發(fā)布時(shí)間：2019-02-26 13:28

【摘要】：在差分調(diào)制解調(diào)的信號(hào)模型下,提出了高鐵場(chǎng)景下2種多天線分集接收模型——線性合并分集接收和統(tǒng)計(jì)合并分集接收,從而得出高鐵場(chǎng)景下車地?zé)o線寬帶通信較有效的分集接收方案,提升系統(tǒng)性能。數(shù)學(xué)分析和仿真結(jié)果表明,所提出的線性合并分集和統(tǒng)計(jì)合并分集都可以通過(guò)增加分集數(shù)來(lái)降低高速移動(dòng)帶來(lái)的誤碼率平層,統(tǒng)計(jì)合并分集的性能要優(yōu)于線性合并分集,但是其接收機(jī)復(fù)雜度也比線性合并分集要高。在實(shí)際應(yīng)用中可以根據(jù)QoS的要求在性能和復(fù)雜度之間進(jìn)行折衷。
[Abstract]:Under the signal model of differential modulation and demodulation, two kinds of multi-antenna diversity receiving models in high-speed railway scenario, linear merge diversity reception and statistical combination diversity reception, are proposed. As a result, a more effective diversity receiving scheme for vehicle-to-ground wireless broadband communication under high-speed rail scenario is obtained, and the performance of the system is improved. The mathematical analysis and simulation results show that the proposed linear merge diversity and statistical merge diversity can reduce the bit error rate parity layer caused by high-speed movement by increasing the number of diversity, and the performance of statistical merge diversity is better than that of linear merge diversity. However, the complexity of the receiver is also higher than that of linear merge diversity. In practical applications, the tradeoff between performance and complexity can be made according to the requirements of QoS.
【作者單位】： 西南交通大學(xué)信息編碼與傳輸四川省重點(diǎn)實(shí)驗(yàn)室;廣西民族大學(xué)物理與電子工程學(xué)院;中興通訊股份有限公司基帶算法部;
【基金】：國(guó)家重點(diǎn)基礎(chǔ)研究發(fā)展計(jì)劃(“973”計(jì)劃)基金資助項(xiàng)目(2012CB316100) 國(guó)家自然科學(xué)基金資助項(xiàng)目(61071108,61032002) 鐵道部科技研究開(kāi)發(fā)計(jì)劃重點(diǎn)課題基金資助項(xiàng)目(2011X011-A) 中興通訊產(chǎn)學(xué)研合作基金資助項(xiàng)目~~
【分類號(hào)】：U285;TN929.5
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本文編號(hào)：2430816