用Python进行OQAM_OFDM通感一体化波形设计 详细代码

在Python中进行正交频分复用（OFDM）与正交幅度调制（OQAM）结合的一体化波形设计通常涉及到数字信号处理库如numpy、scipy以及专用的通信工程工具包，例如PyOTFS（开源的正交时间频率域分割库）。以下是一个简化版的示例，展示了如何创建一个基本的OQAM-OFDM信号：

import numpy as np
from pyotfs import OTFS

# 定义系统参数
symbol_rate = 5e6
subcarrier_spacing = 15e3
num_subcarriers = 1024
num_symbols = 10
guard_band = 0.1
cyclic_prefix_length = int(0.2 * num_subcarriers)

# 创建OFDM信号
ofdm = OTFS(symbol_rate=symbol_rate,
            subcarrier_spacing=subcarrier_spacing,
            num_subcarriers=num_subcarriers,
            num_symbols=num_symbols,
            guard_band=guard_band,
            cyclic_prefix=cyclic_prefix_length)

# 使用OQAM调制
oqam_modulated_data = ofdm.apply_oqam(np.random.randint(2, size=(num_symbols, num_subcarriers)))

# 转换为实数序列
real_samples = oqam_modulated_data.real

# 将OFDM信号转换为离散时间信号
time_domain_signal = ofdm.to_time_domain(real_samples)

# 显示波形
import matplotlib.pyplot as plt
plt.plot(time_domain_signal)
plt.title('OQAM-OFDM波形')
plt.xlabel('Time (samples)')
plt.ylabel('Amplitude')
plt.show()