In this paper, we propose a new linear physical- layer network coding (NC) scheme for the fading Y- channel, assuming that the channel state information (CSI) is not available at transmitters. In this scheme, each user transmits one message to a relay and intends to obtain both other two users' messages. Based on the receiver- side CSI, the relay determines two NC generator vectors for linear network coding, and reconstructs the associated two linear NC codewords. For the case when there is one time- slot in the uplink phase, we present an explicit solution for the generator vectors that minimizes the error probability at a high SNR, and a lower bound of the error performance of the proposed scheme using our optimized generator vectors. Extending to multiple time-slots in the uplink, two typical scenarios are discussed. Numerical results show that the proposed scheme significantly outperforms existing schemes, and match well with our analytical results.


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    Title :

    Linear Physical-Layer Network Coding for the Fading Y-Channel without Transmitter Channel State Information


    Contributors:
    Guo, Jiajia (author) / Yang, Tao (author) / Yuan, Jinhong (author) / Zhang, Jian A. (author)


    Publication date :

    2016-09-01


    Size :

    270661 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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