This paper presents a RAKE-based STBC scheme used in multi-path fading environment.
文章在多径信道下，提出了一种基于RAKE接收机的空时分组编码(STBC)方案。
The shadow affect is logarithmic normal distribution, and the multi-path fading is Rayleigh distribution.
阴影效应服从对数正态分布，而多径衰落服从瑞利分布。
Based on this, this paper focused on the UWB path loss model and the multi-path fading model in mine environment.
在此基础上着重研究了矿井环境下的UWB路径损耗模型和多径衰落模型。
As an efficient data transmission technique, OFDM can resist multi-path fading and realize high data rate transmission.
作为一种高效的数据传输技术，正交频分复用(OFDM)技术具有良好的抗衰落能力，实现数据的高速传输。
Spreading code design and joint detection are two efficient ways to increase CDMA system capacity in multi-path fading channels.
在多径衰落信道CDMA系统中，扩频码设计与联合检测为提高系统容量的两个重要手段。
The first chapter introduced the characteristics of the wireless channel, the small-scale fading model, multi-path fading model and WSSUS channel model.
本文第一章绪论首先分析了无线信道的特性，介绍了小尺度衰落模型，多径衰落模型以及WSSUS信道模型。
In this paper, we analyze the BER performance of pilot symbol assisted two-dimensional spread spectrum systems with coherent demodulation in multi-path fading channels.
在多径衰落信道中，本文分析了导引辅助的二维扩频相干解调的误码率性能。
To solve the accuracy degradation of wireless location that results from multi-path fading, the paper improves the traditional narrow correlation technology using Teager-Kaiser (TK) operator.
为了解决多径干扰对无线定位精度的影响，该文在传统的窄带相关技术的基础上，利用TK算子对其进行改进。
The advantages of CDMA communication system in 3g are large capacity, soft capacity, soft handover, higher spectral efficiency and the ability to resist the effects of multi-path fading, and so on.
CD MA通信系统由于具有容量大、软容量、软切换、频率利用率高、抗多径衰落能力强等优点而在第三代移动通信系统(3 G)中得到广泛应用。
The advantages of CDMA communication system in 3g are large capacity, soft capacity, soft handover, higher spectral efficiency and the ability to resist the effects of multi-path fading, and so on.
CD MA通信系统由于具有容量大、软容量、软切换、频率利用率高、抗多径衰落能力强等优点而在第三代移动通信系统(3 G)中得到广泛应用。
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