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(c) Interfaces: -- Provides: data_in (complexShort) -- Uses: data_out (complexShort) D.5 ChannelDemo (a) Description: Simulates a very basic AWGN channel. (b) Properties: -- noise_std_dev; short; Standard deviation of noise -- phase_offset; float; Phase offset in degrees (c) Interfaces: -- Provides: samples_in (complexShort) -- Uses: samples_out (complexShort) D.6 Conv_Dec (a) Description: A convolutional decoder (b) Properties: -- rate_index; short; The index of the decoding rate from the supported rates table. For a custom rate use rate_index 0 -- mode; short; (Unknown description) -- k; short; Input bits at a time (for the custom rate_index=0) with encoder rate k/n -- K; short; Constraint length (for the custom rate_index=0) -- n; short; Output bits at a time for the custom rate_index=0, has to match the number of supplied polynomials (rate_index=0). The encoder rate = k/n 161