Laser & Optoelectronics Progress, Volume. 52, Issue 10, 100605(2015)
Hybrid MPPM Modulation Scheme Based on Modified BPSK in Atmospheric Optical Communication
Considering the conventional multi-pulse position modulation (MPPM) in free atmosphere optical communication, a hybrid MPPM modulation scheme based on modified binary phase shift keying (BPSK) is proposed. In the scheme, BPSK-modulated optical pulses are transmitted in a BPSK-MPPM hybrid frame and as the transmitted information is carried by both position and phase of the transmitted pulse, the change of optical pulse position is used to transmit more bits. The modified system model, channel transmission characteristics, bandwidth utilization, transmission efficiency and channel capacity are researched and measured, which are also compared with those of traditional schemes. Simulation results show that bandwidth utilization and transmission efficiency of the proposed scheme are higher than those of the ordinary schemes. In addition, the channel capacity in the hybrid MPPM frame construction including protected slots is also higher than that of the ordinary schemes.
Get Citation
Copy Citation Text
Liang Luyang, Meng Wen, Li Yunxia, Zhang Wenjie, Han Xiaofei. Hybrid MPPM Modulation Scheme Based on Modified BPSK in Atmospheric Optical Communication[J]. Laser & Optoelectronics Progress, 2015, 52(10): 100605
Category: Fiber Optics and Optical Communications
Received: Apr. 13, 2015
Accepted: --
Published Online: Oct. 8, 2015
The Author Email: Luyang Liang (x_311@qq.com)