Systems, methods, and devices shape waveforms associated with transmission of data from wireless communications devices. Methods may include identifying, using a processing device, a plurality of portions of a Bluetooth packet for transmission from a wireless communications device, the plurality of portions comprising a first portion and a second portion. Methods may also include determining, using the processing device, a first transmit power associated with the first portion and a second transmit power associated with the second portion, the determining being based, at least in part, on whether the first portion or second portion is used in packet detection. Methods may further include transmitting the first portion of the Bluetooth packet using the first transmit power, and transmitting the second portion of the Bluetooth packet using the second transmit power.