| 1. | How to optimize dapsk constellations is analyzed and an optimization algorithm is proposed
提出了星型qam调制星座图的优化方法。 |
| 2. | An atm term . carrierless amplitude / phase modulation with 64 constellation points
异步传输模式术语。采用64点星座图的无载波调幅调相码。 |
| 3. | The worst way to miss someone is to be sitting right beside them knowing you can " t have them
星座图失去某人，最糟糕的莫过于，他近在身旁，却犹如远在天边。 |
| 4. | I use special instrument to test items of modulator ( ( frequency 、 constellation ) , all up to the anticipated performance , so the system could be made into asic which could be served to the digital society
整个设计利用专用测试仪对频谱、星座图和其它各项发射指标进行测试,均达到预想效果,所以该fpga系统可以作为进一步进行流片,成为专用芯片,更好的服务于数字社会。 |
| 5. | Meanwhile i give analysis method of constellation map . to update system , system optimization direction is taken as the most important thing , such as choice of modulator parameter , reduce power dissipation , improve circuit work frequency ,
同时给出星座图分析说明;最为重要的是提出系统优化的方向,如调制参数的选择、如何降低功耗、如何提高电路工作频率,为系统的升级做了规划。 |
| 6. | With criterion of minimized average energy and criterion of maximized minimum euclidean distance as the basic policies , we determined the optimization mechanism of star - qam constellation in ofdm system with fading channel and using quasi - coherentand demodulation
我们以平均能量最小以及最小欧氏距离最大为原则，确定了在衰落信道下ofdm系统中采用准相干解调时，星型qam调制星座图优化的方法。 |
| 7. | For the digital modulation recognizer , the blind identification and equalization algorithm based on second - order statistics is applied to equalize the received signals firstly , and then the modulation type used can be figured out according to the shape of the rebuilt constellation
对于数字调制方式，本文首先采用基于二阶统计量的信道盲均衡算法对接收信号进行均衡，再利用信号星座图的形状判别具体的调制类型。 |
| 8. | Combined with the adaptive modulation and coding technology , this algorithm reallocates the residual power by effectively utilizing the discrete modulation orders according to the different priorities of sub - channels under the limitation of quality of service over the block fading channel
在满足服务质量要求的前提下充分利用星座图尺寸的离散性，将残余功率按照各子信道的不同优先级进行二次分配，并结合自适应调制编码技术改善低信噪比时的系统吞吐量。 |
| 9. | This area explores the scientific principles of optics and naked eye observation as related to astronomy . visitors can experiment with various optical components and look at distant objects through various telescopes . a fibre optics constellation showcase allows visitors to highlight various constellations from a control panel
可在此探索与天文观测有关的光学原理，试用不同的光学组件，并利用各种望远镜观看远处还可在光导纤维制成的星座图上，找出各个星座 |
| 10. | Rapid fading and so on . then we introduce the qam schemes of modulation about the design of parameters and constellations of qam and show the result of 8qam and 16qam . afterward we switch to the study of adaptive project , above all , we find that we can alter the parameter of nakagami fading channels to other fadings , and then we study three different adaptive projects
首先，阐述了移动通信中信道的衰落特性，分别分析信道的阴影衰落、慢衰落、快衰落几种模型；接着对qam的调制原理进行了分析，着重研究了这种调制方式的参数设置以及星座图的设计，文中示出了8qam和16qam的框图和波形情况。 |
