Invention Grant
- Patent Title: Low resolution OFDM receivers via deep learning
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Application No.: US17289555Application Date: 2019-10-29
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Publication No.: US11575544B2Publication Date: 2023-02-07
- Inventor: Jeffrey Andrews , Eren Balevi
- Applicant: Board of Regents, The University of Texas System
- Applicant Address: US TX Austin
- Assignee: Board of Regents, The University of Texas System
- Current Assignee: Board of Regents, The University of Texas System
- Current Assignee Address: US TX Austin
- Agency: Foley & Lardner LLP
- International Application: PCT/US2019/058595 WO 20191029
- International Announcement: WO2020/092391 WO 20200507
- Main IPC: H04L25/02
- IPC: H04L25/02 ; G06N3/08 ; H04B1/00 ; H04B1/40 ; H04L5/00

Abstract:
Various embodiments provide for deep learning-based architectures and design methodologies for an orthogonal frequency division multiplexing (OFDM) receiver under the constraint of one-bit complex quantization. Single bit quantization greatly reduces complexity and power consumption in the receivers, but makes accurate channel estimation and data detection difficult. This is particularly true for OFDM waveforms, which have high peak-to average (signal power) ratio in the time domain and fragile subcarrier orthogonality in the frequency domain. The severe distortion for one-bit quantization typically results in an error floor even at moderately low signal-to-noise-ratio (SNR) such as 5 dB. For channel estimation (using pilots), various embodiments use novel generative supervised deep neural networks (DNNs) that can be trained with a reasonable number of pilots. After channel estimation, a neural network-based receiver specifically, an autoencoder jointly learns a precoder and decoder for data symbol detection.
Public/Granted literature
- US20220014398A1 LOW RESOLUTION OFDM RECEIVERS VIA DEEP LEARNING Public/Granted day:2022-01-13
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