Inter-symbol-interference cancelation in time-domain physical-layer network coding with fractional delay

Decode-and-forward physical-layer network coding (PLNC) is one of the promising high-performance techniques for wireless relay networks, but little has been reported on the case of asynchronous scenarios using practical pulse shaping waveforms. When signals arrive at the relay with symbol level fractional delay, inter-symbol interference (ISI) will occur. This paper presents an iteration-based ISI cancelation scheme for practical asynchronous two-way relay network (TWRN) with fractional delay. Signals from both terminals are separately decoded for ISI reconstruction and elimination. Simulations show that the proposed scheme with even just one iteration can significantly improve the BER performance.

[1]  Toshiaki Koike-Akino,et al.  Denoising Maps and Constellations for Wireless Network Coding in Two-Way Relaying Systems , 2008, IEEE GLOBECOM 2008 - 2008 IEEE Global Telecommunications Conference.

[2]  Petar Popovski,et al.  Wireless network coding by amplify-and-forward for bi-directional traffic flows , 2007, IEEE Communications Letters.

[3]  A. Wittneben,et al.  Spectral Efficient Signaling for Half-duplex Relay Channels , 2005, Conference Record of the Thirty-Ninth Asilomar Conference onSignals, Systems and Computers, 2005..

[4]  Petar Popovski,et al.  Physical Network Coding in Two-Way Wireless Relay Channels , 2007, 2007 IEEE International Conference on Communications.

[5]  Soung Chang Liew,et al.  Channel coding and decoding in a relay system operated with physical-layer network coding , 2008, IEEE Journal on Selected Areas in Communications.

[6]  Shengli Zhang,et al.  On the Synchronization of Physical-Layer Network Coding , 2006, 2006 IEEE Information Theory Workshop - ITW '06 Chengdu.

[7]  Xiaohu You,et al.  Joint LDPC and Physical-Layer Network Coding for Asynchronous Bi-Directional Relaying , 2013, IEEE Journal on Selected Areas in Communications.

[8]  Soung Chang Liew,et al.  Channel-Coded Collision Resolution by Exploiting Symbol Misalignment , 2010, 2010 IEEE International Conference on Communications.

[9]  Sachin Katti,et al.  Embracing wireless interference: analog network coding , 2007, SIGCOMM '07.

[10]  Soung Chang Liew,et al.  > Replace This Line with Your Paper Identification Number (double-click Here to Edit) < 1 , 2022 .

[11]  Soung Chang Liew,et al.  Collision Resolution by Exploiting Symbol Misalignment , 2008, ArXiv.

[12]  Ying-Chang Liang,et al.  Optimal Analogue Relaying with Multi-Antennas for Physical Layer Network coding , 2008, 2008 IEEE International Conference on Communications.

[13]  Soung Chang Liew,et al.  Asynchronous Physical-Layer Network Coding , 2012, IEEE Transactions on Wireless Communications.

[14]  Toshiaki Koike-Akino,et al.  Optimized constellations for two-way wireless relaying with physical network coding , 2009, IEEE Journal on Selected Areas in Communications.

[15]  Fu-Chun Zheng,et al.  Physical Layer Network Coding with Channel and Delay Estimation , 2012, 2012 IEEE Vehicular Technology Conference (VTC Fall).

[16]  Soung Chang Liew,et al.  Physical-layer network coding: Tutorial, survey, and beyond , 2011, Phys. Commun..

[17]  Fu-Chun Zheng,et al.  A simple physical-layer network coding with fractional delay , 2013, 2013 IEEE/CIC International Conference on Communications in China (ICCC).