The following figure shows the 3-tap Feed Forward equalizer structure for TX. The output of the TX is given by the transfer function tn-1 + tnZ-1 + tn+1Z-2. The TX output depends on the value of tap coefficients.
Figure 1. Block Diagram of the 3-tap Feed Forward Equalizer
The following are the details of coefficients.
- t0: Pre-cursor tap setting. The range is from –0.4 to –0.01, default value is –0.01.
- t1: Main tap. The range is from 0.1 to 1, default value is 1.
t2: Post-cursor tap. The range is from –0.5 to –0.01, default value is –0.01.
TapsFromFile: Explicit feed forward equalizer (FFE) coefficients can be set through this file. If a file is used, it overrides the manual tap settings and automatic generation.
TapsToFile: Output FFE tap coefficients to this file when automatic generation coefficients is used.