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mapping_sequence
- 将带发送数据序列映射为格雷码，相邻的码元只有一个符号不同。-mapping the deta serial into GeLei code,whose closed code only one symbol is different
LLR_demodulation
- 将多级调制时, 映射到同一符号的不同比特具有不同可靠性的特性引入软输出高阶解调算法中, 推导出一套 简单易行的通用算法, 使得在任何格雷映射方式下, 都能够使用一组相同的两级递推公式计算比特软判决信息。提供了一种 具有低复杂度的通用的高性能软输出高阶解调算法。-Multi-level modulation, the symbols are mapped to the same bit different with differe
grayber
- 16psk格雷映射的误码率仿真,已通过matlab仿真，绝对好用- Bit Error Rate for 16-PSK modulation using Gray modulation mapping you can know 16psk modulation and gray modulation and apply them in your program
qm16
- 数字通信中的16QAM映射，采用格雷码编码，包括星座图的显示，简单明了清晰，由此可以退出64,128QAM的matlab编码-Digital communication 16QAM mapping, the use of Gray coding, including the constellation display, simple clear, it can be out of the 64,128 QAM matlab code
QAM
- QAM是一种矢量调制，将输入比特先映射（一般采用格雷码）到一个复平面（星座）上，形成复数调制符号，然后将符号的I、Q分量（对应复平面的实部和虚部，也就是水平和垂直方向）采用幅度调制，分别对应调制在相互正交（时域正交）的两个载波（cos wt和sin wt）上-QAM is a modulation vector, the first mapping the input bits (Gray code commonly used) to
QPSK_AWGN_GRAy_ErrorCalculate
- 信息经格雷码映射，进行QPSK调制并通过AWGN信道发射，在接收端进行QPSK解调，并统计误符号率和误码率。-Information on the Gray code mapping, QPSK modulation and emission through the AWGN channel, QPSK demodulator at the receiving end, and the statistical symbol error
G4_QPSK
- MIMO系统瑞利信道下G2仿真，采用QPSK格雷码映射以降低误比特率-Rayleigh channel, MIMO system, the G2 simulation
QAM_256map
- 这是一个实现256QAM星座映射的代码，使用格雷码编码方法。-This is an implementation of 256 qam constellation mapping code, the use of gray code encoding method.
PAM4_tx
- 实现PAM4的光发射机，包括格雷编码、FEC、PAM4映射和PAM4解映射等，适合光纤通信学习者(The implementation of pam4 optical transmitter, including gray coding, FEC, pam4 mapping and pam4 demapping, is suitable for optical fiber communication learners)