Non-Coherent Multi-User Short-Packet Communications with MOCZ: Techniques, Challenges, and Future Directions

Öz

Non-coherent communication schemes have attracted increasing interest for multi-user short-packet transmissions due to their robustness to channel uncertainty and suitability for ultra-reliable low-latency communication (URLLC). Modulation on conjugate-reciprocal zeros (MOCZ) offers an alternative signaling paradigm by encoding information into the zeros of the transmitted signal, enabling data recovery without explicit channel estimation. This paper presents a conceptual study of multi-user MOCZ (MU-MOCZ) systems, focusing on two representative multiplexing strategies: time-division multiplexed (TDM) MU-MOCZ, where users are served sequentially, and z-domain multiplexed (ZDM) MU-MOCZ, which enables simultaneous transmissions using distinct regions of the z-plane. For both schemes, the underlying principles of zero allocation and z-domain organization are discussed, supported by illustrative examples that clarify the operational behavior of the respective multi-user frameworks. The paper highlights key design considerations and trade-offs associated with multi-user MOCZ signaling while preserving its non-coherent nature, and outlines potential research directions toward scalable MU-MOCZ frameworks for next-generation short-packet communication systems.

Anahtar Kelimeler

• Internet of things
• MOCZ
• Non-coherent
• Short packet communication
• Polynomial zeros
• z-transform

Kaynakça

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