Optimal Ber Minimum Precoder Design for OTFS-Based ISAC Systems

This paper investigates the bit error rate (BER) minimum precoder design for an orthogonal time frequency space (OTFS)-based integrated sensing and communications (ISAC) system, which is considered as a promising technique for enabling future wireless networks. In particular, the BER minimum problem...

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Veröffentlicht in:Proceedings of the ... IEEE International Conference on Acoustics, Speech and Signal Processing (1998) S. 12966 - 12970
Hauptverfasser: Wu, Jun, Yuan, Weijie, Wei, Zhiqiang, Yan, Jinjin, Ng, Derrick Wing Kwan
Format: Tagungsbericht
Sprache:Englisch
Veröffentlicht: IEEE 14.04.2024
Schlagworte:
BER
Bit error rate
Costs
ISAC
Iterative methods
OTFS
precoder
Sensors
Speech processing
Time-frequency analysis
Wireless networks
ZF/MMSE equalization
ISSN:2379-190X
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Zusammenfassung:This paper investigates the bit error rate (BER) minimum precoder design for an orthogonal time frequency space (OTFS)-based integrated sensing and communications (ISAC) system, which is considered as a promising technique for enabling future wireless networks. In particular, the BER minimum problem takes into account the maximized available transmission power and the required sensing performance. We devise the precoder from the perspective of delay-Doppler (DD) domain by exploiting the equivalent DD channel. To address the non-convex design problem, we resort to minimizing the lower bound of the derived average BER. Afterwards, we propose a computationally iterative method to solve the dual problem at low cost. Simulation results verify the effectiveness of our proposed precoder and reveal the interplay between sensing and communication for dual-functional precoder design.
ISSN:2379-190X
DOI:10.1109/ICASSP48485.2024.10446140