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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
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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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16psk通信系统的信噪比与误码率计算并绘图-16psk communication system signal to noise ratio and bit error rate calculation and mapping
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产生一段随机四进制信号，对其进行QAM调制后，送入加性高斯白噪声信道传输，用加法运算在已调信号叠加白噪声，模拟加性高斯白噪声信道对信号传输的影响，在接收端对信号进行相应解调，并与原始信号比较计算误码率。改变误差白噪声的功率，绘制信噪比与误码率曲线。并与同组其他同学的性能曲线比较各种调制方式的性能优劣。-For some randomly generated four-band signal, after its QAM modulation, into the additive white Ga
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Simulation of a baseband QPSK mod/demod:
TX : a pseudo random bit stream generation, Serial to parallel conversion, QPSK Mapping (Gray coding), Signal power computation
Channel : AWGN channel
RX: Soft Demapping / Hard Demapping, Plot constellat
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Codes".
Huffman coding uses a specific method for choosing the representation for each symbol, resulting in a prefix code (sometimes called "prefix-free codes") (that is, the bit string representing some particular symbol is never a prefix of th
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16QAM的matlab仿真,非常有用,包括Bit mapping,modulation and demodulation,Bit demapping,Parallel to serial conversion,Bit error ratio-16QAM the matlab simulation, very useful, including Bit mapping, modulation and demodulation, Bit demapping, Parallel to serial
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用Matlab对通信系统中的ask,psk,fsk,dpsk等等调制解调方式做了仿真，并计算作图比较其误码率。-Communication systems using Matlab on the ask, psk, fsk, dpsk etc. modem to the way the simulation, and calculated to compare the bit error rate mapping.
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在理解RS码编译码原理的基础上使用Matlab或VC进行编程，首先产生一段随机序列，即原始的发送比特流，然后对该信号进行RS编码、BPSK映射、加噪、解映射及RS译码，得到恢复的数据。-Decoding RS codes in understanding the basis of the principle of programming using Matlab or VC, the first generating a random sequence, that is, send the or
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THIS A MATLAB CODES TO SIMULATE 16 QAM
Bit Error Rate for 16-QAM modulation using Gray modulation mapping-THIS IS A MATLAB CODES TO SIMULATE 16 QAM
Bit Error Rate for 16-QAM modulation using Gray modulation mapping
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TD-SCDMA HSDPA 下行HS-DSCH HS-SCCH HS-SICH物理层编码，包括CRC编码，turbo编码，bit分离，速率匹配，bit加扰，交织和物理信道映射的MATLAB仿真。main文件为Encode_HS_SCCH.m Encode_HS_DSCH.m Encode_HS_SICH.m-TD-SCDMA HSDPA downlink HS-DSCH HS-SCCH HS-SICH physical layer coding, including the CRC encod
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matlab - mapping 4 bit image to 8 bit
and 8 bit image to 4 bit
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QPSK + 16QAM mapping using gray coding with computing Bit Error Ratio
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