A circuit arrangement comprising: a first detection circuit configured to evaluate signal data of a carrier channel to identify a timing location of a synchronization signal within the signal data; a second detection circuit configured to, using the timing location as a reference point, extract a first candidate synchronization signal from a first timing location of the signal data and to extract a second candidate synchronization signal from a second timing location of the signal data; and a decision circuit configured to analyze the first candidate synchronization signal and the second candidate synchronization signal to determine a duplex mode of the carrier channel by determining which of the first candidate synchronization signal or the second candidate synchronization signal has the higher correlation with one or more predefined synchronization signals by: comparing the first candidate synchronization signal and the second candidate synchronization signal with each of a plurality of predefined synchronization signals to obtain a plurality of correlation metrics for the first candidate synchronization signal and a plurality of correlation metrics for the second candidate synchronization signal; identifying the highest-valued correlation metric of the plurality of correlation metrics for the first candidate synchronization signal as a first correlation metric and identifying the highest-valued correlation metric of the plurality of correlation metrics for the second candidate synchronization signal as a second correlation metric; and identifying which of the first correlation metric or the second correlation metric is higher to determine which of the first candidate synchronization signal or the second candidate synchronization signal has the higher correlation with the plurality of predefined synchronization signals. a first detection circuit configured to evaluate signal data of a carrier channel to identify a timing location of a synchronization signal within the signal data; a second detection circuit configured to, using the timing location as a reference point, extract a first candidate synchronization signal from a first timing location of the signal data and to extract a second candidate synchronization signal from a second timing location of the signal data; and a decision circuit configured to analyze the first candidate synchronization signal and the second candidate synchronization signal to determine a duplex mode of the carrier channel by determining which of the first candidate synchronization signal or the second candidate synchronization signal has the higher correlation with one or more predefined synchronization signals by: comparing the first candidate synchronization signal and the second candidate synchronization signal with each of a plurality of predefined synchronization signals to obtain a plurality of correlation metrics for the first candidate synchronization signal and a plurality of correlation metrics for the second candidate synchronization signal; identifying the highest-valued correlation metric of the plurality of correlation metrics for the first candidate synchronization signal as a first correlation metric and identifying the highest-valued correlation metric of the plurality of correlation metrics for the second candidate synchronization signal as a second correlation metric; and identifying which of the first correlation metric or the second correlation metric is higher to determine which of the first candidate synchronization signal or the second candidate synchronization signal has the higher correlation with the plurality of predefined synchronization signals. comparing the first candidate synchronization signal and the second candidate synchronization signal with each of a plurality of predefined synchronization signals to obtain a plurality of correlation metrics for the first candidate synchronization signal and a plurality of correlation metrics for the second candidate synchronization signal; identifying the highest-valued correlation metric of the plurality of correlation metrics for the first candidate synchronization signal as a first correlation metric and identifying the highest-valued correlation metric of the plurality of correlation metrics for the second candidate synchronization signal as a second correlation metric; and identifying which of the first correlation metric or the second correlation metric is higher to determine which of the first candidate synchronization signal or the second candidate synchronization signal has the higher correlation with the plurality of predefined synchronization signals.