Do they really implement a partial response for digital mod

I have read the Proakis the digital communications book.
In the chapter 5, they talk about partial response of the g(t) impulse.
I really want to know if there are implementations of this partial response in the product we are using today.
Could some one coperating with these related products please help me out.

Re: Do they really implement a partial response for digital

In real world systems, signals are composite of fundamental and harmonics, distorted to some extend, and with the use of PLL and some frequency offset and slight mismatches in RFIC or even in RF PCB, especially in FR4, you see:

In time domain, peaks move from time to time.
In frequency domain, peaks move from frequency to frequency.
In short, peak is like a floating beacon.

Therefore, peak detection is good to have, but ideal to achieve.
Especially in high frequency circuits, it is impractical.
Partial detection reduces the hardware and firmware complexity.
Although errors could occur, but this is resolved by encoding.

Whether peak pr partial detection, the implementation is only different in level detection. This does not affect the kind of digital modulation technique as the technique itself is independent, such as PSK and FSK related, for example BPSK, QPSK and etc are not affected.
However this is known to only affect amplitude modulation.