Kanglian Zhao Hua Jiang Yang Li Sidan Du Random selection LLL algorithm and its fixed complexity variant for MIMO detection. 1-5 2011 WPMC http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=6081553 conf/wpmc/2011 db/conf/wpmc/wpmc2011.html#ZhaoJLD11