基於正交分頻多工系統之指標調變技術研究

A study on index modulated OFDM systems

曾丞德(Cheng-De Zeng)

指導教授 ： 李彥文

國立暨南國際大學/科技學院/電機工程學系通訊工程碩士班/碩士(2018年)

摘要

指標調變(Index Modulation, IM)的概念在最近幾年受到廣泛的討論與關注，顧名思義，指標調變可以透過介質的指標來調變訊號並進行傳送，基於正交分頻多工之指標調變(Orthogonal Frequency Division Multiplexing with Index Modulation, OFDM-IM )系統做為指標調變技術的其中一種，使用子載波做為介質來實現指標調變。在相同的頻譜效率(Spectral Efficiency, SE)下，OFDM-IM系統可以達到比傳統OFDM更好的位元錯誤率(Bit Error Rate, BER)表現。
在本文中，我們提出一個名為基於子載波選擇之指標調變(Index Modulation with Subcarrier Selection, IM-SS)的方法，並在IM-SS的架構下應用子載波交織(Interleaved subcarrier, IS)技術。模擬結果顯示，在相同的頻譜效率下，我們提出的基於子載波選擇使用子載波交織之指標調變(Index Modulation with Subcarrier Selection using Interleaved subcarrier, IM-SS-IS)可以更進一步的改善傳統OFDM-IM的位元錯誤率表現。

關鍵字

正交分頻多工 ； 指標調變 ； 子載波交織

並列摘要

The concept of index modulation (IM) has been widely discussed in recent years. As its name implies, index modulation transmits signal by modulating data into indices of medium. As a member of the IM techniques, Orthogonal Frequency Division Multiplexing with Index Modulation (OFDM-IM) implements index modulation through using subcarriers as medium. It can be seen that OFDM-IM system achieves better bit error rate (BER) performance than classical OFDM under the condition of same spectral efficiency (SE).
In this thesis, we proposed a scheme termed Index modulation with subcarrier selection (IM-SS). Furthermore, we use interleaved subcarrier (IS) technique on the structure of IM-SS. Simulation results show that the scheme we proposed termed Index modulation with subcarrier selection using interleaved subcarrier (IM-SS-IS) can further improved the bit error rate (BER) performance of classical OFDM-IM under the condition of same spectral efficiency.

並列關鍵字

OFDM ； Index Modulation ； Interleaved Subcarrier

參考文獻

[1] M. Wen, X. Cheng, and L. Yang, Index Modulation for 5G Wireless Communications, 1st Ed., Springer, Jan. 2017.

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[5] N. Ishikawa, S. Sugiura, and L. Hanzo, “Subcarrier-Index Modulation Aided OFDM - Will It Work?,” IEEE Access, Vol. 4, pp. 2580-2593, Jun. 2016.