# Low Complexity LMMSE Receiver for OTFS

arXiv: https://arxiv.org/abs/1910.01350 · HTML: https://mlsanity.com/paper/1910.01350/

## Key facts

- Cited by 3 papers in the map (data through 14 Oct 2026).
- First posted on arXiv 3 Oct 2019.

## Built on by (most cited first, 3 of 3)

- [Symbol Detection for Coarsely Quantized OTFS](https://mlsanity.com/paper/2309.11759/) (2023)
- [2D-RC: Two-Dimensional Neural Network Approach for OTFS Symbol Detection](https://mlsanity.com/paper/2311.08543/) (2023)
- [Autonomous Discovery of Wireless Communications Algorithms](https://mlsanity.com/paper/2607.17762/) (2026)

## Abstract (arXiv)

Orthogonal time frequency space modulation is a two dimensional (2D) delay-Doppler domain waveform. It uses inverse symplectic Fourier transform (ISFFT) to spread the signal in time-frequency domain. To extract diversity gain from 2D spreaded signal, advanced receivers are required. In this work, we investigate a low complexity linear minimum mean square error receiver which exploits sparsity and quasi-banded structure of matrices involved in the demodulation process which results in a log-linear order of complexity without any performance degradation of BER.