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In this paper, we study the issue of scheduling transmission opportunities among nodes (peers) to achieve higher network throughput and lower transmission delay for network coding enabled wireless networks. By conducting an in-depth investigation on the scheduling principles, we propose a cooperative Peer-to-peer Information Exchange (PIE) scheme with an efficient and light-weight scheduling algorithm. PIE can not only fully exploit the broadcast nature of wireless channels, but also take advantage of cooperative peer-to-peer information exchange. Qualitative analysis and extensive simulations demonstrate the effectiveness and efficiency of PIE.