查询词典 bit error rate

Matching and bit reversal based on prediction arithmetic utilizes the relativity between continuous two frames/slices. It locates error position by setting a number of featured syntax fields and predicted values. The most perfect result is that the arithmetic can correct n+1 bits error by n featured syntax fields.

基于预测的匹配翻转算法充分利用时域上前后传输单位之间头部字段的相关性，通过设置特征字段以及其预测值来确定出错范围，进行纠错，理想情况下设置n个特征字段最高可以纠正n+1个比特错误。

Computer science a bit that is used in an error detection procedure in which a 0 or 1 is added to each group of bits so that it will have either an odd number of 1's or an even number of 1's; e.g., if the parity is odd then any group of bits that arrives with an even number of 1's must contain an error

parity：简介奇偶校验位，在数据存储和传输中，字节中额外增加一个比特位，用来检验错误。它常常是从两个或更多的原始数据中产生一个冗余数据，冗余数据可以从一个原始数据中进行重建。不过，奇偶校验数。。。详情

Computer science an error detection procedure in which a bit (0 or 1) added to each group of bits so that it will have either an odd number of 1's or an even number of 1's; e.g., if the parity is odd then any group of bits that arrives with an even number of 1's must contain an error.

差错检测过程附加在一组二进制数字上的一个二进制数这一位用来使所有数字的和总是一个奇数；或者总是一个偶数。

The error bit ratio performance formula for the block precoded OFDM system with zero forcing and squared error receivers in Rayleigh Raying channels is deduced in this paper.

推导了在瑞利衰落信道下的分组预编码正交频分多址调制系统，接收机采用迫零均衡和最小均方误差均衡的系统误码率公式。

The paper investigates both block-type pilot linear minimum mean square error algorithm and IEEE802.16 OFDM channel estimation analysis. Simulation results confirm the block-type pilot structure is more suitable for IEEE802.16 system. An optimal pilot setting algorithm, based on space frequency domain, is explored and the pilot chart is presented. The proposed algorithm finds its application in MIMO-OFDM. Simulation results show the algorithm presents a good approximation to the perfect channel state information curve, with about 2dB difference in SNR. The simulation results also demonstrate the algorithm achieves fairly high stability in the environment of fast fading, performance of the proposed algorithm is better that of pilot training channel estimation.3. Taking into account the characteristics of IEEE802.16 OFDM system, OFDM system simulation platform is constructed in Matlab, exploiting simulink as a tool. OFDM modulation and demodulation simulation system are configured on LabVIEW platform. All the system signal processing is simulated, including defining system parameters, designing modulation model, and verifying all the proposed algorithms under different environments, such as white Gaussian noise, multi-path fading, with or without guard interval etc. Bit error performance is evaluated. The research provides valid theoretical basis for practical OFDM system performance evaluation.4. Taking advantage of software radio, the paper designs a hardware platform with both 256-IFFT/FFT and 512-IFFT/FFT OFDM schemes co-existing in one platform. You can predetermine one from the two schemes to carry out almost the same model function with different system performance and parameter setting.5. Referring to IEEE802.16 standard, the paper proposes a design method for generating signals and frames suitable for laboratory investigations implemented in laboratory environment.6. Based on 6701evm digital evaluation card, combined with analogy front-end, the paper designs a DSP software model to deal with baseband signal processing. An overall OFDM scheme, with modulation and demodulation function, is accomplished.

