Network coding on the physical-layer has recently been widely discussed as a potentially promising solution to the wireless access problem in a relay network. However, the existing research on physical-layer network coding (PNC), usually assumes that the symbol timing of the nodes is fully synchronized and hardly investigates the unavoidable symbol timing errors. Similar to many telecommunication systems, symbol timing plays a critical role in PNC and precise alignment has to be provided for the encoding. In this work, we propose a novel symbol timing algorithm with a low oversampling factor (samples per symbol) based on the a priori knowledge of the transmitted pulse shape. The proposed algorithm has the dual advantages of the low oversampling rate and high precision. The mean square error (MSE) performance is verified by simulations to be at least one order of magnitude better than that of the conventional optimum phase (OP) algorithm for a signal noise ratio (SNR) greater than 5dB.
Xiaoyu DANG
Nanjing University of Aeronautics and Astronautics
Qiang LI
Nanjing University of Aeronautics and Astronautics
Hao XIAO
Nanjing University of Aeronautics and Astronautics
Cheng WAN
Nanjing University of Aeronautics and Astronautics
The copyright of the original papers published on this site belongs to IEICE. Unauthorized use of the original or translated papers is prohibited. See IEICE Provisions on Copyright for details.
Copy
Xiaoyu DANG, Qiang LI, Hao XIAO, Cheng WAN, "Node Symbol Timing Error Estimator for Physical-Layer Network-Coded Relay" in IEICE TRANSACTIONS on Fundamentals,
vol. E98-A, no. 12, pp. 2733-2737, December 2015, doi: 10.1587/transfun.E98.A.2733.
Abstract: Network coding on the physical-layer has recently been widely discussed as a potentially promising solution to the wireless access problem in a relay network. However, the existing research on physical-layer network coding (PNC), usually assumes that the symbol timing of the nodes is fully synchronized and hardly investigates the unavoidable symbol timing errors. Similar to many telecommunication systems, symbol timing plays a critical role in PNC and precise alignment has to be provided for the encoding. In this work, we propose a novel symbol timing algorithm with a low oversampling factor (samples per symbol) based on the a priori knowledge of the transmitted pulse shape. The proposed algorithm has the dual advantages of the low oversampling rate and high precision. The mean square error (MSE) performance is verified by simulations to be at least one order of magnitude better than that of the conventional optimum phase (OP) algorithm for a signal noise ratio (SNR) greater than 5dB.
URL: https://globals.ieice.org/en_transactions/fundamentals/10.1587/transfun.E98.A.2733/_p
Copy
@ARTICLE{e98-a_12_2733,
author={Xiaoyu DANG, Qiang LI, Hao XIAO, Cheng WAN, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={Node Symbol Timing Error Estimator for Physical-Layer Network-Coded Relay},
year={2015},
volume={E98-A},
number={12},
pages={2733-2737},
abstract={Network coding on the physical-layer has recently been widely discussed as a potentially promising solution to the wireless access problem in a relay network. However, the existing research on physical-layer network coding (PNC), usually assumes that the symbol timing of the nodes is fully synchronized and hardly investigates the unavoidable symbol timing errors. Similar to many telecommunication systems, symbol timing plays a critical role in PNC and precise alignment has to be provided for the encoding. In this work, we propose a novel symbol timing algorithm with a low oversampling factor (samples per symbol) based on the a priori knowledge of the transmitted pulse shape. The proposed algorithm has the dual advantages of the low oversampling rate and high precision. The mean square error (MSE) performance is verified by simulations to be at least one order of magnitude better than that of the conventional optimum phase (OP) algorithm for a signal noise ratio (SNR) greater than 5dB.},
keywords={},
doi={10.1587/transfun.E98.A.2733},
ISSN={1745-1337},
month={December},}
Copy
TY - JOUR
TI - Node Symbol Timing Error Estimator for Physical-Layer Network-Coded Relay
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 2733
EP - 2737
AU - Xiaoyu DANG
AU - Qiang LI
AU - Hao XIAO
AU - Cheng WAN
PY - 2015
DO - 10.1587/transfun.E98.A.2733
JO - IEICE TRANSACTIONS on Fundamentals
SN - 1745-1337
VL - E98-A
IS - 12
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - December 2015
AB - Network coding on the physical-layer has recently been widely discussed as a potentially promising solution to the wireless access problem in a relay network. However, the existing research on physical-layer network coding (PNC), usually assumes that the symbol timing of the nodes is fully synchronized and hardly investigates the unavoidable symbol timing errors. Similar to many telecommunication systems, symbol timing plays a critical role in PNC and precise alignment has to be provided for the encoding. In this work, we propose a novel symbol timing algorithm with a low oversampling factor (samples per symbol) based on the a priori knowledge of the transmitted pulse shape. The proposed algorithm has the dual advantages of the low oversampling rate and high precision. The mean square error (MSE) performance is verified by simulations to be at least one order of magnitude better than that of the conventional optimum phase (OP) algorithm for a signal noise ratio (SNR) greater than 5dB.
ER -