Title :
Joint serially concatenated continuous phase modulation and physical-layer network coding
Author :
Nan Sha ; Yuanyuan Gao ; Xiaoxin Yi ; Wenlong Li ; Yanshan Long
Author_Institution :
Coll. of Commun. Eng., PLA Univ. of Sci. & Technol., Nanjing, China
Abstract :
This paper presents a joint physical-layer network coding (PNC) and serially concatenated continuous phase modulation (SCCPM) scheme in a two-way relay (TWR) channel. This proposed scheme can be viewed as a serial concatenated codes (SCCs) scheme in which the joint CPM and PNC is the inner code and the convolutional code (CC) is the outer code. It aims to improve the spectral efficiency, error performance and power efficiency of the PNC system by utilizing the technical advantage of CPM and SCCs. An iterative decoding algorithm for the relay receiver over AWGN channels is investigated. Emphasis is put on the extrinsic logarithmic likelihood ratios (LLRs) of the XORed codewords generated by the soft input soft output (SISO) inner decoder. Simulation results are also provided to show the error performance of the joint scheme.
Keywords :
AWGN channels; concatenated codes; continuous phase modulation; convolutional codes; iterative decoding; network coding; radio receivers; AWGN channels; PNC; SCCPM; convolutional code; error performance; extrinsic logarithmic likelihood ratio; iterative decoding; physical layer network coding; power efficiency; relay receiver; serial concatenated codes; serially concatenated continuous phase modulation; soft input soft output inner decoder; spectral efficiency; two-way relay channel; Continuous phase modulation; Decoding; Iterative decoding; Joints; Network coding; Relays; Physical-layer network coding; continuous phase modulation; iterative decoding; soft input soft output;
Conference_Titel :
Information Science and Technology (ICIST), 2014 4th IEEE International Conference on
Conference_Location :
Shenzhen
DOI :
10.1109/ICIST.2014.6920527
