This paper presents a jitter analysis method for PWM (pulse width modulation) scheme in high-speed serial links. The data rate of PWM with N different pulse widths (PWM-N) scheme is (log2N) x(symbol rate). However it increases the timing jitter of the transmitted signal. The timing jitter is determined by the pulse widths of PWM symbols and the characteristics of the communication channel. The analysis of the first-order systems and the second-order systems demonstrates that data dependent jitter (DDJ) strongly depends on the -3dB frequency and the damping ratio of the systems. The proposed jitter analysis method makes it possible to determine the pulse width of PWM symbols with the known characteristics of the channel.
R. Tang et al., "Jitter Analysis of PWM Scheme in High Speed Serial Link," Proceedings of the 2006 IEEE Instrumentation and Measurement Technology, Institute of Electrical and Electronics Engineers (IEEE), Jan 2006.
The definitive version is available at http://dx.doi.org/10.1109/IMTC.2006.328549
2006 IEEE Instrumentation and Measurement Technology
Electrical and Computer Engineering
Keywords and Phrases
High-Speed Serial Link; Jitter; Pulse Width Modulation
International Standard Serial Number (ISSN)
Article - Conference proceedings
© 2006 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.