TY - GEN
T1 - Performance analysis of QPSK in free-space optical communications channel with phase compensation error
AU - Yin, Xiaoli
AU - Shang, Junyu
AU - Chen, Yulu
AU - Hao, Ji
AU - Li, Li
AU - Xin, Xiangjun
AU - Yu, Chongxiu
PY - 2013
Y1 - 2013
N2 - Performance of free-space optical (FSO) links employed quadrature phase shift keying (QPSK) modulation with phase compensation error over Gamma-Gamma turbulent channel is investigated in this paper. By considering the key factors of weather condition, additional noise and phase noise, the closed-form expressions of symbol error rate (SER) are derived by employing the hyper-geometric functions substitution method. Numerical results show that for FSO system, SER must be the trade off between transmission distance and weather condition, but it suffers more from the weather condition. The effects of imperfect phase compensation on system performance are also studied. Phase noise, which is described by phase compensation error variance parameter σ2Δ, will lead to great degradation to system SER. Increased system signal to noise rate (SNR) helps to increase the system tolerance to σ2Δ and the maximum tolerable σ2Δ is around 10° for all weather conditions.
AB - Performance of free-space optical (FSO) links employed quadrature phase shift keying (QPSK) modulation with phase compensation error over Gamma-Gamma turbulent channel is investigated in this paper. By considering the key factors of weather condition, additional noise and phase noise, the closed-form expressions of symbol error rate (SER) are derived by employing the hyper-geometric functions substitution method. Numerical results show that for FSO system, SER must be the trade off between transmission distance and weather condition, but it suffers more from the weather condition. The effects of imperfect phase compensation on system performance are also studied. Phase noise, which is described by phase compensation error variance parameter σ2Δ, will lead to great degradation to system SER. Increased system signal to noise rate (SNR) helps to increase the system tolerance to σ2Δ and the maximum tolerable σ2Δ is around 10° for all weather conditions.
KW - atmospheric turbulence channel
KW - free-space optical
KW - hyper-geometric function substitution
KW - phase compensation error
KW - symbol error rate
UR - http://www.scopus.com/inward/record.url?scp=84893310488&partnerID=8YFLogxK
U2 - 10.1109/WOCC.2013.6676453
DO - 10.1109/WOCC.2013.6676453
M3 - Conference contribution
AN - SCOPUS:84893310488
SN - 9781467356992
T3 - Proceedings - 2013 Wireless and Optical Communications Conference, WOCC 2013
SP - 640
EP - 644
BT - Proceedings - 2013 Wireless and Optical Communications Conference, WOCC 2013
T2 - 22nd Wireless and Optical Communications Conference, WOCC 2013
Y2 - 16 May 2013 through 18 May 2013
ER -