# Inter-Symbol Interference (ISI) channels

Is there any open and free data-set for digital ISI channels? I want to have a variety of ISI channels' taps, such as $$h[k]$$ here. Especially looking for BPSK channels.

• Note that a channel model will work for any modulation -- how the signal was modulated (BPSK or otherwise) is usually irrelevant.
– MBaz
Sep 25 '18 at 15:42
• @MBaz That's not 100% correct, if I use BPSK modulation I assume I don't have 'Q' channel, only 'I' so the taps should be non-complex. Sep 25 '18 at 15:46
• Yeah, but the point is, in a wireless channel some of the energy in the 'I' channel will spill to the 'Q' channel, so you really need both in the receiver. The taps should be complex even if you don't transmit in quadrature.
– MBaz
Sep 25 '18 at 16:25
• Exactly as MBaz has stated, consider in all typical applications for BPSK there will be offsets between the transmitter and receiver carriers (hence the need for carrier recovery) so while in the channel the transmit signal will be rotating (through I and Q equally) relative to the receiver at the carrier offset. Sep 25 '18 at 16:49