Datasheet Summary
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STARMAN™ CHANNEL DECODER
FRONT_END INTERFACE: IF input carrier frequency: f = 1.84 MHz Single internal 6 bit A/D converter QPSK demodulation Input symbol frequency: Fs = 1.84 Msymbols/s Digital Nyquist root filter:
- roll-off value of 0.4 Digital carrier loop:
- on-chip quadrature demodulator and tracking loop
- lock detector
- C/N indicator Digital timing recovery:
- internal timing error evaluation, filter and correction Digital AGC:
- internal signal power estimation and filter
- output control signal for AGC (1 bit PWM) FORWARD ERROR CORRECTION: Inner decoder:
- Viterbi soft decoder for convolutional codes, constraint length M=7, Rate 1/2 Deinterleaver block Outer decoder:
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