衰落中的

Moreover, the algorithm can converge to the desired userunder discretional initial conditions, and the performance of convergence andsteady-state behavior of the algorithm are more better than that of otheralgorithms.Therfore the proposed algorithm is a practical and valuable method in thefuture.

由于其步长的自适应变化，使得它在多径衰落信道中，依然具有较好的性能，而且在任意初始条件下，都能够正确收敛到目标用户，收敛速度更快，稳态性能更好，具有一定的实用性。

The third chapter analyzes the change of federal party competition pattern in the course of decline of Congress system.

第三章主要从印度人民党的崛起和人民党的短暂历史，分析国大党一党独大体制衰落过程中联邦政党结构的变化。

He thought that the decline of Sparta resulted from the disobedience of Spartans for Lycurgus's laws very much who was corrupted exotic factors.

在《拉栖代梦人的政制》中，色诺芬非常推崇来库古立法，认为斯巴达的衰落是斯巴达人受外来腐化不遵守来库古所订立的法律所致。

Transmit diversity is a hotspot in MIMO research. In fading channels, the relation of open loop transmit diversity and close loop transmit diversity and their performance contrast has not been studied.

发射分集是多天线MIMO系统的研究热点，在衰落信道中开环和闭环发射分集的关系，不同信道状态条件下的性能对比还缺乏深入研究。

This dissertation comprehensibly researches the performance of hybrid DS/FH spread spectrum communication systems, operating in a combined additive white gaussian noise , multiple access interference, and channel fading, particularly operating in hostile interference (partial band interference and multitone jamming). At the same time, the dissertation investigates performance of forward error correction coding and diversity technology against channel noise.

本文以此为背景，较为详细地研究了在信道中出现各种噪声干扰（高斯白噪声、多址干扰和信道衰落），特别是敌方的人为干扰（部分带宽噪声干扰和部分带宽多频干扰）时，混合DS/FH扩频通信系统的性能，以及前向纠错信道编码和分集技术对混合扩频通信系统信道出现噪声干扰时系统性能的改进情况。

Using a three dimensional Markov chain, a nonsaturation throughput performance model was proposed for IEEE 802.11 Distributed Coordination Function in fading channel. The impacts of different factors, including bit error ratio, traffic loads and packet length, on the throughput of the system were analyzed using this model.

利用时间离散的三维马尔可夫链，建立了衰落信道中IEEE 802.11 DCF在非饱和状态下的吞吐量性能模型，分析了位错误率、传输负载和分组长度对系统吞吐量的影响。

In anFDD wireless system, the duplex spacing between uplink and downlink islarger than the coherence bandwidth of the mobile radio channel, thus theuplink and the downlink small-scale fading is uncorrelated. Moreover, thearray response is correlated with the frequency of the signal carrier. So it isimpossible to resue the uplink weights for downlink beamforming. As aresult, the application of smart antenna for the downlink is a difficult problem.

在频分双工系统中，由于上、下行载波的频率差大于相干频带，上、下行信道衰落是不相关的，而且阵列响应也与信号的载波频率有关，因此，上行信道不能直接用来估计下行信道，故智能天线应用于下行链路是一个难点。

In wireless broadband digital communication, Inter-Symbol Interference caused by time disperse of radio channel is one of main factors that limit bandwidth of communicated information and system performance of communication. In receiver, Orthogonal Frequency Division Multiplexing system can easily cancel ISI and equalize frequency-selective fadings that are both caused by time disperse of radio channel.

在这一系统中，无线信道时延扩展引起的符号间干扰是限制传输性能和信息速率的主要因素之一；而在消除符号间干扰和均衡由无线信道时延扩展引起的频率选择性衰落方面，正交频分复用(Orthogonal Frequency Division Multiplexing，OFDM)技术具有明显优势。

NARRATOR: In his lifetime, Hayek saw fasci* rise and fall, communi* come and go, and the end of his years in the intellectual wilderness.

旁白：哈耶克一生中经历了法西斯主义的发展和衰落，共产主义的诞生和衰微以及他晚年的思想荒野。

It was about the balance of power, disturbed for a century by Ottoman decline, Russian and Prussian growth and Franco-British rivalries.

这是一场关于权力均衡的战争，在一个世纪中由于土耳其帝国的衰落、俄国和普鲁士的不断强大以及英法对抗等因素而不断延续。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。