Numerical study of the performance improvement of the APSK transmission system using zero-nulling method.
We have studied the transmission performance of amplitude and phase shift keying (APSK) format theoretically. As there is a trade-off between the performance of amplitude shift keying (ASK) and phase shift keying (PSK) through the extinction ratio of the ASK format, zero-nulling method to improve the performance of the PSK format had been proposed. A demerit of the zero-nulling method is a reduction of the total capacity. This paper described the effectiveness of the zero-nulling method when the total capacity of the system was identical.
Taga
Hidenori
H
National Sun Yat-Sen University, No.70 Lien-Hai Road, Kaohsiung 80424 Taiwan ROC. hidenoritaga@mail.nsysu.edu.tw
Wu
Jyun-Yi
JY
Shih
Wei-Tong
WT
Shu
Seng-Sheng
SS
D003195:Computer Communication Networks / Q000295:instrumentation*; D003198:Computer Simulation; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005336:Fiber Optic Technology / Q000295:instrumentation*; D008962:Models, Theoretical; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*