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2.5 Gb/s FSO-OFDM系统调制方式研究

Research on Modulation Mode of 2.5 Gb/s FSO-OFDM System
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摘要 OFDM是一种能有效抵御大气散射效应的调制技术,提出了一种实现FSO-OFDM传输的系统方案。对速率为2.5Gb/s的FSO-OFDM系统在不同的天气条件下进行了仿真研究。仿真分析了不同的调制方式和不同的子载波数时FSO-OFDM系统的误码率和光信噪比。仿真结果表明,与采用16PSK调制方式相比,采用16QAM方式系统将具有更低的误码率和更高的Q值。 In order to resist the scattering effect efficiently, a system design for the free space optical orthogonal frequency division multiplexing communication （FSO-OFDM） was proposed. The performance of 2.5 Gb/s FSO-OFDM system with different modulation modes and different numbers of sub-carrier was simulated under weather conditions. And the BER and SNR of the FSO-OFDM system were analyzed for different modulation modes and sub carriers. Simulation results show that, compared with 16PSK modulation mode, the system applying 16QAM mode can obtain lower BER and higher Q value.
作者 刘一 王春安 何影记
机构地区 广东技术师范学院电信学院
出处 《半导体光电》 CAS CSCD 北大核心 2014年第5期881-884,共4页 Semiconductor Optoelectronics
基金 国家自然科学基金项目(11174061)
关键词 FSO OFDM QAM PSK 散射信道 FSO OFDM QAM PSK scattering channel
分类号 J653 [艺术—音乐]
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参考文献10

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半导体光电
2014年 第5期

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