Over the years, two major approaches to SERDES simulation have emerged and gained popularity: time-domain (or bit-by-bit) and statistical. Both are used to build the eye diagram and bit-error ratio (BER), and each has its benefits and limitations.
Statistical analysis is capable of reaching BER levels as low as 10-12 and beyond. Still, statistical simulation is unable to consider some important effects/impairments, mostly associated with non-stationary or non-linear behavior such as:
- Correlation of logical states in the input pattern
- Data-dependence of transition waveform shapes, manifesting non-LTI behavior
- Accurate consideration of transmit jitter and noise, including data-dependent
This white paper proposes a way to accurately consider all these effects in a single statistical analysis flow.