Long range bluetooth low energy synchronization system

A mobile device comprising:

• a controller;
• and
• a receiver connected to the controller and configured to receive a signal via a communication protocol, the receiver being further configured to:
• accumulate values of a phase signal based on an over sampling rate (OSR) to estimate one or more symbols of the received;
• de-map the estimated one or more symbols to accumulate OSR samples of the estimated one or more symbols to generate inner-pattern de-mapped symbol estimations;
• accumulate the inner-pattern de-mapped symbol estimations;
• determine a peak position based on the accumulated inner-pattern de-mapped symbol estimations;
• select an accumulated inner-pattern de-mapped symbol estimation from the accumulated inner-pattern de-mapped symbol estimations based on the peak position;
• and
• correlate the selected accumulated inner-pattern de-mapped symbol estimation based on a reference signal.

A long range Bluetooth low energy receiver, comprising:

• a synchronizer that is configured to:
• accumulate values of a phase signal based on an over sampling rate (OSR) to estimate one or more symbols of a received signal;
• de-map the estimated one or more symbols to accumulate OSR samples of the estimated one or more symbols to generate inner-pattern de-mapped symbol estimations;
• accumulate the inner-pattern de-mapped symbol estimations and to determine a peak position based on the accumulated inner-pattern de-mapped symbol estimations;
• select an accumulated inner-pattern de-mapped symbol estimation from the accumulated inner-pattern de-mapped symbol estimations based on the peak position;
• correlate the selected accumulated inner-pattern de-mapped symbol estimation based on a reference signal, the correlation of the accumulated inner-pattern de-mapped symbol estimation being independent of the OSR due to the selection of the accumulated inner-pattern de-mapped symbol estimation from the accumulated inner-pattern de-mapped symbol estimations;
• generate an indication signal based on the correlation of the selected accumulated inner-pattern de-mapped symbol estimation based on the reference signal;
• and
• generate timing information based on the indication signal and the peak position;
• and
• a demodulator configured to demodulate the received signal based on the timing information.