本文選題：虛擬多輸入輸出 + 非協(xié)作�。� 參考：《重慶郵電大學(xué)學(xué)報(bào)(自然科學(xué)版)》2017年03期

【摘要】：針對(duì)多用戶配對(duì)虛擬MIMO(multiple input multiple output)安全性差,對(duì)信道估計(jì)器依賴性強(qiáng)的問(wèn)題,提出一種基于非相干空頻碼(non-coherent space frequency code,NSFC)和正交頻分復(fù)用(orthogonal frequency division multiplexing,OFDM)的非協(xié)作式虛擬MIMO。在分析NSFC成對(duì)錯(cuò)誤概率的基礎(chǔ)上,給出能滿足全分集階數(shù)和最大編碼增益的編碼準(zhǔn)則。為了獲得平行子信道傳輸效果,利用信道循環(huán)矩陣奇異值分解(singular value decomposition,SVD)后得到的酉矩陣分別進(jìn)行預(yù)編碼和預(yù)解碼�；谧顑�(yōu)NSFC和OFDM預(yù)編解碼,提出一種新穎的虛擬MIMO策略。該虛擬MIMO在收發(fā)兩端均無(wú)需信道瞬時(shí)信息,以非協(xié)作方式在單天線內(nèi)模擬多天線收發(fā)效果。理論和仿真分析結(jié)果表明,虛擬MIMO系統(tǒng)能有效逼近實(shí)際理想MIMO的系統(tǒng)容量和誤比特率性能,顯著降低了虛擬MIMO系統(tǒng)的檢測(cè)門(mén)限。
[Abstract]:In view of the poor security of multi user pairing virtual MIMO (multiple input multiple output) and the strong dependence on channel estimator, a non cooperative virtual reality based on non coherent space frequency code (non-coherent space frequency code, NSFC) and orthogonal frequency division multiplexing (orthogonal frequency) is proposed. On the basis of FC pair error probability, the coding criteria that can satisfy the full diversity order and maximum coding gain are given. In order to obtain the parallel subchannel transmission effect, the unitary matrix of the channel cyclic matrix singular value decomposition (singular value decomposition, SVD) is precoded and predeciphed respectively. Based on the optimal NSFC and OFDM precoding. A novel virtual MIMO strategy is proposed. The virtual MIMO does not need the instantaneous channel information at both ends of the transceiver, and simulate the effectiveness of multiple antennas in a single antenna in a non cooperative way. The theoretical and simulation results show that the virtual MIMO system can effectively approximate the system capacity and bit error rate performance of the actual ideal MIMO and significantly reduce the virtual reality. Detection threshold of the quasi MIMO system.
【作者單位】： 南華大學(xué)電氣工程學(xué)院;湖南大學(xué)電氣與信息工程學(xué)院;
【基金】：中央高�；究蒲许�(xiàng)目(2014-004) 國(guó)家自然科學(xué)基金(61172089) 湖南省教育廳重點(diǎn)項(xiàng)目(16A181) 湖南省科技計(jì)劃項(xiàng)目(2014WK3001) 衡陽(yáng)市科技計(jì)劃發(fā)展項(xiàng)目(2015KG48)~~
【分類(lèi)號(hào)】：TN919.3

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本文編號(hào)：2013172