平衰落

平衰落信道下ML和MAP信道估计与导频符号长度的关系性能比较

Performance Compare of the Relationship between ML and MAP Channel Estimation with Pilot Symbol Length in the Flat Fading Channel

平衰落信道CSI不理想时的M-QAM优化方法

M-QAM optimization in flat fading channels with imperfect CSI

瑞利平衰落信道中跳频GMSK信号的接收

A GMSK Receiver for Frequency-hopped System in Rayleigh Flat-fading Channel

文中主要研究瑞利平衰落信道下量化噪声对最大比合并（MRC）接收分集合并输出信噪比的影响。

This paper focuses on the influence of quantization noise in MRC combining in Rayleigh Flat-fading channel .

通过OFDM技术的频率分集技术，将频率选择性衰落信道转化为频率平衰落信道，有效地克服了符号间干扰，被认为是未来新一代移动通信的备选关键技术之一。

Through the frequency diversity technology of OFDM , frequency-selective fading channel can be converted into frequency flat fading channel , which can effectively overcome the inter-symbol interference . It is considered the key technologies for the next generation of mobile communication .

论文的第六章介绍了平衰落无线通信系统的发射分集技术，包括V-BLAST、D-BLAST、空时格码和空时分组码，并进行了大量的计算机仿真，以考察这些空时编码方案的性能。

In the sixth chapter we introduce the transmit diversity schemes including V-BLAST 、 D-BLAST 、 space-time trellis coding and space-time block coding .

正交频分复用（OFDM）技术通过把信号分流的方式调制在并行的子载波上，使得每一子载波上的信道近似为平衰落信道，从而有效抵消了信号的ISI。

In OFDM ( Frequency Division Multiplexing ) system , multi-carrier transmission technology can divide the signal stream to some carriers in parallel ; the channel in each carrier can be similar to flat-fading channel , so it can counteract the interference of ISI .

所以本文采用天线分集的方式来解决平衰落问题。

So antenna diversity must be used to solve this flat-fading prob - lem .

本文首先讨论了平衰落信道中的信号处理及检测技术。

We first focus our discussion on signaling and detection over flat fading MIMO channels .

平衰落信道中的空间特征估计算法及其在空分多址中的应用

Spatial Signature Estimation Algorithm in Flat Fading Channel and Its Application to Space Division Multiple Access

首先，我们回顾了提高平衰落无线通信系统性能的发射分集技术。

First , the dissertation provides a review of transmit diversity to improve the performance for frequency-flat fading wireless communications .

本文将平衰落信道的衰落过程进行小波分解与建模，在此基础上提出一种采用顺序蒙特卡罗算法的盲均衡接收机，并给出了仿真结果以证明此接收机的优异性能。

While this dissertation will use wavelet analysis to decompose fading-process , and provide wavelet model of flat fading channel , then propose a new blind receiver based on Monte carol algorithm .

利用计算机随机模拟了平衰落与带内色散及相关系数随气象条件的变化关系，得到了一些新的、较为重要的结论。

The changes of flat fading and in band amplitude dispersion with the atmospheric conditions are oh tamed by computer radom simulation . meanwhile , some new and important conclusions are abc given .