误差均方

The frequency fluctuation of the stabilized laser is held within 5.6 MHz and better than 160 MHz of the free-running laser. The root of Allan variance of error signals reaches a minimum of 1.66×10 -11 when averaging time is 64 s, well within the precision needed for application.

稳定后的激光频率波动小于5.6MHz，相对于自由运转时的160MHz有了很大提高，而误差信号的Allan方差均方根在平均积分时间为64s时达到最小值1.66×10-11。

On the other hand, we also design two types of MMSE equalizers for DS-CDMA downlink systems.

另一方面，我们也针对最小方均误差等化器当中的反矩阵问题进行讨论。

Multi-input multi-output system ; perfect space-time block codes ; minimum mean-square error decision feedback equalizer ; Fano algorithm

多输入多输出系统；完美空时分组码；最小均方误差—判决反馈均衡； Fano算法

The performance of PDA-MUD is close to the optimal multi-user detector, but computational complexity of PDA-MUD is higher than the linear minimum mean-square error multi-user detector.

虽然使用机率资料连结演算法之多使用者侦测器可以得到近乎最佳化多使用者侦测器的效能，但其计算复杂度相较於最小均方误差多使用者侦测器仍然偏高。

In this paper, a Minimum Mean Square Error based joint multi-cell channel estimation algorithm is proposed. By including the strong interfering users of adjacent cells into the channel estimation matrix, the noise power is significantly reduced which guarantees more precise channel estimation.

该文提出基于最小均方误差准则的联合多小区信道估计算法，由于改变了信道估计矩阵的结构，将邻小区强干扰用户也作为可以检测的用户信号来处理，降低了信道估计中噪声功率。

Theoretical analysis and simulation results show that the both the DPSO-DA and the HDPSO-DA acquire about 3 dB and 5 dB gain over the OSIC algorithm based on the minimum mean square error criterion at a bit error rate of 10^(-3) and have lower computational complexity.

理论分析和仿真结果表明，当误码率为10^(-3)时，与基于最小均方误差准则的串行干扰抵消算法相比，DPSO-DA和HDPSO-DA可获得约3dB和5dB的增益，且具有更低的复杂度。

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。

We analyze the BER performance of PMBT with zero forcing, minimum mean square error receiver and optimum bit allocation and also compare the performance with Generalized MRT.

我们将使用零强制、最小均方误差接收器和最佳位元分配的PMBT系统来做位元误差率的分析并且和广义的最大传输率系统的效率做比较。

The quantizer can perform dynamic quantization for wavelet coefficients after the determination of the best quantization steps {qi} that minimize the average mean square error at a given bit rate.

在为DWT 系数确定好一组使给定码率下均方误差最小化的最佳量化步长{qi}后，该量化器将能够实现小波系数的动态量化。

Based on the oversampling of OFDM frequency response, this paper proposes a method called LS+LPF.

利用在OFDM系统中信道的频域响应是过采样的特性，提出了LS+低通滤波器的方法，将其与带低通滤波器的sisin(x/x插值法、cubic插值法和Winner插值法进行了信道估计的均方误差和无编码的误比特率的仿真结果进行了比较。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。