MIMO系统可以增加通信容量和频谱利用率，传统的检测V-Blast架构系统的算法无法很好的兼顾检测的性能和复杂度。本文提出了一种检测V-Blast系统的Sort-free QRD-M算法，阐述了其基本原理和搜索方式，对其和其它检测算法的检测复杂度和检测性能进行了仿真分析和对比。
2021-12-12 18:04:13
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协调多路输入下行链路考虑频偏和信道估计问题多输出正交频分复用系统。 该协调系统中存在多个载频偏移。 如果不对这些偏移量进行适当的补偿，则载波间干扰和小区间干扰都会降低系统性能。 在这里，我们应该采用并行干扰消除策略来迭代地减轻小区间干扰，并提出一个频率偏移估计器，由Hadamard积和泰勒级数近似扩展，以消除载波间干扰。 该方案比现有方法复杂得多。 此外，信道估计器对频率偏移具有鲁棒性，并且与这些传统方法的性能相当。
2021-12-12 17:39:07
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This document describes a MATLAB implementation of the 3GPP Spatial Channel
Model (SCM) [3GPP03]. The accompanying MATLAB code implements the system
level channel model described in Section 5 of [3GPP03], except the “far scatterer
clusters” feature from Section 5.5.2 and the intercell interference feature from Section
5.7. These features were left out of the implementation because they make certain
restricting assumptions about the network layout. The current implementation has no
built-in assumptions on network geometry and is hence usable for a variety of
simulation purposes.
The channel model takes the Multiple-Input Multiple-Output (MIMO) radio link
parameters, model configuration parameters, and antenna parameters as inputs, and
outputs the MIMO channel matrices. Channel matrices can be generated for multiple
BS-MS links with one function call. The output is a multi-dimensional array which
contains the channel impulse responses for a pre-defined number of radio links.
Mapping of MS-BS distances, array orientations and MS mobility parameters into the
SCM input format is left to the system simulator program. To make using of the model
easier default (random) parameters can be used. Channel convolution and other related
operations are beyond the scope of the implemented channel model.
The work presented in this report has been in most parts carried out in Workpackage 5
of the WINNER1 project [WIN]
2021-12-10 10:21:46
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利用MATLAB仿真了MIMO雷达系统，给出了MIMO雷达的capacity，以及在接收矩阵的奇异值分解的过程中的概率密度函数
2021-12-09 08:41:06
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