在衰落

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。

A basic form of classic narrative as it was, the linear narrative has now become a derogative term in the discourse of literary criticism, and its essential merit is by and large ignored and depreciated.

争论的结果已经明了：线性叙事在小说创作与小说批评中衰落了，而反线性叙事则成为上述领域的霸权话语。

Thirdly, the maximum-likelihood CFO estimation algorithms based on null-subcarrier are investigated, and it is shown that the maximum-likelihood CFO estimation algorithm based on equispaced null-subcarriers is equivalent to the CFO estimation algorithm utilizing the correlation of repeated training sequences.

进一步分析了在频率选择性衰落信道下，空载波和信道零点的数目与位置对基于空子载波的载波频偏估计算法可辨识性的影响。

The Jewish *munity of Harbin was lively and sparkling, reaching its peak of activity between the two World Wars and then thinning out to nonexistence.

哈尔滨的犹太社区一度生机勃勃，光芒耀眼。特别是在两次世界大战之间，锡安主义运动还曾经达到顶峰，随后却衰落了。

By using second order channel statistical information, a novel noncoherent communication method for space corrented fast fading channel is proposed.

利用信道的统计相关信息，提出一种在快衰落相关信道中非相干通信的新方法。

Multiple symbol decision-feedback detection and noncoherent sequence detection, the performance of the proposed algorithms are much superior to that of MS-DFD and a little inferior to that of NSD, while the complexity is lower than that of MS-DFD in most cases and significantly lower than that of NSD.

与现存的两种连续衰落假设下的典型算法，即多符号判决反馈检测与非相干序列检测相比，所提算法的性能明显优于MS-DFD，接近NSD的性能，但其平均复杂度远低于NSD，在大多数情况下明显低于MS-DFD的复杂度。

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。

SORTING OUT POSSIBLE EXPLANATIONS for the fur seal decline is as difficult as disentangling the fishing nets that often snag driftwood and entrap overcurious pups.

排序在可能的解释之外为毛皮封印衰落象解开是一样困难的snag 漂流木头和经常坑害overcurious 小狗的捕鱼网。

But if the principle of the pretension be admitted, no one can reasonably object to its being acted on in the sense of the majority, or other preponderating power in the country; and all persons must be ready to conform to the idea of a Christian commonwealth, as understood by the early settlers in New England, if a religious profession similar to theirs should ever succeed in regaining its lost ground, as religions supposed to be declining have so often been known to do.

但如果承认了它所据以肆行僭越的原则，那就没有理由还能反对它在国内多数人或者其他优势力量的情绪中受到影响；而如果类似新英格兰早期定居者所抱的一种宗教信仰竟有一天能象所谓衰落中的宗教往往做到的那样成功地恢复了它所失去的阵地，那么，我们大家就只好准备接受一个如他们所理解的基督教国家的观念。

Through the last 20 years the Danish painter Ib Monrad Hansen has been working on one and the same project: to find out how to open for the representative potentials of painting, and at the same time avoid that the painting acts regressively.

20年来的丹麦画家蒙拉德一直保持在同一个项目的工作：他尝试着最大限度地打开绘画潜力的同时避免架上绘画行为衰落。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。