Luay Azzam Ender Ayanoglu An Efficient Tree Search for Reduced Complexity Sphere Decoding. 4070-4073 2008 GLOBECOM http://dx.doi.org/10.1109/GLOCOM.2008.ECP.781 conf/globecom/2008 db/conf/globecom/globecom2008.html#AzzamA08