Nosratinia A, Hunter T E, and Hedayat A. Cooperativecommunication in wireless networks. IEEE CommunicationsMagazine, 2004, 42(10): 74-80.  Laneman J N, Tse D N C, and Wornell G W. Cooperativediversity in wireless networks: efficient protocols and outagebehavior[J].IEEE Transactions on Information Theory.2004,50(12):3062-3080  Zhang W, Li Y, and Xia X G, et al.. Distributed spacefrequencycoding for cooperative diversity in broadbandwireless ad hoc networks. IEEE Transactions on WirelessCommunications, 2008, 7(3): 995-1003.  Laneman J N and Wornell G W. Distributed space-timecoded protocols for exploiting cooperative diversity inwireless networks. Proceedings of The 2002 IEEE GlobalTelecommunications Conference, Taibei, Taiwan, 2002:77-81.  Jing Y and Hassibi B. Distributed space-time coding inwireless relay networks. IEEE Transactions on WirelessCommunications, 2006, 5(12): 3524-3536.  Tian F, Ching P C, and Xia X G. A simple ICI mitigationmethod for a space-frequency coded cooperativecommunication system with multiple CFOS. Proceedings ofthe 2008 IEEE International Conference on Acoustics, Speechand Signal Processing, Las Vegas, USA, 2008: 3253-3256.  Seddik K and Liu K J. Distributed space-frequency codingover broadband relay channels[J].IEEE Transactions onWireless Communications.2008, 7(11):4748-4759  Wang H, Xia X G, and Yin Q. Distributed space-frequencycodes for cooperative communication systems with multiplecarrier frequency offsets. IEEE Transactions on WirelessCommunications, 2009, 8(2): 1045-1055.