Uwb electronic device and method of operating thereof

An Ultra Wide Band (UWB) device comprising:

• processing circuitry configured to cause the UWB device to,
• receive a plurality of receive signals from an external device, each of the plurality of receive signals including a plurality of code symbols,
• accumulate a subset of receive signals among the plurality of receive signals to generate accumulation samples,
• perform first matched filtering on all code symbols among the accumulation samples to obtain a first matched filtering result,
• perform second matched filtering on a subset of code symbols among the accumulation samples to obtain a second matched filtering result,
• estimate a boundary code symbol based on the first matched filtering result, and
• estimate a first number and a Carrier Frequency Offset (CFO) based on the boundary code symbol, the first matched filtering result and the second matched filtering result to obtain an estimated first number and an estimated CFO, the first number being a number of receive signals from among the plurality of receive signals including only idle code symbols.

An Ultra Wide Band (UWB) communication system comprising:

• a transmitter configured to transmit a plurality of transmit signals to an external UWB device, each of the plurality of transmit signals including a plurality of first code symbols;
• and
• processing circuitry configured to cause the UWB communication system to,
• receive a plurality of receive signals from the external UWB device, each of the plurality of receive signals including a plurality of second code symbols,
• accumulate a subset of receive signals among the plurality of receive signals to generate accumulation samples,
• perform first matched filtering on all second code symbols among the accumulation samples to obtain a first matched filtering result,
• perform second matched filtering on a subset of second code symbols among the accumulation samples to obtain a second matched filtering result,
• estimate a boundary code symbol based on the first matched filtering result, and
• estimate a first number and a Carrier Frequency Offset (CFO) based on the boundary code symbol, the first matched filtering result and the second matched filtering result, the first number being a number of receive signals from among the plurality of receive signals including only idle code symbols.