查询词典 bit error rate

Impact of aperture averaging on bit error rate for free space optical communication.

空间光通信中平台振动对误码率影响的抑制。

In multipath frequency selective fading channels the bits could be adaptively allocated in the subchannels according to the subchannel gains to minimize the total transmission power for a given bit error rate .

OFDM在多径传播通过的频率选择性无线信道时，根据子信道的增益对子信道传输的比特数自适应分配，可以在满足特定比特误码率的前提下使整体传输功率达到最小。

Multiple antenna arrays are often used to overcome the effect of channel fading which is caused by multipath interference. In chapters 4 and 5 ,we derive spatial correlation equations of ULA ,UCA and CRA for two types of angular spread distributions (uniform distribution and truncated Gaussian distribution).We also compare the difference between these antenna arrays by showing the bit error rate simulation results and discuss the relationship between BER and spatial correlation. In a multi-user mobile radio environment , we present simulation results to show that adaptive MBER algorithms have better performance than the traditional MMSE algorithm.

多天线阵列常被用来克服多重路径干扰导致通道衰减的影响，我们对各种天线阵列架构进行比较，在第四、五章中推导出ULA、UCA与CRA个别对两种角度扩散机率密度分布的空间相关性函数，由实际实验模拟的位元错误率图形比较天线阵列间的差异，并讨论位元错误率与空间相关性之关连，在多用户端行动通讯环境下，我们也由模拟验证可适性MBER演算法，会比传统MMSE准则有更好的效果。

In this paper, we give the simulation results of bit error rate based on group counterchange method for BCH codes in UWB communication system in the condition of AWGN channel.

本文给出了群变换方法构成的BCH编码在超宽带通信系统中的误码率仿真结果。

Ultra wideband, pulse design, energy spectrum, group counterchange BCH code, LDPC, orthognal-like matrix, bit error rate

超宽带，脉冲设计，群变换BCH码，LDPC码，类正交矩阵，误码率

Exact formulae for the end-to-end average bit error rate and average number of connected hops in the communication route are deduced separately for the interfering and noninterfering environments.

本文在基于网络节点均匀分布的情况下，对AdHoc传感器网络的连接性进行了理论计算，在无干扰和有干扰环境下分别得出了通信路由中端到端平均误比特率和平均连接跳数的精确表达式。

On the basis of introducing the channel and system model of wireless optical communication,average bit error rate of uncoded and RS coded system with channel side information were analyzed,and compared with Turbo coded system from the following two aspects:received optical power and Log-amplitude fluctuation variance.

在介绍无线光通信信道及系统模型的基础上，推导了无线光通信未编码系统和RS编码系统在已知信道边信息条件下的平均误码率，从接收光功率和对数振幅起伏方差方面对RS码编码系统和Turbo编码系统的性能进行比较。

In a system of space optical communication,it will influence to bit error rate of the communication system when the optical transmitter wiggles as vibration of the satellites platform.

在空间光通信系统中，由于卫星平台的振动，使得光发射机发生摆动，从而对通信系统的误码率产生影响。

Wireless Mesh Network; transmission performance; IEEE 802.11 MAC; Markov chain; Bit Error Rate; packet loss; contention window; priority

论文导师杨寿保，论文学位博士，论文专业计算机系统结构论文单位中国科学技术大学，点击次数 13，论文页数 104页File Size6302K

The spectral efficiency can be maximised by choosing the highest modulation scheme that will give an acceptable Bit Error Rate.

光谱的效率能被藉由选择最高的调音将会提供可接受的一点点错误率的方案取～最大值。

Objective To investigate the effects of interleukin-1 β converting enzyme gene on the biologic characteristics of ovarian cancer cells.

目的 探讨白细胞介素-1 β转换酶的表达，对卵巢癌细胞生物学特性的影响。

Campylobacter: This illness is the most commonly identified cause of diarrheal illness in the world.

弯曲：这种病是最常见的原因查明腹泻病，在世界上。