公开(公告)号：GB2472906A

公开(公告)日：2011-02-23

申请号：GB201013549

申请日：2010-08-12

Applicant: KOREA ELECTRONICS TELECOMM

Inventor： CHANG KYUNG HI ,  MOHAISEN MANAR ,  AN HONG SUN ,  BAEK YOUNG SEOK ,  KOO BON TAE

IPC: H04L25/03 ,  H04L25/02

Abstract: In a multiple-input multiple-output (MIMO) receiver employing channel estimation 10 and the `adaptive QR-decomposition with M' (AQRDM) algorithm 20, complexity is reduced when the number of transmitting antennas is large by grouping constellation sets 40 and dividing the tree search into partial detection phases (PDPs) 50, thus cutting the number of remaining branches at each detection point. Each of the G subsets Ai of constellation set E2 have the same cardinality (number of set elements) and can be grouped continuously (see fig. for 16QAM with G1=4) or dispersively (fig. 2B for 16QAM with G2=4). For each symbol, the minimum accumulated distance per PDP is calculated, and nodes for which this exceeds threshold (fig 3B) are removed in order to simplify the decision process.

公开(公告)号：GB2472906B

公开(公告)日：2012-03-14

申请号：GB201013549

申请日：2010-08-12

Applicant: KOREA ELECTRONICS TELECOMM

Inventor： CHANG KYUNG HI ,  MOHAISEN MANAR ,  AN HONG SUN ,  BAEK YOUNG SEOK ,  KOO BON TAE

IPC: H04L25/03 ,  H04L25/02

Abstract: There is provided a signal detecting method using constellation set grouping in a spatial multiplexing multiple input multiple output system. The signal detecting method includes dividing a set of candidate symbols, a constellation set into a plurality of subsets by grouping the constellation set; dividing a tree search process of a QR-decomposition with M-algorithm (QRDM) algorithm into a plurality of partial detection phases; and performing the plurality of divided partial detection phases in parallel or iteratively.