Cooperation Diversity:A New Spatial Diversity
Technique
Yin Qinye,Zhang Ying,Ding Le,Meng Yinkuo
(School of Electronics and Information Engineering,Xi'an Jiaotong University,Xi'an 710049,
China)
Abstract:An overview of cooperation diversity was presented.The spatial diversity
generally requires more than one separated antenna at the mobile
terminal.Unfortunately,this is impractical in wireless cellular system due to the size or
hardware complexity of the mobile terminal.To solve this limitation,a new form of spatial
diversity called cooperation diversity was proposed.Compared to the spatial multiple-input
multiple-output (MIMO) system,the cooperation diversity enables single-antenna mobiles in
a multi-user environment to share their antennas so that each mobile is served by a
virtual multiple-antenna transmitter/receiver.The conception, system structure,cooperation
protocols,classification and research status of cooperation diversity were presented, and
also,the advantages and problems introduced by cooperation and the open issues were
discussed.
Keywords:cooperation diversity;cellular system;multiple-input multiple-output;achievable
rate region