作者: Yong Soo Cho
目录
Preface.
Limits of Liability and Disclaimer of Warranty of Software.
1 The Wireless Channel: Propagation and Fading.
1.1 Large-Scale Fading.
1.1.1 General Path Loss Model.
1.1.2 Okumura/Hata Model.
1.1.3 IEEE 802.16d Model.
1.2 Small-Scale Fading.
1.2.1 Parameters for Small-Scale Fading.
1.2.2 Time-Dispersive vs. Frequency-Dispersive Fading.
1.2.3 Statistical Characterization and Generation of Fading Channel.
2 SISO Channel Models.
2.1 Indoor Channel Models.
2.1.1 General Indoor Channel Models.
2.1.2 IEEE 802.11 Channel Model.
2.1.3 Saleh-Valenzuela (S-V) Channel Model.
2.1.4 UWB Channel Model.
2.2 Outdoor Channel Models.
2.2.1 FWGN Model.
2.2.2 Jakes Model.
2.2.3 Ray-Based Channel Model.
2.2.4 Frequency-Selective Fading Channel Model.
2.2.5 SUI Channel Model.
3 MIMO Channel Models.
3.1 Statistical MIMO Model.
3.1.1 Spatial Correlation.
3.1.2 PAS Model.
3.2 I-METRA MIMO Channel Model.
3.2.1 Statistical Model of Correlated MIMO Fading Channel.
3.2.2 Generation of Correlated MIMO Channel Coefficients.
3.2.3 I-METRA MIMO Channel Model.
3.2.4 3GPP MIMO Channel Model.
3.3 SCM MIMO Channel Model.
3.3.1 SCM Link-Level Channel Parameters.
3.3.2 SCM Link-Level Channel Modeling.
3.3.3 Spatial Correlation of Ray-Based Channel Model.
4 Introduction to OFDM.
4.1 Single-Carrier vs. Multi-Carrier Transmission.
4.1.1 Single-Carrier Transmission.
4.1.2 Multi-Carrier Transmission.
4.1.3 Single-Carrier vs. Multi-Carrier Transmission.
4.2 Basic Principle of OFDM.
4.2.1 OFDM Modulation and Demodulation.
4.2.2 OFDM Guard Interval.
4.2.3 OFDM Guard Band.
4.2.4 BER of OFDM Scheme.
4.2.5 Water-Filling Algorithm for Frequency-Domain Link Adaptation.
4.3 Coded OFDM.
4.4 OFDMA: Multiple Access Extensions of OFDM.
4.4.1 Resource Allocation – Subchannel Allocation Types.
4.4.2 Resource Allocation – Subchannelization.
4.5 Duplexing.
5 Synchronization for OFDM.
5.1 Effect of STO.
5.2 Effect of CFO.
5.2.1 Effect of Integer Carrier Frequency Offset (IFO).
5.2.2 Effect of Fraction
2021-10-09 16:05:59
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MIMO_OFDM-《MIMO-OFDM无线通信技术及MATLAB实现》的源代码
2021-10-09 09:03:23
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导频符号位置
导频符号辅助方法是在发送端的信号中某些固定位置插入一些已知的符号和序列，在接收端利用这些导频符号和导频序列按照某些算法进行信道估计。
在多载波系统中，通常在时间轴和频率轴两个方向同时插入导频符号，在接收端提取导频符号估计信道传输函数。只要导频符号在时间和频率方向上的间隔相对于信道带宽足够小，就可以采用二维内插滤波的方法来估计信道传输函数。
2021-10-08 09:55:25
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802.11，802.11a OFDM MATLAB仿真代码。802.11a OFDM MATLAB仿真代码
2021-10-07 21:39:25
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此代码基本上计算 OFDM 系统的 BER。 ifft 大小为 64 .16-QAM 是调制技术，卷积编码率 1/2 用作编码方案。
2021-10-05 18:38:18
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频率同步是MIMO-OFDM同步技术必须解决的问题之一,但是传统的基于ML算法的频率偏移估计条件要求苛刻,计算复杂,因此对CFO简单算法的探究势在必行。为此提出一种基于LS算法的频率偏移估计,并将其性能与基于ML的频率偏移估计的性能进行比较。仿真结果表明,LS算法性能等同于ML算法性能。基于LS算法的简单性和使用条件的低约束性,可使用LS算法获得和ML算法相同的频偏估计。
2021-10-05 11:36:15
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