Open AccessA method of adaptive pulse width modulation for multiple-valued data transmission
Author(s) -
Sun Hua-Juan,
Yan Xiao-Hong,
Hao Xue-Yuan
Publication year - 2015
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.64.018402
Subject(s) - pulse width modulation , jitter , emphasis (telecommunications) , computer science , transmission (telecommunications) , coaxial cable , signal (programming language) , modulation (music) , attenuation , data transmission , analog transmission , electronic engineering , optics , acoustics , telecommunications , physics , analog signal , power (physics) , computer network , quantum mechanics , engineering , cable gland , programming language
The non-ideal characteristics such as dielectric loss and skin effect of coaxial cables etc can cause attenuation of the high-frequency component of the signals, making it difficult for the receiver to interpret the signal, thereby greatly reducing the data rate. Pulse width modulation (PWM) pre-emphasis technique, which has been very good to use in the binary signal, utilizes time-domain information processing to increase the data rate. We introduce the new adaptive PWM pre-emphasis method to further eliminate the data-dependent jitter, which can dynamically compensate for the transmission loss of multiple-valued data with strong or weak pre-emphasis. The results of eye diagrams show that this method can improve the quality of signal transmission.