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Joint Power Allocation and Precoding for Network Coding-Based Cooperative Multicast Systems

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2 Author(s)
Jun Li ; Dept. of Electron. Eng., Shanghai Jiaotong Univ., Shanghai ; Wen Chen

In this letter, we propose two power allocation schemes based on the statistical channel state information (CSI) and instantaneous srarrr CSI at transmitters, respectively, for a 2-N-2 cooperative multicast system with nonregenerative network coding. Then the isolated precoder and the distributed precoder are, respectively, applied to the schemes to further improve the system performance by achieving the full diversity gain. Finally, we demonstrate that joint instantaneous srarrr CSI-based power allocation and distributed precoder design achieve the best performance.

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Signal Processing Letters, IEEE  (Volume:15 )