Pilot-Assisted URLLC Links: Impact of Synchronization Error
Paper i proceeding, 2024

We propose a framework to evaluate the random coding union bound with parameter s (RCUs) on the achievable error probability in the finite-blocklength regime for a pilot-assisted transmission scheme operating over an imperfectly synchronized and memoryless block-fading waveform channel. Unlike previous results, which disregard the effects of imperfect synchronization, our framework utilizes pilots for both synchronization and channel estimation. Additionally, we utilize the saddlepoint approximation to provide a numerically efficient method for evaluating the RCUs bound in this scenario. Our numerical experiments verify the accuracy of the proposed approximation. Moreover, when transmission blocks are received synchronously, numerical results indicate that the number of pilot symbols needed to estimate the fading channel gains to the level of accuracy required in ultra-reliable low-latency communication is also sufficient to acquire sufficiently good synchronization. However, when the blocks are received asynchronously, there can be a significant SNR penalty compared to the synchronous case.

synchronization

channel estimation

pilots

URLLC

Författare

Ahmet Oguz Kislal

Chalmers, Elektroteknik, Kommunikation, Antenner och Optiska Nätverk

Madhavi Rajiv

University of Southern California

Giuseppe Durisi

Chalmers, Elektroteknik, Kommunikation, Antenner och Optiska Nätverk

Erik Ström

Chalmers, Elektroteknik, Kommunikation, Antenner och Optiska Nätverk

Urbashi Mitra

University of Southern California

IEEE International Conference on Communications

15503607 (ISSN)

617-622
9781728190549 (ISBN)

59th Annual IEEE International Conference on Communications, ICC 2024
Denver, USA,

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Ämneskategorier

Telekommunikation

Kommunikationssystem

Signalbehandling

DOI

10.1109/ICC51166.2024.10623062

Mer information

Senast uppdaterat

2024-09-13