Feedforward equalizer for NRZ OOK signals

Hello,

currently I'm working on transmission of NRZ OOK signals generated from bit pattern generator with prbs order of 15 and

would like to do FFE with LMS algorithm to compensate ISI.

I found that there is a matlab function of FFE, but the default constellation is QPSK.

(Constellation — Signal constellation

pskmod(0:3,4,pi/4) (default) | vector

Signal constellation, specified as a vector. The default value is a QPSK constellation generated using this code: pskmod(0:3,4,pi/4).

Data Types: double)

can I adjust the default so that I can utilize for OOK?

If so, I'd like to know how to do.

Thanks

[Sam Jeong]

Hi,

Do you mean FFE as a Feed-Foward Equalizer generally used in SerDes Application?

If is it, I would like to recommend you to use SerDes Toolbox which contains stimulus block for PRBS pattern generation and FFE blocks. It will save your effort.

Stimuls: https://kr.mathworks.com/help/serdes/ref/serdes.stimulus-system-object.html

FFE: https://kr.mathworks.com/help/serdes/ref/ffe.html?searchHighlight=ffe&s_tid=srchtitle_support_results_1_ffe

Regards,

Sam