【摘要】：針對垂直維空間自由度未被充分利用的問題,設(shè)計一種基于部分Kronecker積的兩級碼本。在兩級碼本中,第1級碼本確定一個波束向量組,該向量組確定用戶的大致范圍,描述信道的長期/寬帶特性。第2級碼本對此波束向量組進行波束列選擇和極化方向間的相位調(diào)整,選出的波束能準確地指向用戶,反映信道的短期/子帶特性。該兩級碼本能平衡大規(guī)模MIMO系統(tǒng)中反饋開銷和信道量化精確度之間的關(guān)系。仿真結(jié)果表明,在不增加反饋開銷的情況下,該碼本設(shè)計方法在系統(tǒng)頻譜效率和吞吐量方面能獲得明顯的性能增益。
[Abstract]:A two-level codebook based on partial Kronecker product is designed to solve the problem that vertical dimensional spatial degrees of freedom are not fully utilized. In a two-stage codebook, a first-stage codebook determines a beam vector group, which determines the approximate range of the user and describes the long-term / broadband characteristics of the channel. The second order codebook selects the beam array and adjusts the phase between the polarization direction. The selected beam can point to the user accurately and reflect the short-term / sub-band characteristics of the channel. The two-level codebook can balance the relationship between feedback overhead and channel quantization accuracy in large-scale MIMO systems. The simulation results show that, without increasing the feedback overhead, the proposed code-based design method can achieve significant performance gains in the spectral efficiency and throughput of the system.
【作者單位】： 重慶郵電大學重慶市移動通信重點實驗室;電信科學技術(shù)研究院無線移動創(chuàng)新中心;
【基金】：國家自然科學基金(61440062) 國家“863”計劃項目(2014AA01A705) 重慶市自然科學基金重點項目(CSTC2013jjB40001)
【分類號】：TN919.3

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1 龔和林;吳連發(fā);舒情;;基于矩陣Kronecker積的圖像加密算法[J];微計算機信息;2010年35期

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本文編號：2456519