MATLAB Code for QPSK Modulation and Demodulation 因为在学习5G物理层，一直很忙，没有时间。最近稍有...
The code snippet provided in the previous section demonstrates how QPSK modulation and demodulation can be implemented using MATLAB. The code generates a random QPSK modulated signal, displays the signal in a scatter plot, and then performs QPSK demodulation to recover the original digital data. The...
ldpc_code = mod(Trans_data*G,2); %DSSSpseudoNumber =round(rand(1,fp)'); [dsss,converted,PN2] = func_dsss(ldpc_code,pseudoNumber,fp); Trans_QPSK = QPSK_modulation(dsss);%通过高斯信道Rec_QPSK = awgn(Trans_QPSK,SNR(i),'measured'); ReData = QPSK_demodulation(Rec_QPSK);%DSSSdsss2...
expand all Version History Introduced in R2012a expand all comm.QPSKDemodulatorissues a warning that it will be removed in a future release. Use thepskdemodfunction with the modulation order set to4to QPSK demodulate the input signal.
QPSK Modulation and Demodulation in the presence of transmitter and channel impairments File Exchange OFDM MULTIPATH CODE LTE GENERAL File Exchange 카테고리 Wireless Communications Communications Toolbox PHY Components Modulation QPSK Help Center 및 File Exchange에서...
1.算法仿真效果 matlab2022a仿真结果如下: 2.算法涉及理论知识概要 与很多的通信技术类似,扩频技术最初也应用于保密通信和制导系统等军事技术。除了在军事通信中的应用,扩频技术在无线通信领域也有发展。目前扩频通信技术已经在测距、卫星通信、GPS导航定位、移动通信、
Trans_BPSK = QAM64_modulation(dsss); %通过高斯信道Rec_BPSK = awgn(Trans_BPSK,SNR(i),'measured'); ReData = QAM64_demodulation(Rec_BPSK); %DSSS dsss2 = func_dsss2(ReData,pseudoNumber,fp); x_hat = round([dsss2+1]/2); [nberr,rat]= biterr(x_hat,Trans_data); ...
Decode a shortened TPC code and specify early termination of decoding. Apply QPSK modulation and output the approximate log-likelihood ratio signal obtained from QPSK demodulation. Begin by encoding a random bit vector using 2-D turbo product coding (TPC) with extended Hamming codes and extended BC...
QPSK调制:x[n] = r_I[n] + j*r_Q[n] 16QAM调制:x[n] = r_I[n1] + j*r_Q[n1] 64QAM调制:x[n] = r_I[n2] + j*r_Q[n2] Turbo编码 编码:c[n] = [c1[n], c2[n]] 译码:b_hat[n] = TurboDecoding(y[n]) 实现难点和改进方向 4.1 实现难点 ...
Code Architecture for the System Under Test This example models a digital communication system using QPSK modulation. The function runQPSKSystemUnderTest.m models this communication environment. The QPSK transceiver model in this script is divided into the following four main components. 1) QPSKTransmit...