公开(公告)号：US08428159B2

公开(公告)日：2013-04-23

申请号：US12367971

申请日：2009-02-09

申请人： Geert A. Atwater ,  Brian Wong

发明人： Geert A. Atwater ,  Brian Wong

IPC分类号： H04K1/10 ,  H04L27/28

CPC分类号： H04L25/0246 ,  H04B7/0413 ,  H04B7/0851 ,  H04B7/0854 ,  H04L1/06 ,  H04L2025/03426

摘要： A MIMO receiver is provided with a preprocessor for performing QR decomposition of a channel matrix H wherein the factored reduced matrix R is used in place of H and Q*y is used in place of the received vector y in a maximum likelihood detector (“MLD”). The maximum likelihood detector might be a hard-decision MLD or a soft-decision MLD. A savings of computational complexity can be used to provide comparable results more quickly, using less circuitry, and/or requiring less consumed energy, or performance can be improved for a fixed amount of time, circuitry and/or energy. Where the MLD uses approximations, such as finite resolution calculations (fixed point or the like) or L1 Norm approximations, the reduced number of operations resulting from using the reduced matrix results in improved approximations as a result of the finite resolution operations. Other methods of reducing the channel matrix might be used for suitable and/or cumulative advantages.