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

Claim 14:
15. A Bluetooth transmitter operative on a Bluetooth packet having a preamble part, a header part, and a payload part forming a stream of baseband Bluetooth symbols, the stream of baseband Bluetooth symbols comprising repetition coding whereby each binary value of the header part and payload part is replaced by a first plurality of binary values for a ‘one’ value, and a second plurality of binary values for a ‘zero’ value, thereby forming an original baseband Bluetooth packet, the Bluetooth transmitter operative to mix the symbols of the original baseband Bluetooth packet to a modulation frequency fc(t) to form a modulated Bluetooth packet, where fc(t) is Fc*mod(t,k), and mod(t,k) is a function which has a variation of approximately 30 kHz in a duration of approximately 500 symbols;
mod(t,k) applied exclusively during the header part and the payload part of the baseband Bluetooth packet whereby mod(t,k) reduces frequency spurs of the modulated Bluetooth packet compared to mod(t,k) having a variation of zero.