公开(公告)号：CA2300449A1

公开(公告)日：2000-09-12

申请号：CA2300449

申请日：2000-03-10

Applicant: MOTOROLA INC

Inventor： FARMINE YANN ,  BOIXADERA ESPAX FRANCESEC ,  WHINNETT NICHOLAS

IPC: H01Q3/26 ,  H04B7/06 ,  H04B7/26 ,  H04J11/00 ,  H04L1/06 ,  H04L27/26

Abstract: Antenna weights for a transmit path (3) between two communication devices (1, 2), the first device (1) having an antenna array (4, 5, 6) are generated in the second device (2) and fed back to weighting circuitry (9, 10, 11, 12) in the first device (1). The invention is particularly applicable to multicarrier systems such as OFDM systems. Only weights for those sub-carriers identified as being received with comparatively poor signal quality are calculated and fed back to the first device (1), thus limiting the additional overhead requirements to a minimum.