查询词典 SNR

The closed-form formula and its asymptotic form of system outage probability are derived, through which it is shown that the outage probability decreased by a factor of γ-KNtNr here γ denotes the average SNR

理论推导出中断概率的闭式解及其近似解，通过该近似解，可以得到中断概率以γ-KNtNr 的形式减少这里γ是平均信噪比SNR

Under the assumption that the channel state information was available only at the receiver,the capacity of MIMO systems in Rayleigh fading channel was investigated on the basis of information theory. Three special expressions for the MIMO capacity over ergodic flat fading channel were derived.An asymptotic formula for MIMO systems with equal number of transmit and receive antennas in small SNR was also given. Simulation results show that this approximation is relatively accurate.

以信息论的观点为基础，在假设信道状态信息仅收端已知的情况下，采用等功率发射方案，研究了瑞利衰落信道下MIMO系统各态历经信道容量，推导了三种特殊MIMO信道的各态历经信道容量表达式，以及在小信噪比下等收发天线MIMO系统的容量近似公式，并通过仿真进行了验证，仿真结果表明该近似公式比较精确。

This paper introduces a typical SNR estimation algorithm by the use of autocorrelation matrix singular value decomposition method.

主要介绍了一种典型的信噪比估计算法，并对信噪比的自相关矩阵奇异值分解估计法进行了研究。

The correspondence relationship between sea echo's SNR azimuthal distribution and the array's effective...

验证了回波信噪比随方位角的分布同雷达天线阵有效视角的对应关系

Apply to the function of SNR, the BER of system based on three schemes were analyzed and calculated.

应用建立的信噪比关系，分析和计算了基于三种不同方案的系统的误码率。

SNR maximum likelihood estimator based on data directed decision was evaluated first, and was concluded as a biased estimator. An unbiased estimator can be acquired through high order moments of received data.

摘要通过对基于判决反馈的信噪比最大似然估计推导过程的分析，得出：判决反馈最大似然估计得到的估计值是有偏估计；利用基带数据的高阶矩特性，可以获得渐近无偏估计。

With Boxcar dealing with the signal, the SNR was improved more.

同时采用Boxcar积分器对测量信号进行多次累加平均，进一步有效地提高了信噪比。

A detection method based on phase correlation uses a phase difference as the statistical quantum to detect double frequency carrier signal for BPSK DS/SS signals, it has the advantage of the rapid detection and can work well under low SNR condition.

基于相位相关的检测方法把相位差累积量作为检验统计量，通过检测载波二倍频信号来实现对BPSK DS/SS信号的检测，具有检测迅速并能够在低信噪比条件下工作的优点。

Simulation results show that it has good performance in channel capacity, especially in the case of high SNR.

仿真结果显示通过这种方法确定的天线子集在信道容量方面也有很好的性能，尤其在高信噪比情况。

The experimental results show that it achieves peak SNR of 80 dB, peak SNDR of 78 dB and dynamic range of 84 dB over a 1 MHz signal band-width when clocked at 128 MHz. It dissipates 9 mW from a 1.8 V supply.

芯片工作在1.8V电源电压和128MHz时钟频率，在1MHz的信号带宽内，调制器的动态范围为84dB，峰值SNR和SNDR分别为80dB和78dB，功耗为9mW。

Apllied the data of QuickBird-2——the highest resolution remote sensing,and based on the theory and methodology of fractal geometry,we have quantitatively studied remote sensing lineations in Gaolong gold deposit of Guangxi.

采用Quick Brid-2高分辨率卫星遥感数据，通过分形几何学的盒计维数法，定量研究广西高龙金矿区遥感线性构造。

So, sometimes, to change the color can not be your food (referring to the above-mentioned crustacean) has been a sign of boiling over.

所以，有时，来改变颜色，不能你的食物一直是沸腾了的迹象。