低復(fù)雜度空間調(diào)制MPSK信號的最優(yōu)檢測
發(fā)布時間:2018-08-06 21:23
【摘要】:針對MQAM信號,已有低復(fù)雜度的最優(yōu)檢測算法,但是針對MPSK信號還沒有類似的最優(yōu)檢測算法發(fā)表,因此從二維矢量量化的ML解調(diào)角度出發(fā),利用MPSK星座圖的特性,給出了與調(diào)制符號階數(shù)無關(guān)的ML簡化算法,避免了ML聯(lián)合檢測算法中對調(diào)制符號空間的搜索,極大地降低了算法復(fù)雜度。新算法不僅與ML最優(yōu)檢測算法具有完全相同的性能,而且具有較低的復(fù)雜度,有較好的理論和實際意義。該算法在天線技術(shù)和綠色通信技術(shù)中有較好的實際應(yīng)用意義。
[Abstract]:There are low complexity optimal detection algorithms for MQAM signals, but no similar optimal detection algorithms have been published for MPSK signals. Therefore, from the point of view of the ML demodulation of two-dimensional vector quantization, the characteristics of MPSK constellation diagram are utilized. A simplified ML algorithm which is independent of the order of modulation symbols is presented, which avoids the search of modulation symbol space in the ML joint detection algorithm and greatly reduces the complexity of the algorithm. The new algorithm not only has the same performance as the ML optimal detection algorithm, but also has lower complexity and has good theoretical and practical significance. The algorithm has good practical significance in antenna technology and green communication technology.
【作者單位】: 大連理工大學(xué)信息與通信工程學(xué)院;
【分類號】:TN911.3
[Abstract]:There are low complexity optimal detection algorithms for MQAM signals, but no similar optimal detection algorithms have been published for MPSK signals. Therefore, from the point of view of the ML demodulation of two-dimensional vector quantization, the characteristics of MPSK constellation diagram are utilized. A simplified ML algorithm which is independent of the order of modulation symbols is presented, which avoids the search of modulation symbol space in the ML joint detection algorithm and greatly reduces the complexity of the algorithm. The new algorithm not only has the same performance as the ML optimal detection algorithm, but also has lower complexity and has good theoretical and practical significance. The algorithm has good practical significance in antenna technology and green communication technology.
【作者單位】: 大連理工大學(xué)信息與通信工程學(xué)院;
【分類號】:TN911.3
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