Performance evaluation of DFT/DCT/DST-based SC-FDMA systems in the presence of CFOs for wireless images transmission

IF 1.8 4区 计算机科学 Q3 TELECOMMUNICATIONS
Khaled A. M. Al Soufy, Faisal S. Al-Kamali, Claude D’Amours, Nagi H. N. Al-Ashwal, Farhan M. Nashwan, Mohamed A. Swillam
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引用次数: 0

Abstract

Single carrier frequency division multiple access (SC-FDMA) has become increasingly popular in broadband data transmission systems due to its many advantages. One of the main advantages is the lower peak-to-average power ratio (PAPR), which significantly benefits the mobile terminal station in terms of transmit power efficiency. However, SC-FDMA is susceptible to carrier frequency offsets (CFOs) which affect the orthogonality between subcarriers and cause inter-carrier interference (ICI) and multiple access interference (MAI). In this paper, we analyze and evaluate the performance of SC-FDMA in the presence of CFOs for wireless image transmission with different basis functions, different subcarrier mapping techniques, and different modulation schemes over vehicular A and SUI3 channel models. This study focuses on evaluating the performance of SC-FDMA using wireless image transmission. The evaluation is conducted based on two performance metrics, namely peak signal-to-noise ratio (PSNR) and mean square error (MSE). Specifically, we consider the following three cases: the no CFOs case, the case when CFOs are present but without compensation, and the case when CFOs are present and CFO compensation is used. The CFO compensation technique used in this work is the joint mean minimum squared error (JMMSE) method. The results showed that JMMSE with DFT can provide better performance in the presence of CFOs compared to DCT and DST. Additionally, the choice of interleaved subcarrier mapping technique provides better performance compared to localized subcarrier mapping. Furthermore, the impact of the modulation scheme and the channel model on system performance is also evaluated, with the results showing that QPSK is more robust to CFOs compared to 16QAM modulation and the performance is better transmitting over the SU13 model rather than the vehicular A channel model. Simulation results demonstrate the effectiveness of JMMSE combined with DFT and interleaved subcarrier mapping in mitigating the effects of CFOs and multipath channels, especially with the SUI3 channel model and QPSK modulation.

Abstract Image

存在 CFO 时基于 DFT/DCT/DST 的 SC-FDMA 系统在无线图像传输中的性能评估
单载波频分多址(SC-FDMA)因其诸多优势,在宽带数据传输系统中越来越受欢迎。其主要优势之一是峰均功率比(PAPR)较低,这大大提高了移动终端站的发射功率效率。然而,SC-FDMA 容易受到载波频率偏移(CFO)的影响,从而影响子载波之间的正交性,造成载波间干扰(ICI)和多路访问干扰(MAI)。在本文中,我们分析并评估了 SC-FDMA 在存在 CFO 的情况下,在车辆 A 和 SUI3 信道模型上使用不同的基函数、不同的子载波映射技术和不同的调制方案进行无线图像传输时的性能。本研究的重点是利用无线图像传输评估 SC-FDMA 的性能。评估基于两个性能指标,即峰值信噪比(PSNR)和均方误差(MSE)。具体来说,我们考虑了以下三种情况:没有 CFO 的情况、有 CFO 但没有补偿的情况以及有 CFO 并使用 CFO 补偿的情况。本研究采用的 CFO 补偿技术是联合平均最小平方误差法(JMMSE)。结果表明,与 DCT 和 DST 相比,采用 DFT 的 JMMSE 在出现 CFO 时能提供更好的性能。此外,与局部子载波映射相比,选择交错子载波映射技术能提供更好的性能。此外,还评估了调制方案和信道模型对系统性能的影响,结果表明,与 16QAM 调制相比,QPSK 对 CFO 的鲁棒性更强,在 SU13 模型而不是车辆 A 信道模型上传输性能更好。仿真结果表明,JMMSE 与 DFT 和交错子载波映射相结合,能有效减轻 CFO 和多径信道的影响,尤其是在 SUI3 信道模型和 QPSK 调制情况下。
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
Annals of Telecommunications
Annals of Telecommunications 工程技术-电信学
CiteScore
5.20
自引率
5.30%
发文量
37
审稿时长
4.5 months
期刊介绍: Annals of Telecommunications is an international journal publishing original peer-reviewed papers in the field of telecommunications. It covers all the essential branches of modern telecommunications, ranging from digital communications to communication networks and the internet, to software, protocols and services, uses and economics. This large spectrum of topics accounts for the rapid convergence through telecommunications of the underlying technologies in computers, communications, content management towards the emergence of the information and knowledge society. As a consequence, the Journal provides a medium for exchanging research results and technological achievements accomplished by the European and international scientific community from academia and industry.
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