~5dB,at error bit rate 10-3.
     仿真结果表明,文章所提出方法在误比特率为10-3时,信噪比比文献7方法的信噪比改善约2dB,比传统盲多用户检测法信噪比改善4~5dB。
短句来源
     Heterogeneous services have different quality of service (QoS) requirements, for example, the requirements of time delay, error bit rate, and transmission rate for heterogeneous services are difference.
     不同业务有不同的服务质量(QoS)要求,如对时延、误比特率、数据速率的要求不同。
短句来源
     Numerical simulation on TPC-OFDM mapped QPSK and 16QAM signals in different multipath fading channels show that using the proposed method, the performance of TPC-OFDM can be improved from 6dB to 10dB at error bit rate of 10-5 over the conventional iterative decoding. The error floor of TPC-OFDM in severe multipath fading channels can also be reduced efficiently.
     通过对不同多径衰落信道中QPSK映射和16QAM映射的TPC-OFDM系统性能的数值仿真,结果表明在10-5误比特率下,这种新方法比传统的迭代译码大约有6-10dB的改进,对严重多径环境下TPC-OFDM系统的错误平底也有明显的改进。
短句来源
     This letter mainly deals with the base of adaptive modulating technique: Channel estimation technology and the signal to noise ratio vs. error bit rate performance of MQAM.
     本文主要研究自适应调制技术的基础:信道估计技术、MQAM 信噪比误比特率性能。
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  error bit
It remains all the features of Embedded Block Coding with Optimized Truncation (EBCOT) such as resolution progressive, good robust for error bit spread and compatibility of lossless compression.
      
The resulting error bit stream includes information on both copy and prediction errors, and are compressed by HCC.
      
If one event number out of the nine does not correlate, an error bit is set.
      
At the receiver, if a frame has at least one error bit it will be considered as error.
      


In the recent two years, there is a contention among domestic telemetry circles on the characteristic (energy efficiency) of two kinds of telemetry systems: QPPM-ASK and PCM-PSK. The point at issue is how to calculate the eguivalent probability of error bit Peb. The aim of this paper is to calculate the Peb more exactly, get corres-ponding conclusion and explain that it is coincident with the fundamental theorem of communication-Shanon theorem.

近二年来,国内遥测界正在就QPPM—ASK与PCM—ASK二种遥测系统的性能(能量效率)优劣问题开展讨论,问题争论的焦点在于怎样推算QPPM—ASK系统的等效比特误码率Peb。本文的目的就是要正确推算出此误码率Peb,并在此基础上得此相应的结论,最后说明此结论是符合通信的基本定律—山农定律的。

Because of the recursive construction of the DPCM decoder, when a channel error occurs, the error propagates in the form of a specific error pattern in the reconstructed picture. The initiating magnitude of this error pattern is determined by the characteristic of the quantizer, the codeword assigment and the bit position in the error. Due to the unequal probability distribution of quantized predictive differences and the nonlinear characteristic of the quantizer different schemes of the codeword assigment have...

Because of the recursive construction of the DPCM decoder, when a channel error occurs, the error propagates in the form of a specific error pattern in the reconstructed picture. The initiating magnitude of this error pattern is determined by the characteristic of the quantizer, the codeword assigment and the bit position in the error. Due to the unequal probability distribution of quantized predictive differences and the nonlinear characteristic of the quantizer different schemes of the codeword assigment have different effects on the initiating error magnitude. In this paper four schemes of the codeword assigment are compared on the condition, that a sample has not more than one error bit. The comparison shows that the SM (sign-magnitude) code is the best one in these four schemes, generates the smallest average error magnitude and can reduce the visibility of channel errors.

由于DPCM解码器的递归结构,当出现信道误码时,误差以一种特殊的误差图案形式在复原的图象中扩散。这种误差图案的初始幅值取决于量化特性、码字分配及出现差错的比特位置。由于量化后予测误差的不等概率分布及量化器的非线性特性,不同的码字分配方法对于初始的误差幅值有不同的影响。本文在每个取样中的错误比特不多于1个的条件下,比较了四种码字分配方式。结果表明,符号-幅值码在这四种码字分配方式中性能最好,采用这种码字分配方式可以得到最小的平均误码幅值,并可以减小信道误码的可见性。

The practical application of CCITT Rec. H. 261 is discussed in this paper. An improved Scheme of H. 261 for videoconference image coding is proposed which it compatible with H. 261 in different levels. There are two improvements:1) to improve the picture quality at low bltrate (p = 1, 2), a new control strategy for quantization is proposed; 2) to improve a powerful noise immunity at higher orror bit rate, a new code table for DCT coefficients is set, where the codeword length is an integer multiple of four bits,...

The practical application of CCITT Rec. H. 261 is discussed in this paper. An improved Scheme of H. 261 for videoconference image coding is proposed which it compatible with H. 261 in different levels. There are two improvements:1) to improve the picture quality at low bltrate (p = 1, 2), a new control strategy for quantization is proposed; 2) to improve a powerful noise immunity at higher orror bit rate, a new code table for DCT coefficients is set, where the codeword length is an integer multiple of four bits, and odd-ever check function is provided. It's easy for this scheme to implement in real time with existing ASIC chips and general purpose DSP chips. The simulation result obtained at bitrate of 96kb/s and error bit rate of 1×10-4 is satisfactory.

本文对CCITT H.261建议的具体应用进行了深入探讨,提出了在不同意义下与H.261兼容的改进型H.261编码方案,并在两方面对H.261进行了充实和修正。1)自适应缓冲存储器控制策略,提出新的量化级控制方法——“g跳变法”,使码率较低(p=1,2)时的图像质量明显提高。2)字长有规律的可变字长偏码,提出码字长度为4比特的整倍数并且具有奇偶校验能力的DCT系数码表构造,使误码率较高时系统的抗干扰能力显著增强。在现有ASIC芯片和DSP芯片条件下,改进型H.261易于实时实现。在传输码率为96kbit/s、误码率为1×10~4情况下,本文对一些国际通用序列图像数据进行了计算机模拟测试,得到了令人满意的结果。

 
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