本文選題：車(chē)對(duì)車(chē)通信　切入點(diǎn)：幾何信道建模　出處：《計(jì)算機(jī)應(yīng)用研究》2016年10期

【摘要】：隨著極化相關(guān)技術(shù)的發(fā)展,極化調(diào)制在V2V(vehicle-to-vehicle)通信系統(tǒng)中的應(yīng)用越來(lái)越廣泛。但由于V2V通信環(huán)境復(fù)雜,極化調(diào)制在V2V通信中會(huì)產(chǎn)生去極化效應(yīng),從而影響通信質(zhì)量。為了能夠識(shí)別去極化效應(yīng)的大小,提出一種新的基于幾何散射理論的V2V多天線(xiàn)極化信道模型。該模型可通過(guò)已知的多天線(xiàn)配置、極化場(chǎng)輻射模式及散射體的空間分布,建立去極化效應(yīng)模型,從而將信道的去極化效應(yīng)由交叉極化鑒別度——XPD(cross polarization discrimination)的值表示,以拓展極化調(diào)制在V2V系統(tǒng)中的使用范圍,提高傳輸速率。實(shí)驗(yàn)結(jié)果表明,XPD的值受到車(chē)輛間距離影響存在閾值,并強(qiáng)烈依賴(lài)于到達(dá)方位角的分布常數(shù),且當(dāng)?shù)竭_(dá)方位角的值不同時(shí),改變到達(dá)仰角的最大值的大小,XPD值的變化呈固定趨勢(shì)。因此,所提出的多天線(xiàn)幾何信道模型,成功地將極化引入多天線(xiàn)的V2V通信,可以為極化域通信的進(jìn)一步研究奠定基礎(chǔ)。
[Abstract]:With the development of polarization related technology, polarization modulation is more and more widely used in V2V / V2V / V / V communication system. However, because of the complexity of V2V communication environment, polarization modulation will produce depolarization effect in V2V communication. In order to identify the depolarization effect, a new V2V multiantenna polarization channel model based on geometric scattering theory is proposed. In order to expand the range of polarization modulation in V2V system, a depolarization effect model is established by using the radiation mode of polarization field and the spatial distribution of scatterer, and the depolarization effect of channel is expressed by the value of cross-polarization discrimination-XPD-cross polarization discrimination.Then, the polarization modulation can be used in V2V system. The experimental results show that the value of XPD is strongly dependent on the distribution constant of the azimuth angle of arrival, and when the value of the arrival angle is different, the value of XPD is affected by the distance between the vehicles at a threshold, and it is strongly dependent on the distribution constant of the azimuth of arrival. The change of XPD value of the maximum value of elevation angle is a fixed trend. Therefore, the proposed multi-antenna geometric channel model successfully introduces polarization into multi-antenna V2V communication, which can lay a foundation for further research in polarization domain communication.
【作者單位】： 寧夏大學(xué)物理電氣信息學(xué)院信息工程系;寧夏沙漠信息智能感知重點(diǎn)實(shí)驗(yàn)室;北京市網(wǎng)絡(luò)體系構(gòu)建與融合重點(diǎn)實(shí)驗(yàn)室;
【基金】：國(guó)家自然科學(xué)基金資助項(xiàng)目(61561039,61461044) 寧夏自然基金資助項(xiàng)目(NZ14045) 寧夏大學(xué)科學(xué)研究基金資助項(xiàng)目(ZR1311)
【分類(lèi)號(hào)】：U463.673
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本文編號(hào)：1654310