2_TDOA

实现完整的4CPM(h=1/2)调制解调程序，包括消息序列生成，串并转换，升抽样成形滤波，数字上变频，多项式非线性效应，AWGN信道，到接收端数字下变频，降采样，匹配滤波，接收端基带信号星座图。(Message sequence generation, serial-parallel conversion, up sampling shaping filter, digital upconversion, polynomial nonlinear effects, AWGN channel, to the receiver digital down-conversion, down-sampling, the matched filter, the receiving end the baseband signal constellation.)

从时域分析比较了ofdm和stbc与ofdm结合的性能差别(from time-domain analysis and comparison of OFDM stbc OFDM combined with the performance difference)

MIMO系统中基于压缩感知的有限反馈方法研究,D对研究有限反馈有很好的帮助。(MIMO systems with limited feedback based compressive sensing method study, D finite feedback of good help.)

这个程序除了接收机同步、信道编码没有加入外，基本上反映了一个OFDM系统的特性： 1. qpsk/16qam/64qam映射、解映射 2. OFDM调制解调（循环前缀，FFT等） 3. 非整数采样时刻多径时延的多径信道 4. Rayleigh或者Rician多径信道 5. 信道的连续时变（非block fading） 6. 线性插值信道估计 7. FFT变换域插值信道估计(In addition to this program receiver synchronization, channel coding have not joined, the basically reflect the characteristics of an OFDM system: 1. Qpsk/16qam/64qam mapping, mapping solution 2. OFDM modulation and demodulation (cyclic prefix, FFT, etc.) 3. Non- integer sampling instant multi-path delay of multi-path channel 4. Rayleigh or Rician multipath channel 5. a continuous time-varying channel (non-block fading) 6. linear interpolation channel estimation 7. FFT transform domain interpolation channel estimation)

开发的802 16e物理层上下行MAP解析,该程序已通过测试！严格按照802 16e协议开发的,()

说明：  qam调制误码率比较,包含对16QAM、32QAM、128QAM的误码率分析，并作出误码率比较的仿真图。(QAM modulation bit error rate comparison, including 16QAM, 32qam, 128QAM bit error rate analysis, and make a bit error rate comparison simulation diagram.)

OFDM调制发射和接收仿真，考虑两种调制方式，16qam及qpsk调制，使用LS信道估计和频域均衡(OFDM modulation transmission and reception simulation, considering two modulation modes, 16QAM and QPSK modulation, using LS channel estimation and frequency domain equalization.)

仿真源码包括了多层异构蜂窝网络中基于齐次泊松点过程（HPPP）的建模方法，一篇介绍该模型的12年发表在IEEE trans的论文。以及传统六边形建模方法和信道增益矩阵的计算。(Simulation source code, including the multi-heterogeneous cellular networks based on homogeneous Poisson point process (HPPP) modeling method, a description of the model' s 12-year papers published in IEEE trans. And traditional modeling methods and hexagonal channel gain matrix calculation.)

说明：  本程序代码包含了 SC SCL BP SCAN和SSC译码算法，以及各种编码算法GA，BA....*** 编程语言风格为C++，研究polar的和我一样渣渣的研一萌新点进来have a look 感谢大佬pan jianpeng ，感谢共享源码(This program code includes SC SCL BP SCAN and SCC decoding algorithm, as well as various coding algorithms GA, BA... *** Programming language style is C++, research polar and slag like me have a look Thank you pan jianpeng, thank you for sharing the source code)

说明：  利用优化算法实现稀布阵列天线方向图分析与综合(Pattern synthesis of array antenna using optimization algorithm)