讨论分析了MIMO-OFDM中一种基于空频域的最优导频设置算法，给出了导频图案，通过仿真实验表明，该算法与理想的信道状态信息曲线非常接近，信噪比差距约在2dB左右，并且在快衰落条件下具有较好的稳定性，其性能要优于基于前导训练的信道估计方法。3、根据IEEE802.16OFDM系统特点，论文分别在Matlab中应用Simulink工具构建OFDM系统仿真平台、在LabVIEW平台上实现了OFDM调制解调仿真系统，模拟了整个系统的信号流程，进行了OFDM仿真系统参数的选择和调制模块的仿真设计、论证各算法性能，并根据各种不同的条件：例如高斯噪声、多径衰落、有无保护间隔等，对系统的误码特性进行了评估，为正确评价实际OFDM系统的性能提供了有效的理论依据。4、论文以软件无线电思想作为指导，提出了以256点IFFT／FFT为核心和以512点IFFT／FFT为核心的两种OFDM算法模式并存于同一个硬件平台、且可预选的方案，它们在参数选取和性能指标上有所差异，均实现了相似的模块和功能。5、论文参考IEEE 802.16无线网络标准的参数设置，针对本设计系统的应用环境和系统硬件的性能速率，提出了一种应用于实验室环境的信号结构、帧格式等参数设计。6、论文基于TI公司的6701evm数字评估板卡，结合模拟前端搭建数字中频平台，设计了基带处理的DSP软件模块并进行系统调试，基本实现了一套完整的OFDM调制解调方案。

The author briefly introduces the channel estimation methods and decision criterions of both SISO-OFDM system and MIMO-OFDM system, and gets the compared figures about performance of mean square error and bit error ratio.

作者简要介绍了传统SISO-OFDM系统和MIMO-OFDM系统信道估计的方法和判决准则，并给出了这些算法之间的均方误差和比特误码率的性能比较曲线。

If operate as per production regulation,qualified non-polluted agricultural products can be produced.4 The detection rate of r-BHC in the grain is 24.0%,which is within the range of standard,other BHC isomers are not detected;No BHC in vegetables;No DDT in grain and vegetables;The total detection rate of 4 types of organic phosphor pesticides is 31% in the grain and vegetables,within which the content of dichlo rovinyldimethy 1 phosphate and dimethoate is a little bit higher than the standard,but the content of Baytex and Sunithion is lower than the staneard.5 The heavy metal detection rate in the grain and vegetables are stated respectively as following:Arsenic:none,none; Chrome:8%,72.4%; Lead:6%,13%;Cadmium:none,none; Hydrargyrum :none,none.

粮食中γ一六六六的检出率为24.0％，未出现超标现象，其他六六六异构体均未测出，蔬菜中六六六未检出，粮食和蔬菜的DDT未检出；粮食和蔬菜中的四种有机磷农药总检出率为31％，其中敌敌畏、乐果出现个别超标现象，倍硫磷和杀螟松未出现超标现象。 5、重金属在粮食和蔬菜中的检出率分别是：砷：未检出、未检出，铬：8％、72.4％铅字6％、13％，镉：未检出、未检出，汞：未检出、未检出。

Assume that the probability of bit error is 10^-3 and that it is independent for each bit.

传输每一比特时发生错误的概率是10^-3(10的-3次方，即0.001)，且每一比特的传输都是独立的。

A bit inserter segments a received data bit stream into at least two subframes, and inserts the generated specific bits at locations where an error probability is higher in the respective subframes.

位插入器将接收的数据位流分段成至少两个子帧，并将生成的特定位插在各个子帧中出错几率较高的位置上。

Moreover, the optimum thickness of ONO stack performs excellently for almost no gate disturbance, no read disturbance and long data retention. Even after 10K P/E cycling stress, the error bit wouldn't happen in such device's sensing window. As a result, the WSG-SONOS memory with split-control gate in NAND array is very adapted for the 2 bit/cell mode with multi-level operation.

此外，利用最佳化的ONO厚度可以达到非常优秀的抗闸极扰动、抗读取扰动与长时间资料保存的能力；即使经过一万次的重覆写入/抹除的操作后，仍能够保有原始的临界电压窗差值并在位元感测区间的范围之内，而不会有位元判断错误的结果发生。

The father that if work,mad father, love annoys, disposition is too indrawn the be short ofing that the father of Mu Ne, resign oneself to adversity causes father easily to love is broken; Communicate time effectively between father and son, Mu Zizhi to be less than a hour on average to wait a moment every week, it is the cause that causes the child to become addiction.

如工作狂的父亲、爱愤怒的父亲、性格过于内向木讷、逆来顺受的父亲都易造成父爱的缺失；父子、母子之间的有效沟通时间每周平均小于一小时等等，都是造成孩子成瘾的原因。

These are vandal proof and they come with a locking mechanism.

这是野蛮的证据，他们来到了锁机制。