arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1502.00364cs.ITmath.IT
收藏

室内可见光通信系统中单载波和多载波调制方式的性能研究

On the Performance of Single- and Multi-carrier Modulation Schemes for Indoor Visible Light Communication Systems

Mohammadreza Aminikashani, Mohsen Kavehrad

摘要:

在本文中,我们调查和比较的性能单载波和多载波调制方案的室内可见光通信(VLC)。在考虑LED传输函数非线性失真的情况下,分析了单载波频域均衡(SCFDE)、正交频分复用(OFDM)和开关键控(OOK)结合最小均方误差均衡(MMSE)对室内光信道多径失真的影响。我们的研究结果表明,SCFDE系统,相比于OFDM系统,没有遭受高峰均功率比(PAPR),可以优于OFDM和OOK系统。我们进一步研究了LED偏置点对OFDM系统性能的影响,并表明,偏置LED的最佳值可以显着提高系统的性能。比特交织编码调制(BICM)也被考虑用于OFDM和SCFDE系统,以进一步补偿由于符号间干扰(ISI)和LED非线性引起的信号退化。

英文摘要:

In this paper, we investigate and compare the performance of single- and multi-carrier modulation schemes for indoor visible light communication (VLC). Particularly, the performances of single carrier frequency domain equalization (SCFDE), orthogonal frequency division multiplexing (OFDM) and on-off keying (OOK) with minimum mean square error equalization (MMSE) are analyzed in order to mitigate the effect of multipath distortion of the indoor optical channel where nonlinearity distortion of light emitting diode (LED) transfer function is taken into account. Our results indicate that SCFDE system, in contrast to OFDM system, does not suffer from high peak to average power ratio (PAPR) and can outperform OFDM and OOK systems. We further investigate the impact of LED bias point on the performance of OFDM systems and show that biasing LED with the optimum value can significantly enhance the performance of the system. Bit-interleaved coded modulation (BICM) is also considered for OFDM and SCFDE systems to further compensate signal degradation due to inter-symbol interference (ISI) and LED nonlinearity.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