Cooperative communication in wireless networks
http://ieeexplore.ieee.org/search/freesrchabstract.jsp?tp=&arnumber=1341264&queryText%3DCooperative+communication+in+wireless+networks%26openedRefinements%3D*%26searchField%3DSearch+All

Cooperative communications in mobile ad hoc networks
http://ieeexplore.ieee.org/search/freesrchabstract.jsp?arnumber=1708409&isnumber=36051&punumber=79&k2dockey=1708409@ieeejrns&query=((cooperative+communications+in+mobile+ad-hoc+networks)<in>metadata)&pos=0

Relay-based deployment concepts for wireless and mobile broadband radio
http://ieeexplore.ieee.org/search/freesrchabstract.jsp?arnumber=1336724&isnumber=29478&punumber=35&k2dockey=1336724@ieeejrns&query=((relay-based+deployment+concepts+for+wireless+and+mobile+broadband+radio)<in>metadata)&pos=0

谢谢！