In addition, the structure of the eye as the physiological basis of photometry is analyzed, and the adaptability and the spectral luminous efficiency of the eye are also expatiated.
此外，在分析了光度学生理基础即眼睛的构造后，阐述了人眼的适应性和光谱光视效率等颜色感知的内在特性。
The area spectral efficiency of fully loaded cellular radio communication systems with variable-rate transmission is investigated.
研究采用可变速率传输的满负荷蜂窝无线通信系统的面积频谱效率。
The peak spectral efficiency of MMSE detectors decreases as the number of transmission antennas increases and increases as the number of receiving antennas increases.
线性MMSE检测子的峰值频谱效率与发送天线数有关，随发送天线数的增加而减小，随接收天线数的增加而增大。
This paper suggests a new method of rapid and automatic measuring the spectral diffraction efficiency curve of plane grating.
本文提出了一种快速自动测试平面光栅光谱衍射效率曲线的新方法。
A downlink power allocation scheme was developed to improve the spectral efficiency of distributed wireless communication systems (DWCS).
为了提高分布式无线通信系统(DWCS)的频谱效率，提出了一种下行功率分配算法。
Have analyzed and calculated the diffractive efficiency of the convex grating used in the hyper spectral imager.
对超光谱成像仪使用的凸面光栅衍射效率进行了分析计算。
This type of devices are required to have high-speed, high quantum efficiency and ultra-narrow spectral linewidth simultaneously.
这类器件需要同时具备高速、高量子效率、超窄光谱响应线宽的性能。
The author has described several key techniques for improving the capacity of CDMA digital celullar system, comparing to the spectral efficiency of FDMA and TDMA cellular system.
本文对照频分多址和时分多址系统的频谱效率，阐述了码分多址系统提高系统容量的几项关键技术。
Because of its high capacity and large spectral efficiency, V-BLAST system became popular in recent years.
近年来，由于该系统具备较高传输容量和频谱利用率，而受到了广泛关注。
This paper suggests a new method for rapid and automatic measuring the spectral diffraction efficiency of gratings.
提出了一种快速自动测试光栅光谱衍射效率的新方法。
For it can support higher rate data transmission and higher spectral efficiency.
它可提供高资料传输率和高频谱效益。
The characteristics of the dye laser, such as bandwidth, output power, efficiency, pulse duration, tuning range, spectral purity and frequency stability etc, are measured in details.
详细测量了染料激光的性能，如线宽、功率、效率、脉宽、调谐范围、光谱纯度和光束质量等。
There are two serious challenges in the future broadband wireless communication systems: multi-path fading in the wireless channel and spectral efficiency.
在未来的宽带无线通信系统中，存在着两个严峻的挑战：无线信道的多径衰落和频谱效率。
Compared with existing protocols, improved ones enjoy better performance in terms of spectral efficiency or transmission reliability, respectively.
相比原有协议，改进方案分别在频谱效率或传输可靠性方面有不同程度提升。
Simulation results indicate if the spectral efficiency is less than some certain value, the performance of amplify-forward and network coding forward are much better than that of direct transmission.
仿真实验得到：频谱效率小于一定值的情况下，利用放大和网络编码转发方式的性能大大高于直接传输方式。
A new method for measuring the spectral diffraction efficiency of plane grating with double-beam and single detector is suggested.
本文提出了一种双光束检测器测试平面光栅衍射效率的新方法。
It has increased connectivity and energy efficiency, improved network coverage, increased spectral efficiency and increased network capacity and so on.
它具有提高连接性能和能量效率、提高网络覆盖率、提高频谱效率、增加网络容量等优点。
Total users and spectral efficiency are studied under different proportion of total available bandwidth that is allocated to OCDMA and WDMA.
当可用带宽在WDMA与OCDMA之间不同的分配情况下，研究了该混合系统的总用户数和频谱效率。
The thickness of transmission-mode photocathode affects directly its photoelectric efficiency and spectral response.
透射式光阴极的厚度，直接影响光阴极的光电子发射效率和光谱响应。
On the other hand, power control and data rate allocation are two fundamental techniques for improving the spectral efficiency of wireless multimedia communications.
另一方面，功率控制、数据速度分配也是改善无线多媒体通信频谱利用率的两种基本技术。
LTE is aimed at providing the true global mobile broadband experience for users but also places high priority on improving spectral efficiency and reducing cost.
LTE致力于为用户提供真正的全球移动宽带体验，并且非常重视提高频谱的利用率和降低成本。
The results show that the high spectral beam combining efficiency for more beams can be obtained by this method, which provides a doable way for high power laser.
当光谱宽度较窄时，实现多路光束较高的合成效率是可行的，这为高能激光的获得提供了一种确实可行的方法。
Considering the practical case of delayed feedback environment, the closed-form expressions of system spectral efficiency under delayed channel were derived.
考虑反馈信道存在延时的实际情况，推导了系统在延时信道条件下的频谱效率表达式。
The proposed scheme may be used for increasing spectral efficiency and all-optical logic device.
此方案可以提高光传输中的频谱效率，以及应用在全光逻辑器件领域。
Conventional CDMA communication system has serious mutiple access interference (MAI), so the spectral efficiency and user capacity of channel is not maximum.
CDMA技术存在着严重的多址干扰(MAI)，使得信道的频谱效率未能达到最佳，系统的用户容量也不易达到最大。
Power Allocation(PA) and Space Time Codes(STC) are the key techniques of the Multiple-Input Multiple-Output(MIMO) to increase spectral efficiency and improve performance.
运用功率分配和空时编码技术可以在MIMO系统中提高频谱效率、改善系统性能。
Without any exhaustive numerical search, the ERQ can increase the spectral efficiency with the optimal continuous rate and power adaptation.
不需要大量计算，ERQ可以通过最佳连续码率和功率适应提高频谱效率。
MIMO relay channels, which combines the multiple antenna system and the relay, can improve the spectral efficiency of relay network.
MIMO中继技术结合了多天线系统和中继技术的优点，进一步提高了中继系统的频谱效率。
The growing demand for wireless services has created the need for improving the spectral efficiency of wireless communications over fading channels.
日益增长的无线业务需求要求提高衰落信道上无线通信的频谱利用率。
The growing demand for wireless services has created the need for improving the spectral efficiency of wireless communications over fading channels.
日益增长的无线业务需求要求提高衰落信道上无线通信的频谱利用率。
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