【摘要】：天線部署空間限制和信道信息精度是影響大規(guī)模天線性能的重要因素,雙極化天線能夠有效地減少天線尺寸,在有限的空間內(nèi)部署更多的天線,成為了大規(guī)模天線部署時的主流選擇.但是由于信道的維度較大,目前,反饋技術(shù)面臨碼本中碼字數(shù)目巨大、設(shè)計困難的問題,并且同時導(dǎo)致反饋開銷大以及碼字選擇計算復(fù)雜度高.本文提出了一種新的基于多徑的雙極化信道反饋方法,這種方法僅僅需要少量的長周期寬帶反饋的多徑方向和幅度信息,結(jié)合一些短周期子帶反饋的相位合并信息即可獲得更加精確的預(yù)編碼.結(jié)果表明這種方法能夠有效地提高量化反饋效率并降低終端側(cè)復(fù)雜度.
[Abstract]:The space limit of antenna deployment and the accuracy of channel information are the important factors that affect the performance of large-scale antenna. The dual-polarization antenna can effectively reduce the size of antenna and deploy more antennas in limited space. It has become the main choice for large-scale antenna deployment. However, due to the large dimension of the channel, the feedback technology is faced with the problems of huge number of codewords in codebook, difficult design, and high feedback overhead and high computational complexity of codeword selection at the same time. In this paper, a novel multipath-based dual-polarization channel feedback method is proposed, which requires only a small amount of multipath direction and amplitude information of long-period broadband feedback. More accurate precoding can be obtained by combining some short-period subband feedback phase merging information. The results show that this method can effectively improve the quantization feedback efficiency and reduce the end-side complexity.
【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】：TN92

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