信道估计数据集 (CE-0001)

数据集包含单小区单用户 32T2R 的下行多天线信道，数据样本数量为 21 万例样本，数据格式为.mat文件。对于 12 个子载波和 14 个 OFDM 符号，DMRS 图样请见图示。 每个样本的输入为 H_in，维度为 48*2*2，分别对应 48 个子载波，2 个符号，实部和虚部。每个样本的输出为 H_out，维度为 96*14*2，分别对应 96 个子载波，14 个符号，实部和虚部。频域一共有 96 个子载波，H_out 占据所有子载波，而 H_in 只占据其中的奇数子载波。时域一共有 14 个 OFDM 符号，H_out 占据所有 OFDM 符号，而 H_in 只占据其中第 4 个和第 12 个OFDM 符号。发送端采用波束赋形，将 32 根发送天线的信号转化为一路信号，所有子载波采用相同的波束赋形向量。接收端有两根接收天线，但 H_in 和 H_out 只代表第一根接收天线的信号。

This dataset contains downlink multi-antenna channel data for single-cell single-user 32T2R configuration, with a total of 210,000 data samples stored in .mat file format. For 12 subcarriers and 14 OFDM symbols, the DMRS pattern is shown in the accompanying figure. Each sample has an input H_in with a dimension of 48×2×2, corresponding to 48 subcarriers, 2 symbols, and real/imaginary parts respectively. Each sample has an output H_out with a dimension of 96×14×2, corresponding to 96 subcarriers, 14 symbols, and real/imaginary parts respectively. In the frequency domain, there are a total of 96 subcarriers: H_out occupies all subcarriers, while H_in only occupies the odd-indexed subcarriers. In the time domain, there are a total of 14 OFDM symbols: H_out occupies all OFDM symbols, while H_in only covers the 4th and 12th OFDM symbols. The transmitter adopts beamforming, which converts the signals from 32 transmit antennas into a single signal, and the same beamforming vector is used for all subcarriers. The receiver has two receive antennas, but both H_in and H_out only represent the signals of the first receive antenna.