基于分组子载波索引调制OFDM的多维调制方法

2021 19th International Conference on Optical Communications and Networks (ICOCN) Pub Date : 2021-08-23 DOI:10.1109/ICOCN53177.2021.9563709

Xin Wang, Qi Zhang, Ran Gao, Xishuo Wang, X. Xin, Feng Tian, Qinghua Tian, Yongjun Wang, Dong Guo, Huan Chang

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引用次数: 1

摘要

为了解决子载波指数调制OFDM系统中分组调制带来的频谱效率损失问题，提出了一种基于分组子载波指数调制OFDM的多维调制方法。该方法将静默子载波的数量作为一个额外的调制维度，从而增加SIM-OFDM码元的携带比特数，提高系统的频谱效率。仿真结果表明，虽然多维调制GSIM-OFDM系统的误码率略高于传统的GSIM-OFDM系统，但该方法的频谱效率也优于传统分组调制方法的系统。而且，分组越多，频谱效率的优势就越明显。

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Multidimensional Modulation Method based on Grouped Subcarrier Index Modulated OFDM

In order to solve the problem of spectrum efficiency loss caused by grouped modulation in subcarrier index modulated OFDM system, a multidimensional modulation method based on grouped subcarrier index modulated OFDM is proposed. This method makes the number of silent subcarriers as an extra modulation dimension, so as to increase the number of bits carried on SIM-OFDM symbol and improve the spectrum efficiency of the system. According to the simulation result, although the BER of multidimensional modulated GSIM-OFDM system is a little higher than that of traditional GSIM-OFDM system, the spectrum efficiency of the system with the proposed method is also better than that of the system with traditional grouped modulation method. What's more, the more groups, the more obvious the advantage of spectrum efficiency.

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2021 19th International Conference on Optical Communications and Networks (ICOCN)

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