大氣激光通信中自適應(yīng)調(diào)制編碼技術(shù)的模式選擇閾值
發(fā)布時(shí)間:2018-12-24 08:11
【摘要】:研究了一種用于大氣激光通信自適應(yīng)調(diào)制編碼技術(shù)中的模式選擇閾值的選取算法。分析了大氣弱湍流信道性能,并對(duì)高斯信道中閾值選取算法進(jìn)行修正,提出了一種信噪比-湍流強(qiáng)度選擇方法來(lái)確定閾值區(qū)域模式,并給出了閾值選取方程。分析了湍流強(qiáng)度分別為0,0.1,0.2,0.3時(shí)3種傳輸模式下自適應(yīng)調(diào)制編碼系統(tǒng)的誤碼率,得到了最大誤碼率為10-4的條件下3種模式選擇的信噪比與湍流強(qiáng)度閾值區(qū)域的對(duì)應(yīng)關(guān)系。仿真結(jié)果表明,所提方法可行且能夠準(zhǔn)確地進(jìn)行模式選擇。
[Abstract]:A mode selection threshold selection algorithm for adaptive modulation coding in atmospheric laser communication is studied. The performance of atmospheric weak turbulence channel is analyzed and the threshold selection algorithm in Gao Si channel is modified. A SNR turbulence intensity selection method is proposed to determine the threshold region model and the threshold selection equation is given. The bit error rate (BER) of the adaptive modulation coding system in three transmission modes is analyzed when the turbulence intensity is 0. 1 / 0. 2 / 0. 3. The relationship between the SNR of the three modes and the turbulence intensity threshold region is obtained when the maximum bit error rate is 10-4. Simulation results show that the proposed method is feasible and accurate.
【作者單位】: 解放軍電子工程學(xué)院脈沖功率激光技術(shù)國(guó)家重點(diǎn)實(shí)驗(yàn)室;
【基金】:國(guó)家自然科學(xué)基金(61571446)
【分類(lèi)號(hào)】:TN929.1
[Abstract]:A mode selection threshold selection algorithm for adaptive modulation coding in atmospheric laser communication is studied. The performance of atmospheric weak turbulence channel is analyzed and the threshold selection algorithm in Gao Si channel is modified. A SNR turbulence intensity selection method is proposed to determine the threshold region model and the threshold selection equation is given. The bit error rate (BER) of the adaptive modulation coding system in three transmission modes is analyzed when the turbulence intensity is 0. 1 / 0. 2 / 0. 3. The relationship between the SNR of the three modes and the turbulence intensity threshold region is obtained when the maximum bit error rate is 10-4. Simulation results show that the proposed method is feasible and accurate.
【作者單位】: 解放軍電子工程學(xué)院脈沖功率激光技術(shù)國(guó)家重點(diǎn)實(shí)驗(yàn)室;
【基金】:國(guó)家自然科學(xué)基金(61571446)
【分類(lèi)號(hào)】:TN929.1
【參考文獻(xiàn)】
相關(guān)期刊論文 前7條
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本文編號(hào):2390383
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