1 XBC: XOR-based Buffer Coding for Reliable Transmissions over Wireless Networks Zizhan Zheng, Student Member, IEEE and Prasun Sinha, Member, IEEE Z. Zheng is with the Department of Computer Science and Engineering, Ohio State University, Room 395, Dreese Labs, 2015 Neil Avenue, Columbus, OH 43210. E-mail: zhengz@cse.ohio-state.edu. P. Sinha is with the Department of Computer Science and Engineering, Ohio State University, Room 395, Dreese Labs, 2015 Neil Avenue, Columbus, OH 43210. E-mail: prasun@cse.ohio-state.edu. An earlier version of this paper will be appearing at IEEE BROADNETS ’07 [1]. August 10, 2007 DRAFT