On the Selection of a Sampling Filter Bandwidth for a Digital Data Detector
M.K. Simon · IRE Transactions on Communications Systems · 1972
We consider here the problem of selecting the lowpass sampling bandwidth for a digital mechanization of a matchedfilter bit-synchronizer combination. In particular, if digital data at a rateRbits/second plus Gaussian noise is passed through a filter of bandwidthKRand then sampled at the Nyquist rate, i.e.,2 KR, then how small can we chooseKwithout paying an appreciable penalty in the SNR performance of the data detector?