Instructions
Scroll left on the PS3 menu. Select the "Settings" option via the toolbox icon.
Scroll down from the drop-down menu and select "Accessory Settings."
Select "Register Bluetooth Device." From the option menu, select "Register Headset/Microphone/Headphones." Place your headset into pairing mode to search for the PS3 Bluetooth signal. Once your Bluetooth is in pairing mode, select "Start Scanning."
Enter the pairing code when prompted. If you do not have a code, the default code is "0000." Scroll back to the main settings menu. Select "Audio Device Settings." Change both the "Input" and "Output" device names to the name of your headset.