Calculate FIR rolloff filter coeficients

rolloff rate distribution rate
over samplings number of taps
output format scaling factor
Source code : calcroll-2.7.2.tar.gz (5.7KB), MD5 (calcroll-2.7.2.tar.gz) = 189ea9583391ac81c1556e4d745ed511
[fig.1 FIR Coefficients example of a roll filter] [fig.2 Frequency response examples of the Niquist filters]
FIR rolloff filter tap coefficients niquist filter frequency response
[fig.3 Example of the 16QAM base-bnad signal] [fig.4 The consteration example of the Π / 4 shift QPSK]
eye pattern
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