Evaluation of OFDM Systems With Virtual Carriers Over V2V Channels

2018 IEEE 9th Annual Information Technology, Electronics and Mobile Communication Conference (IEMCON) Pub Date : 2018-11-01 DOI:10.1109/IEMCON.2018.8615092

J. A. D. Puerto-Flores, Ramon Parra-Michel, F. Peña-Campos, J. Cortez, E. Romero-Aguirre

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引用次数: 2

Abstract

Computational complexity and spectral efficiency are key components on the implementation of vehicular communication systems. However, in order to counteract the intercarrier interference (ICI) in orthogonal frequency division multiplexing (OFDM) systems, it's usual to resort receivers with high computational complexity or reduced spectral efficiency. This paper analyzes the inclusion of virtual carriers (V C) as a mean to reduce the ICI and the computational complexity required by the nonlinear ordered successive interference cancellation (OSIC). From the simulation results, it is demonstrated that using VC provides 90% reduction in the computational cost required for executing data detection, as well as a gain of 5 dB compared to conventional OFDM system with linear detection. In addition, the system is tested for different rates of channel coding obtaining results that show VC to be a convenient technique for reducing system complexity with low impact on the system throughput.

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基于V2V信道的虚拟载波OFDM系统评估

计算复杂度和频谱效率是车载通信系统实现的关键因素。然而，为了对抗正交频分复用(OFDM)系统中的载波间干扰(ICI)，通常采用计算复杂度高或频谱效率低的接收机。本文分析了虚拟载波(vc)作为降低非线性有序连续干扰抵消(OSIC)所需的ICI和计算复杂度的一种手段。仿真结果表明，与具有线性检测的传统OFDM系统相比，使用VC可将执行数据检测所需的计算成本降低90%，并获得5db的增益。此外，对系统进行了不同信道编码速率的测试，结果表明VC是一种降低系统复杂性且对系统吞吐量影响较小的方便技术。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

2018 IEEE 9th Annual Information Technology, Electronics and Mobile Communication Conference (IEMCON)

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