Low-Complexity Linear Signal Detection on Two-Way Quantize-Forward Relay Channel

This letter considers a half-duplex two-way quantize-forward relay channel, where a relay quantizes the phases of the received signals and broadcasts the reconstructed signal to users to help them exchange messages. However, the existing maximum-likelihood (ML) detection method considers all possibl...

Full description

Saved in:
Bibliographic Details
Published in:IEEE wireless communications letters 2023-12, Vol.12 (12), p.2208-2212
Main Authors: Park, Jihyun, Jin, Xianglan
Format: Article
Language:English
Subjects:
Complexity
Complexity theory
Half-duplex system
Linear combining
Maximum likelihood decoding
maximum-likelihood
phase shift keying
Quantization (signal)
quantize-forward
Relay
Relays
Signal detection
Signal to noise ratio
Symbols
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This letter considers a half-duplex two-way quantize-forward relay channel, where a relay quantizes the phases of the received signals and broadcasts the reconstructed signal to users to help them exchange messages. However, the existing maximum-likelihood (ML) detection method considers all possible signals from the transmitter and the relay, leading to extremely high detection complexity at the receiver. To address this issue, we propose a linear combining (LC) detection method and its simplified version, which significantly reduce the computational complexity while achieving reasonable symbol error rates compared to the ML detection.
ISSN:2162-2337
2162-2345
DOI:10.1109/LWC.2023.3314808