FREQUENCY SHIFT KEYING (FSK)-MODULATED SIGNAL DISCRIMINATION

    公开(公告)号:US20230208689A1

    公开(公告)日:2023-06-29

    申请号:US17561877

    申请日:2021-12-24

    CPC classification number: H04L27/144 H04B1/10

    Abstract: A receiver, including: a sampling circuit configured to convert a received analog signal into a digital signal; a variance determination circuit configured to determine a phase difference variance of the digital signal; and a frequency shift keying (FSK) discrimination circuit configured to discriminate, based on the phase difference variance, whether the received analog signal is an FSK-modulated signal.

    Bluetooth receiver, electronic device and method for a Bluetooth receiver

    公开(公告)号:US11843460B2

    公开(公告)日:2023-12-12

    申请号:US17455979

    申请日:2021-11-22

    CPC classification number: H04L1/0045 H04W4/08

    Abstract: A Bluetooth receiver is provided. The Bluetooth receiver comprises interface circuitry configured to receive a receive packet. Further, the Bluetooth receiver comprises physical layer processing circuitry configured to demodulate the receive packet into a bit stream representing a sequence of data symbols. Further, the physical layer configured to determine a number of bits in the bit stream having a highest likelihood of being erroneous as weak-bits and determine locations of the identified weak-bits in the bit stream. The Bluetooth receiver further comprises medium access control layer processing circuitry configured to receive the bit stream and information about the determined locations of the identified weak-bits from the physical layer processing circuitry. Further, the medium access control layer is configured to flip one of the weak-bits and a sequential bit in the bit stream in order to generate a modified bit stream, run a respective cyclic redundancy check on the bit stream and the modified bit stream and compare results of the cyclic redundancy checks on the bit stream and on the modified bit stream.

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