Dual-Code Phase Compensation for Integrated Ranging and Sensing in IEEE 802.15.4z/4ab UWB Systems

This preprint presents a dual-code phase-compensation receiver for reusing authorized IEEE 802.15.4z/4ab secure-ranging observations for simultaneous ranging and sensing. It distinguishes sequence-reference coordinates from physical common phase, derives conditional sidelobe-whitening gain, and reports digital-twin, fixed-point RTL-simulation, and real-respiration-backend replay evidence. The current matched-replica implementation is the zero-reference-phase special case of the general normalization equation in companion Chinese patent application CN202511981942. The fixed-code anchor provides the common-phase reference, while dynamic STS/RIF observations provide slow-time sensing measurements with statistically decorrelating off-peak leakage. The reported results are pre-silicon and do not constitute FPGA timing, hardware-in-the-loop, production-security, complete PHY/RF/MAC, or production qualification. The package contains the article source, figures, Chinese theory and evidence mappings, and compact verification summaries. It excludes security material, complete RTL, the production respiration implementation, third-party standards, personal data from the patent request form and the full patent application PDF. The companion patent application reference indicates application status only and does not imply patent grant or legal validity. A related manuscript was submitted to IEEE Transactions on Wireless Communications on 5 November 2026 and is currently under review (Manuscript ID: Paper-TW-Nov-26-4031). This Zenodo preprint contains subsequent technical corrections and clarifications and is not the accepted or published journal article.