双散射V2V连接与LOS和地面反射的直角时空块编码
Miguel Gutiérrez Gaitán1,2, Gowhar Javanmardi2,3, Ramiro Sámano-Robles2
1Facultad de Ingeniería, Universidad Andres Bello, Santiago 8370146, Chile.
Sensors (Basel, Switzerland)
|December 9, 2023
概括
时空区块代码 (STBC) 在车辆对车辆 (V2V) 通信中有效打击信号色,即使有地面反射和快速变化的通道. 这些代码在各种V2V场景中提高了系统性能.
科学领域:
- 无线通信无线通信
- 信号处理 信号处理
- 汽车技术 汽车技术
背景情况:
- 车辆对车辆 (V2V) 通信系统面临着快速消失的道带来的挑战.
- 像地面反射和高多普勒频率这样的损伤显著影响V2V MIMO性能.
- 现有的多样性计划在动态的车辆环境中可能不足.
研究的目的:
- 分析时空块代码 (STBC) 在V2V快色通道中的性能.
- 调查决定性的地面反射和增加的多普勒频率对V2V MIMO系统的影响.
- 评估STBCs在减轻车辆环境中的自我干扰和深度色方面的有效性.
主要方法:
- 使用近似模型对具有不同编码速率的STBC进行性能分析.
- 在两个车辆上分布的天线元件的V2V通道的建模.
- 采用多射线模型用于地面反射干扰和多普勒效应的双散射模型.
主要成果:
- STBC有效地抵消因各种车辆间距离和多普勒频率的自我干扰引起的信号色.
- 与仅仅接受多样性相比,STBC在深度色中表现出优异的性能,即使在时间变化的频道中失去对角性.
- 高级STBC显示收益,特别是多个天线接收器,即使在较低的编码率.
结论:
- 在具有挑战性的通道条件下,STBC是提高V2V通信可靠性的可行解决方案.
- 使用STBC的传输多样性可以在时间变化的车辆通道中有效地利用,视线可修改.
- 这些发现为优化V2V系统设计提供了见解,考虑到道损害和多样性技术.
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