Jitter Characterization of Pseudo-Random Bit Sequences Using Incoherent Sub-Sampling
In this paper, jitter analysis algorithms for characterizing timing jitter of multi-Gbps pseudorandom bit sequences (PRBSs) are presented. For signal acquisition, incoherent sub-sampling is employed to increase the effective sampling rate of a digitizer and to simplify its signal acquisition architecture by removing the need for tuning synchronization circuits. As a substitute for these circuits, algorithms for signal clock recovery (CR) and waveform reconstruction from the acquired data are developed in this research. The algorithms utilize peak identification of the sampled signal spectrum and the sparsity of the reconstructed waveform in the frequency domain as decision making criteria for accurate signal reconstruction. The jitter value of such a reconstructed waveform is quantified with the use of a wavelet based denoising method to generate a self-reference signal against which zero-crossing times are compared to generate jitter statistics. In addition, the data dependent jitter components can be differentiated from the original jitter by analyzing zero-crossing discrepancies of the self-reference signal.
Hyun Choi Abhijit Chatterjee
School of Electrical and Computer Engineering Georgia Institute of Technology Atlanta, Georgia 30332-0250
国际会议
2010 19th IEEE Asian Test Symposium(第19届IEEE亚洲测试技术学术会议 ATS 2010)
上海
英文
9-14
2010-12-01（万方平台首次上网日期，不代表论文的发表时间）