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WLAN仿真-发送机
wlan No Comments
设置完系统参数后,开始产生发送数据。
1. 产生随机的发送bit(tx_bits),这里不考虑信道编码。
2. QAM映射
3. 将数据映射到不同载波,形成OFDM符号
4. 产生pilot,并将pilot插入OFDM符号中
5. 加入dc和guard子载波
6. 进行ifft,将频域信号变到时域,并加入循环前缀
7. 对信号进行overlap window
8. 在时域产生short preamb
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OFDM main program generates random binary bits, ifft and cyclic prefix, user can define parameters and calculates BER
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国外的详细的OFDM设计过程文档,对学习OFDM非常有帮助,并且有仿真结果。-This report discusses the design and implementation of an OFDM modem for a simplex communication
between two PCs over a frequency selective channel. First a brief introduction is
provided by explaining the b
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简单ofdm系统,利用bpsk调制,循环前缀,以达到抗干扰的能力-Simple ofdm system using bpsk modulation, a cyclic prefix, in order to achieve the anti-jamming ability
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在ofdm系统中,该步骤实现ofdm的调制和解调,即对信号进行加循环前缀,串并变换等步骤-In ofdm system, the steps to achieve ofdm modulation and demodulation, the signal is added to the cyclic prefix string and transform other steps
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CYCLIC PREFIX IN OFDM
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该程序基本涵盖了OFDM-16QAM系统传输的全过程,除了调制解调外,有添加循环前缀,加窗的过程。生成图像有各个阶段的时域、频域图,以及发射前后的星座图。-This basically covers the whole process of OFDM transmission- 16 qam system, in addition to the modem, have add cyclic prefix, plus the window procedure. Generate the image
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在ofdm的系统中,为了减少误差 加上了循环前缀的程序 以及一个毫米波mimo系统的混合预编码处理方式的介绍-Ofdm system in order to reduce the error plus the cyclic prefix and the procedures described mixing precoding processing mode of a millimeter wave system mimo
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matlab中ofdm的方针,实现了其中的关键技术,信道估计,循环前缀,m序列同步-The principle of ofdm in matlab, the realization of the key technology, channel estimation and cyclic prefix, m sequence synchronization
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