A novel trellis coded overlapping amplitude and pulse position modulation scheme for gamma-gamma channel free-space optical communication
A novel trellis coded overlapping amplitude and pulse position modulation scheme for gamma-gamma channel free-space optical communication
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DOI：
10.1109/cc.2016.7464123
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发表时间：
2016-05
影响因子：
4.1
通讯作者：
Kaimin Wang;Bo Liu;Lijia Zhang;Qi Zhang;Qinghua Tian;X. Xin
中科院分区：
文献类型：
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作者：
Kaimin Wang;Bo Liu;Lijia Zhang;Qi Zhang;Qinghua Tian;X. Xin
为了提高自由空间光通信（FSO）系统的误码率（BER）性能，提出了一种新的网格编码-4 ×8重叠幅度和脉冲位置调制（TC-4×8AOPPM）方案。此外，还设计了一个未编码的AOPPM参考方案。该方案通过设计适用于GG信道的译码和解调方法来降低误码率。8、16和64状态TC-4×8AOPPM的仿真结果分别比传统TC-4×8AOPPM方案具有2.5- 3.3dB的SNR增益。因此，实现了显着的BER性能的改善，也提高了FSO系统的可靠性。
A novel trellis coded-4×8 overlapping amplitude and pulse position modulation (TC-4×8AOPPM) scheme is proposed to enhance bit error rate (BER) performance of free-space optical communication (FSO) system. In addition, an uncoded AOPPM referential scheme is also designed. The schemes manage to decrease BER by designing gamma-gamma (GG) channel applicable decoding and demodulation methods. Simulation results of 8, 16 and 64-state TC-4×8AOPPM show 2.5–3.3 dB SNR gain against traditional TC-4×8AOPPM scheme respectively. Thus significant BER performance improvement is achieved and the reliability of the FSO system is also enhanced.