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在CP-OFDMA框架中实现恒定外传输的增强频谱效率
Zhuhong Zhu1, Yiming Zhu1, Xiaodong Xu2
1National Mobile Communications Research Laboratory, Southeast University, Nanjing 210096, China.
Sensors (Basel, Switzerland)
|December 11, 2025
概括
恒周期前OFDM (CE-CP-OFDM) 为6G网络提供了高频谱效率,同时降低了峰值与平均功率比 (PAPR). 这解决了下一代无线系统中功率放大器限制和非线性扭曲的问题.
科学领域:
- 无线通信系统无线通信系统
- 对于电信的信号处理.
- 下一代移动网络是下一代移动网络
背景情况:
- 由于其效率,直角频率分割复杂化 (OFDM) 是6G的标准,但受到高峰到平均功率比 (PAPR) 的影响.
- 高的PAPR降低了功率放大器的效率,并导致非线性扭曲,这对于功率和成本受限的6G网络来说是关键问题.
研究的目的:
- 提出一种新的常量封面循环前OFDM (CE-CP-OFDM) 收发器架构.
- 为了保持高光谱效率,同时在6G系统中显著降低PAPR.
- 为应对非线性扭曲和功率效率带来的挑战.
主要方法:
- 开发了一种带有部分频率重叠的光谱高效子载波映射方案.
- 引入了一个最佳的多用户CE试点设计,使用频域相位移和基于DFT的概括序列.
- 提出了一个联合的延迟频域通道估计和一个代频域LMMSE等分器.
主要成果:
- 拟议的CE-CP-OFDM收发器保持了高频谱效率.
- 与传统的OFDM波形相比,实现了显著较低的PAPR.
- 在频率选择性色通道中表现出优异的比特错误率性能.
结论:
- CE-CP-OFDM是6G网络的可行波形,平衡了光谱效率和功率效率.
- 拟议的收发器设计有效地减轻了非线性扭曲和干扰.
- 这种方法为未来的电力和成本受限制的无线系统提供了一个有希望的解决方案.
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