Asynchronous Convolutional-Coded Physical-Layer Network Coding
作者： Qing Yang , Soung Chang Liew
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摘要: This paper investigates the decoding process of asynchronous convolutional-coded physical-layer network coding (PNC) systems. Specifically, we put forth a layered framework for PNC consisting three layers: symbol realignment layer, codeword and joint channel-decoding (Jt-CNC) layer. Our can deal with phase asynchrony (phase offset) arrival-time (symbol misalignment) between signals simultaneously transmitted by multiple sources. A salient feature this is that it handle both fractional integral misalignments. For instead Jt-CNC, previously proposed algorithms (e.g., XOR-CD reduced-state Viterbi algorithms) also be used our to general Jt-CNC algorithm, based on belief propagation, BER-optimal synchronous near optimal PNC. Extending beyond convolutional codes, further generalize algorithm all cyclic codes. simulation shows outperforms 2 dB phase-asynchronous symbol-asynchronous PNC, performs better than other two algorithms. Importantly, real wireless experimentation, implemented in prototype built USRP software radio platform. experiment decoder works well practice.
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L. R. Bahl, Optimal decoding of linear codes for minimizing symbol error rate IEEE Transactions on Information Theory. ,vol. 20, pp. 284- 287 ,(1974)
Shengli Zhang, Soung Chang Liew, Patrick P. Lam, Hot topic: physical-layer network coding acm/ieee international conference on mobile computing and networking. pp. 358- 365 ,(2006) , 10.1145/1161089.1161129
A. Viterbi, Error bounds for convolutional codes and an asymptotically optimum decoding algorithm IEEE Transactions on Information Theory. ,vol. 13, pp. 260- 269 ,(1967) , 10.1109/TIT.1967.1054010
M.L. Cedervall, R. Johannesson, A fast algorithm for computing distance spectrum of convolutional codes IEEE Transactions on Information Theory. ,vol. 35, pp. 1146- 1159 ,(1989) , 10.1109/18.45271
G. Solomon, H. C. A. Tilborg, A Connection Between Block and Convolutional Codes Siam Journal on Applied Mathematics. ,vol. 37, pp. 358- 369 ,(1979) , 10.1137/0137027
Ping-Chung Wang, Yu-Chih Huang, Krishna R. Narayanan, Asynchronous compute-and-forward/integer-Forcing with quasi-cyclic codes global communications conference. pp. 1504- 1509 ,(2014) , 10.1109/GLOCOM.2014.7037021
Qing Yang, Soung Chang Liew, Optimal decoding of convolutional-coded physical-layer network coding wireless communications and networking conference. pp. 364- 369 ,(2014) , 10.1109/WCNC.2014.6952035
H. Ma, J. Wolf, On Tail Biting Convolutional Codes IEEE Transactions on Communications. ,vol. 34, pp. 104- 111 ,(1986) , 10.1109/TCOM.1986.1096498
L. Bahl, J. Cocke, F. Jelinek, J. Raviv, Optimal decoding of linear codes for minimizing symbol error rate (Corresp.) IEEE Transactions on Information Theory. ,vol. 20, pp. 284- 287 ,(1974) , 10.1109/TIT.1974.1055186
Xiaofu Wu, Chunming Zhao, Xiaohu You, Joint LDPC and Physical-Layer Network Coding for Asynchronous Bi-Directional Relaying IEEE Journal on Selected Areas in Communications. ,vol. 31, pp. 1446- 1454 ,(2013) , 10.1109/JSAC.2013.130809