A New High-Performance Digital FM Modulator and Demodulator for Software-Defined Radio and Its FPGA Implementation

Table 1

Truth table of modified booth encoder.

𝑌𝑖+1	𝑌𝑖	𝑌𝑖−1	Value	𝑋1_𝑏	𝑋2_𝑏	Neg	𝑍
0	0	0	0	1	0	0	1
0	0	1	1	0	1	0	1
0	1	0	1	0	1	0	0
0	1	1	2	1	0	0	0
1	0	0	−2	1	0	1	0
1	0	1	−1	0	1	1	0
1	1	0	−1	0	1	1	1
1	1	1	0	1	0	1	1