Patent ID: 11916679
Assignee: SILICON LABORATORIES INC.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A bitstream modifier for modification of a Bluetooth baseband transmit data packet having a preamble part, a header part, and a payload part, the bitstream modifier configured to modify at least one of the header part or the payload part, where the header part or payload part is formed using repetition coding comprising transmission of a first fixed bit pattern for a ‘0’ value and a second fixed bit pattern for a ‘1’ value of the header part or payload part;
the bitstream modifier configured to increase the randomness of a repetition coding by multiplication of a sequence of header part or payload part with a bitstream modifier comprising a bit sequence, and where the bitstream modifier has an inverse function for restoration of the header part and payload part in a receiver receiving a bitstream modified header part or payload part;
the modified Bluetooth baseband transmit data packet header part and payload part thereby having reduced spectral peaks and where the bit sequence comprises a pseudorandom sequence of binary values, each binary value comprising one of two different binary values;
the pseudorandom sequence selected to reduce a periodicity length of the repetition coding.