- sps = converter_rate / float(bits_per_symbol) / interp / bitrate
- br = converter_rate / float(bits_per_symbol) / interp / sps
+ @param bitrate: desired bitrate or None
+ @type bitrate: number or None
+ @param bits_per_symbol: E.g., BPSK -> 1, QPSK -> 2, 8-PSK -> 3
+ @type bits_per_symbol: integer >= 1
+ @param samples_per_symbol: samples/baud (aka samples/symbol)
+ @type samples_per_symbol: number or None
+ @param decim_rate: USRP decimation factor
+ @type decim_rate: integer or None
+ @param converter_rate: converter sample rate in Hz
+ @type converter_rate: number
+ @param possible_decims: a list of possible rates
+ @type possible_decims: a list of integers
+
+ @returns tuple (bitrate, samples_per_symbol, decim_rate)
+ """