【摘要】：在實際環(huán)境中,布置雙極化天線時存在極化泄漏問題,影響信道信息量化反饋方法的精度,大規(guī)模天線系統(tǒng)中會造成預(yù)編碼性能明顯下降.本文從雙極化信道模型出發(fā),將信道矩陣分解為理想極化信道部分和極化泄露部分,并對各部分信道的特征矢量進行了分析,得到了各部分最佳特征矢量模型.基于這些模型,給出了基于多個分量加權(quán)合并的信道特征矢量量化反饋方法,能夠有效地適應(yīng)極化泄露帶來的影響.仿真結(jié)果表明,該反饋方法能有效提高信道信息的量化效率和精度,進而獲得明顯的譜效率提升.
[Abstract]:In the actual environment, there is a polarization leakage problem when the dual-polarization antenna is arranged, which affects the accuracy of the channel information quantification feedback method, and the precoding performance of the large-scale antenna system will be obviously degraded. In this paper, based on the dual polarization channel model, the channel matrix is decomposed into ideal polarization channel part and polarization leakage part, and the characteristic vector of each part of the channel is analyzed, and the optimal feature vector model of each part is obtained. Based on these models, a channel feature vector quantization feedback method based on weighted combination of multiple components is proposed, which can effectively adapt to the influence of polarization leakage. The simulation results show that the feedback method can effectively improve the quantification efficiency and accuracy of channel information, and then obtain obvious spectral efficiency improvement.
【作者單位】： 北京郵電大學(xué)網(wǎng)絡(luò)體系架構(gòu)與融合北京市重點實驗室;中興通訊股份有限公司;
【基金】：國家“八六三”計劃項目(2014AA01A706)
【分類號】：TN919.3

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