设计和实施一个低复杂性的多重CPM接收器与线性相近似同步算法.
Le Wang1, Huan Wen1, Xucen Wu1
1School of Information Science and Technology, North China University of Technology, Beijing 100144, China.
Entropy (Basel, Switzerland)
|November 24, 2023
概括
本研究介绍了一种高效的全数字解调器,用于多小时连续相模 (CPM). 拟议的方法大大降低了数字通信系统的复杂性和硬件资源.
科学领域:
- 数字通信数字通信
- 信号处理 信号处理
- 无线通信系统无线通信系统
背景情况:
- 多小时连续相调制 (CPM) 提供高光谱效率,但遭受复杂的调制.
- 传统的多小时CPM同步方法需要许多匹配的过器和复杂的格子结构.
- 高解调复杂性阻碍了先进调制方案的实际实施.
研究的目的:
- 为多小时CPM提出一个高效的全数字解调器.
- 为了减少多小时CPM接收器中同步算法的复杂性.
- 为了减少实施多小时CPM调节器的硬件资源开销.
主要方法:
- 开发了一个低复杂度的决策导向同步算法.
- 提出了使用线性相近似 (LPA) 的复杂性降低的计时错误检测器.
- 在Xilinx Kintex-7 FPGA平台上实现了基于LPA的同步接收器.
主要成果:
- 基于LPA的同步算法避免了衍生匹配过,将匹配过器减少了大约2/3.3.
- 与传统方法相比,数值模拟显示估计精度和比特错误率 (BER) 性能没有损失.
- FPGA的实施表明无法忽视的BER损失和硬件资源的显著减少 (27%的切片,64%的DSP,70%的BRAM).
结论:
- 拟议的基于LPA的同步算法为多小时CPM解调提供了高效和实用的解决方案.
- 降低复杂性和硬件开销使其适用于资源有限的数字通信系统.
- 全数字解调器实现了与模拟相匹配的性能,并节省了大量的实施成本.
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