A study on performance improvement of the interpolation with a half-band filter
Hang Zhang, M. Xenfors · 2002
Usually, in an all-digital receiver, a local clock samples the received waveform at a low sampling rate (f/sub s/=2/T or 4/7, T is the symbol interval). Then an interpolator is used for generating the corresponding interpolants which synchronize with the timing of the input signal. By introducing a half-band filter between the matched filter and a simple polynomial-based interpolator, the performance of a receiver is improved.