Complex signal limiting

Details Complex signal limiting Complex signal limiting

H - Electricity

04

B

H04B 15/00 (2006.01) G06F 1/035 (2006.01) H04B 1/10 (2006.01) H04Q 7/22 (2006.01)

Patent

CA 2187479

Each complex signal sample a(k)+jb(k) of a frequency modulated signal is limitedin order to reduce co-channel interference. The limiting is performed efficiently in a digital signal processor by determining a ratio r with a magnitude less than one, equal to b(k)/a(k) in a first case and a(k)/b(k) in a second case, determining from a look-up table a variable p with a magnitude equal to 1/?(1+r2), and determining a number equal to sgn(a(k))p(1 + jr) in the first case and sgn(b(k3)p(r + j) in the second case as the limited output signal sample.

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