Title :
Jitter Analysis of PWM Scheme in High Speed Serial Link
Author :
Tang, Rui ; Kim, Yong-Bin ; Choi, Minsu ; Lombardi, Fabrizio
Author_Institution :
Dept. of Electr. & Comput. Eng., Northeastern Univ., Boston, MA
Abstract :
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) times (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
Keywords :
pulse width modulation; radio links; timing jitter; wireless channels; communication channel; data dependent jitter; first-order systems; high speed serial link; jitter analysis; pulse width modulation scheme; second-order systems; timing jitter; Clocks; Communication channels; Digital systems; Frequency; Optical signal processing; Pulse width modulation; Pulse width modulation inverters; Signal analysis; Space vector pulse width modulation; Timing jitter; high-speed serial link; jitter; pulse width modulation;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 2006. IMTC 2006. Proceedings of the IEEE
Conference_Location :
Sorrento
Print_ISBN :
0-7803-9359-7
Electronic_ISBN :
1091-5281
DOI :
10.1109/IMTC.2006.328549
