A novel non-equidifferent optical APPM mapping scheme for strong turbulent atmospheric channel
A novel non-equidifferent optical APPM mapping scheme for strong turbulent atmospheric channel
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DOI：
10.1109/cc.2015.7084361
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发表时间：
2015-04
影响因子：
4.1
通讯作者：
Kaimin Wang;Lijia Zhang;Bo Liu;Qi Zhang;Qinghua Tian;Peng Xu;X. Xin
中科院分区：
文献类型：
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作者：
Kaimin Wang;Lijia Zhang;Bo Liu;Qi Zhang;Qinghua Tian;Peng Xu;X. Xin
提出了一种针对强湍流大气信道的光幅度和脉冲位置调制（APPM）映射方案，以优化误码率（BER）性能。该方案与传统方案不同，基于对特定A×M APPM解映射过程的定量BER分析，设计了非等差幅度序列，其中包括时隙选择和所选时隙中的幅度决策。 4×4、4×8和4×16 APPM的仿真结果显示，与传统APPM方案相比，SNR增益分别为4、3.4和6.9 dB。因此，误码率性能得到显着改善，有助于提高自由空间光通信系统的可靠性。
An optical Amplitude and Pulse Position Modulation (APPM) mapping scheme for strong turbulent atmospheric channel is proposed to optimize Bit Error Rate (BER) performance. In this scheme, a non-equidifferent amplitude series is designed based on quantitative BER analysis of the specific A×M APPM demapping procedures containing time slot selection and amplitude decision in selected time slot, which are different from traditional ones. Simulation results of 4×4, 4×8 and 4×16 APPM show 4, 3.4 and 6.9 dB SNR gain against traditional APPM scheme respectively. Thus significant BER performance improvement is achieved which helps to enhance reliability of free-space optical communication systems.