OFDM_receivers

BCH编码的matlab程序，实现BCH（1023，1013）(BCH coding matlab program to achieve the BCH (1023,1013))

说明：  该软件的处理类似于短时傅立叶变换（STFT），但应用了更长、更重叠的分析/合成窗口，使时频处理从根本上对混叠具有鲁棒性。这种差异与非常活跃的时频处理技术有关，例如Dirac或优化的自适应波束形成器。(The software does processing similar to the short-time Fourier transform , but applies the longer and more overlapping analysis/synthesis window to make the time-frequency processing fundamentally robust for aliasing.)

3g无线网络规划方法，WCDMA无线小区规划(3g wireless network planning, WCDMA Cell Planning)

matlab实现STBC的MIMO-OFDM的系统级仿真(Simulation of STBC MIMO-OFDM System with MATLAB)

说明：  有助于学习LS信道估计的编码,以及mmse和LMMSE(ls chanel MMSE CHANEL LMMSE CHANEL)

16QAM信号最佳接收机，包括信号生成（+成型滤波）、上载波、过信道、下变频、匹配滤波、定时同步等过程(the optimal receiver for 16QAM, including signal source( shaped filter),modulation,AWGN channel, matched filter, timing sychnoization and so on)

无线信道建模一直以来都很复杂，而且不同场景下的模型差异较大，这是一本专门讲解无线信道建模方法的书籍配套的matlab例程(Channel modeling has been very complex, and the model under different scenarios are quite different, which is the one devoted to channel modeling method books matching matlab routines)

说明：  OFDM技术 北京邮电大学内部讲义 内部资料(OFDM 北邮内部讲义)

滤波器输入和输出的相干函数与互不相干函数的比较。(Filter input and output of the coherence function with separate function comparison.)

说明：  利用通信系统中调制信号的循环平稳特性,对频谱空洞进行检测,提升频谱感知技术在低信噪比下的性能。实验结果表明:与传统能量检测方法相比,采用循环特征检测方法改善了认知无线电中频谱空洞的检测能力。(Based on the cyclostationarity of modulation signals, spectrum hole is detected, aiming at the improve- ment of the performance of spectrum sensing in low SNR situation. The results show that comparing with the tra- ditional energy detection technique, cyclostationarity-based spectrum sensing technique has greatly improved the detective ability in cognitive radio.)