误码率

This thesis has made important contribution to design the interleaver of turbo codes.

这样交织延时大大降低，误码率性能也有所下降，但还是略优于其他交织器的性能，具有一定的实用价值。

Differential unitary space-time modulation in conjunction with noncoherent detection avoids MIMO channel estimation and is suitable for fast fading channels.

当采用较高电平调制时，在相同信噪比范围内，所提算法在几乎不损失误码率性能的同时，较原算法节省大于30%的比较次数。

Polarization encoding is a novel format and has more advanges such as natural power equalization, better polarization characteristics,less power penality,and so on,which can greatly reduce the nonlinear effects,suppress the PMD,and improve the spectrum efficiency,so its realization will accelerate the development of high-speed fiber communications.

偏振编码是一种全新的编码格式，它具有天然的功率均衡性、偏振特性好、功率代价小等优势，可大大降低系统中的非线性效应、抑制偏振模色散、降低误码率、提高谱效率，因此偏振编码通信的实现将推动高速光纤通信更快地发展。

Simulation shows that at a bit error probability of 10^(-7) the suggested codes gain 3~6 dB over uncoded transmission.

仿真结果显示当误码率为10^(-7)时，其编码增益相对于未编码增加了3至6dB。

Simulation results show that the new detectors have a significant performance gain over basic group-based MAP algorithm in uncoded systems and have a faster convergence in coded systems.

仿真结果表明在未编码系统中改进的分组检测方法能够显著地提高系统误码率性能，在编码系统中能够加快整个系统的收敛。

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。

Curves for the BER are obtained based on the derived SNR at the output of the equaliser.

误码率曲线的基础上得到的衍生的输出信噪比的扳平。

For high performance,concatenated coding is often used in the data communication system.

在数字通信系统中，为了保证通信的高质量，在信道中采用了各种编码来降低误码率。

For alternative radio receivers the quality may be an error rate estimate of a demodulated signal.

另一无线电接收机的质量是解调信号的误码率估值。

In the original system, there are many problems such as the communication distance between the tire module and the central monitoring module is too close, the eradiating power of the UHF transceiver is not enough, the error rate is too high and the data information is lost in high frequency and so on.

针对原有系统存在的轮胎检测模块和中央监视器模块之间的通信距离过短，信号的发射功率不足，误码率过高，数据信息频繁丢失等诸多问题，设计可行的解决方案。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。