基於受到載波間的干擾影響之SFBC-OFDM系統之研究

A Study on SFBC-OFDM Systems with ICI Effect

沈裕傑(Yu-Jie Shen)

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/碩士(2014年)

https://doi.org/10.6837/NCNU.2014.00162

摘要

對於一個正交分頻多工技術(orthogonal frequency division multiplexing, OFDM)的通訊系統，由於無線行動通訊環境的影響會破壞其子載波間的正交性，導致頻率偏移(frequency offset)並造成載波間干擾(intercarrier interference, ICI)。在此，本篇論文探討利用載波間干擾自我消除(ICI self-cancellation)技術於空頻區塊編碼(space-frequency block code, SFBC)之正交分頻多工(SFBC-OFDM)系統，從模擬結果可以看到在時間與頻率選擇衰減通道環境下，所提出的方法可以改良此類系統之錯誤率效能。

關鍵字

正交分頻多工 ； 空頻區塊編碼 ； 載波間干擾自我消除技術

並列摘要

For orthogonal frequency division multiplexing (OFDM) communication systems,mobile radio channels may distory the orthogonality between subcarriers. This leads to frequency offset and intercarrier interference (ICI) for such system. In this thesis, we investigate the use of ICI self-cancellation in space-frequency block coded OFDM systems. Simulation results show that in time/frequency selective fading channels, the proposed method can improve the error-rate performance.

並列關鍵字

OFDM ； SFBC ； ICI self-cancellation scheme

參考文獻

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