Localization in 802. 15.4z Standard

The 802.15.4z standard, still under development, advances the secure ranging protocol by encryption of PHY timestamp sequence using AES-128 encryption algorithm. The paper analyses the key parts of PHY which have a great contribution in range estimation precision, particularly: UWB pulse, channel sounding and timestamp estimation using ciphered sequence. The propagation analysis in UWB channel shows that the frequency selective fading gives worse effects than multipath propagation in the timestamp estimation.