改进了非连贯脉冲位置调制的检测方案
1Electrical and Computer Engineering Department, Quchan University of Technology, Quchan, Khorasan Razavi 9477177870 Iran.
概括
两个新的非连贯脉冲位置调制 (PPM) 接收机方案提高了性能和数据速率. 绝对值立方体和极性不变方位增强信号处理,以提高无线通信的能源效率.
科学领域:
- 电气工程 电气工程
- 光学通信是指光学通信.
- 信号处理 信号处理
背景情况:
- 能量检测 (ED) 脉冲位置调制 (PPM) 接收器的性能和数据速率都很低.
- 连贯接收器提供更好的性能,但太复杂,无法实际使用.
- 不连贯的PPM接收器需要增强的检测方案以提高效率.
研究的目的:
- 提出和评估两个新的非连贯的PPM接收器检测方案.
- 提高PPM接收器在具有挑战性的通信环境中的性能和数据速率.
- 调查绝对值立方和极性不变方程在提高接收器性能方面的有效性.
主要方法:
- 在非连贯的PPM接收器中实现绝对值立方 (AVC) 操作,然后再进行调制.
- 使用加权传输参考 (WTR) 系统来提高能源效率和速度.
- 在WTR-PPM接收器结构中引入了一个极性不变方程 (PIS) 操作.
- 使用二进制PPM (BPPM) 在2.08和9.1 Mbps的车载频道上模拟接收器性能,具有各种干扰类型.
主要成果:
- 在没有符号间干扰 (ISI) 的情况下,AVC-BPPM接收器显著优于基于ED的接收器.
- 与ED-BPPM相比,WTR-BPPM系统表现出相当大的性能提升,特别是在更高的数据速率下.
- 拟议的基于PIS的WTR-BPPM系统与传统的WTR-BPPM系统相比,表现出更高的性能.
- 两种拟议方案都提供了可接受的复杂性,提高了性能.
结论:
- 拟议的基于AVC和PIS的WTR方案有效地提高了非连贯的PPM接收器性能.
- 这些先进的检测方法为提高无线系统的数据速率和能源效率提供了实际解决方案.
- 这些发现特别适用于面临噪音和干扰挑战的车载通信系统.
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