公开(公告)号：EP2296295A3

公开(公告)日：2013-12-04

申请号：EP10184412.4

申请日：2001-08-21

申请人： Apple Inc.

发明人： Wu, Shiquan ,  TONG, Wen ,  Strawczynski, Leo

IPC分类号： H04B7/06 ,  H04L1/06 ,  H04L27/26

CPC分类号： H04B7/068 ,  H04B7/0417 ,  H04B7/063 ,  H04B7/0669 ,  H04B7/0689 ,  H04B7/0697 ,  H04B7/0891 ,  H04L1/0001 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0025 ,  H04L1/0026 ,  H04L1/0625 ,  H04L1/0631 ,  H04L1/0662 ,  H04L1/0675 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/0025 ,  H04L5/0026 ,  H04L5/0046 ,  H04L5/006 ,  H04L27/0008 ,  H04L27/2604 ,  H04L27/2628 ,  H04L27/2646 ,  H04L27/2647

摘要： A terminal apparatus for use with an orthogonal frequency division-multiplexing (OFDM) system that uses a multiple input multiple output (MIMO) structure, the teminal apparatus comprising:
a controller that responds to receipt of an OFDM signal by making a determination as to whether subsequent MIMO OFDM signals should be transmitted independently of each other or corresponding to each other and causing a feedback signal to be transmitted indicative of that determination. The determination for the subsequent transmissions includes a determination as to whether transmit diversity or spatial multiplexing should be used and the feedback signal is indicative of that determination.

公开(公告)号：EP2299606B1

公开(公告)日：2017-09-27

申请号：EP10184429.8

申请日：2001-08-21

申请人： Apple Inc.

发明人： Wu, Shiquan ,  TONG, Wen ,  Strawczynski, Leo

IPC分类号： H04B7/06 ,  H04L1/06 ,  H04L27/26 ,  H04B7/08 ,  H04L1/00 ,  H04L27/00 ,  H04L5/00

CPC分类号： H04B7/068 ,  H04B7/0417 ,  H04B7/063 ,  H04B7/0669 ,  H04B7/0689 ,  H04B7/0697 ,  H04B7/0891 ,  H04L1/0001 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0025 ,  H04L1/0026 ,  H04L1/0625 ,  H04L1/0631 ,  H04L1/0662 ,  H04L1/0675 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/0025 ,  H04L5/0026 ,  H04L5/0046 ,  H04L5/006 ,  H04L27/0008 ,  H04L27/2604 ,  H04L27/2628 ,  H04L27/2646 ,  H04L27/2647

公开(公告)号：EP2296295B1

公开(公告)日：2018-05-23

申请号：EP10184412.4

申请日：2001-08-21

申请人： Apple Inc.

发明人： Wu, Shiquan ,  TONG, Wen ,  Strawczynski, Leo

IPC分类号： H04B7/06 ,  H04L1/06 ,  H04L27/26

CPC分类号： H04B7/068 ,  H04B7/0417 ,  H04B7/063 ,  H04B7/0669 ,  H04B7/0689 ,  H04B7/0697 ,  H04B7/0891 ,  H04L1/0001 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0025 ,  H04L1/0026 ,  H04L1/0625 ,  H04L1/0631 ,  H04L1/0662 ,  H04L1/0675 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/0025 ,  H04L5/0026 ,  H04L5/0046 ,  H04L5/006 ,  H04L27/0008 ,  H04L27/2604 ,  H04L27/2628 ,  H04L27/2646 ,  H04L27/2647

摘要： An adaptable orthogonal frequency-division multiplexing system (OFDM) that uses a multiple input multiple output (MIMO) to having OFDM signals transmitted either in accordance with time diversity to reducing signal fading or in accordance with spatial diversity to increase the data rate. Sub-carriers are classified for spatial diversity transmission or for time diversity transmission based on the result of a comparison between threshold values and at least one of three criteria. The criteria includes a calculation of a smallest eigen value of a frequency channel response matrix and a smallest element of a diagonal of the matrix and a ratio of the largest and smallest eigen values of the matrix.