| 1. | - yeah , it definitely wasn ' t a slow fade . - no , it sure wasn ' t
-是啊，不过肯定不会慢慢变淡-的确不会 |
| 2. | Yeah , it definitely wasn ' t a slow fade . - no , it sure wasn ' t
是啊，不过肯定不会慢慢变淡-的确不会 |
| 3. | - that it would slowly fade out . - lt definitely wasn ' t a slow fade
-感觉会不会慢慢的就变淡了-是啊，而且肯定不会慢慢变淡 |
| 4. | That it would slowly fade out . - lt definitely wasn ' t a slow fade
. . .感觉会不会慢慢的就变淡了-是啊，而且肯定不会慢慢变淡 |
| 5. | Yet until such changes are made , banks , once a fixture on the u . s . financial landscape , will continue their slow fade
但是如果不做这些改革，一度在美国金融地图上最显眼的银行业，恐将持续地失去可见度。 |
| 6. | Two simulation algorithms of realization channel characteristic are analyzed emphatically : shaping of slow fading with correlation and generation of frequency - selected multipath fading
重点分析了实现信道特性仿真的两种算法：慢衰落的相关性整形和频率选择性多径衰落。 |
| 7. | As the application of rake receivers with multitaps is widely used in cellularcdma systems for exploiting path diversity , the closed - loop power control schemesshould make use of the multitap rake receivers for tracking the power variation dueto path loss , slow fading , and fast fading
同时,本文给出的自适应变步长闭环功率控制算法利用rake接收机跟踪信道的变化,与传统的固定步长闭环功率控制相比获得了较小的ebi0标准差。 |
| 8. | 3 a novel recursive least - square ( rls ) blind space - time receiver algorithm based on the constrained condition , which can completely avoid the matrix inversion introduced into by constraints ( comparing with the normal rls ) , is proposed for multi - path slow fading cdma channels . the computational complexity of this method is not only lower than that of the normal rls , but also lower than that of both lms and ls blind space - time receiver methods that are realized based on the rosen ' s gradient projection . and the speed of convergence of the presented rls blind space - time receiver algorithm is better than that of both lms and ls blind space - time receiver methods
3 、针对多径慢衰落信道下ds - cdma盲空时接收机中线性约束二次规划问题提出一种新的递归最小二乘算法，该算法完全避免因约束而引进的矩阵求逆运算(相对于常规的递归最小二乘算法) ，不但运算量比常规的要低，而且比基于rosen梯度投影实现的最小均方( lms )与最小二乘盲空时接收机算法还低，且收敛速度比基于rosen梯度投影实现的最小均方( lms )与最小二乘盲空时多用户检测都好，将提出的新的递归最小二乘算法与提出的数据选择方案结合起来可以进一步降低其运算量，具有很大的实用价值，最后通过仿真实验进一步分析了其性能。 |
| 9. | Contributions in this paper mainly sh ow four points : 1 the structure characteristic of the received ds - cdma signal is analyzed in the presence of multi - path slow fading effect case for wireless mobile communication . according to this characteristic , four data - selected schemes based on chip - matched filter are presented from the perspective of energy and structure of signal . and the impact of these schemes on multiple - access interference ( mai ) and inter - symbol interference ( isi ) is analyzed
本文的主要贡献在于四个方面： 1 、针对无线移动通信系统中广泛存在多径慢衰落效应的情况，分析了ds - cdma系统中接收信号本身的结构特征，根据这个特征，在匹配滤波的基础上，从能量与信号结构的角度提出了四种不同的数据采用方案，并分析了不同数据方案对多址干扰与码间干扰的影响。 |
| 10. | At first , wireless channel and characteristic of radio propagation are investigated in order to learn them . then smart antenna , which will be adopted widely , is researched . finally , the space - time receiver technology under multipath slow fading channels and multipath fast fading channels is studied emphatically , this content is the core of this paper
因此，本文首先研究了无线信道及其电波传播特性，以期对无线移动通信的无线信道有充分的认识；接着研究了必将广泛被采用的智能天线技术(它能引进空间分集，抗信道衰落，并提高系统容量) ；最后，基于对信道的认识并把智能天线技术结合，着重研究了在多径慢衰落信道与多径快衰落信道下的空时接收机技术，这部分内容是本文核心。 |
