www.gusucode.com > MIMO_OFDM系统的matlab仿真程序以及GUI界面的实现源码程序 > CH9/rx_init_viterbi.m
function rx_init_viterbi global SimulationConstants; global prev_state; global prev_state_outbits; prev_state = zeros(64, 2); prev_state_outbits = zeros(64, 2, 2); for state = 0:63 state_bits = de2bi(state, 6); input_bit = state_bits(1); for transition = 0:1 prev_state_bits = [state_bits(2:6) transition]; prev_state(state+1, transition+1) = bi2de(prev_state_bits); prev_state_outbits(state+1, transition+1, 1) = 2*(rem(sum(SimulationConstants.ConvCodeGenPoly(1,:).* ... [input_bit prev_state_bits]),2)) - 1; prev_state_outbits(state+1, transition+1, 2) = 2*(rem(sum(SimulationConstants.ConvCodeGenPoly(2,:).* ... [input_bit prev_state_bits]),2)) - 1; end end