Abstract: A method transmits an input stream of data symbols in a multiple-input, multiple-output wireless communications system. The input stream is demultiplexed into M substreams. Each of the M substreams is adaptively modulated and coded to a coded substream according to channel conditions. A first of the M coded substreams is space-time transmit diversity encoding into two space-time transmit diversity encoded substreams. There is one space-time transmit diversity encoded substream for each one of two transmit antennas. Each other coded substream is transmitted directly by a corresponding one of remaining M?1 transmit antenna.
Type:
Grant
Filed:
April 21, 2004
Date of Patent:
March 28, 2006
Assignee:
Mitsubishi Electric Research Laboratories, Inc.
Inventors:
Neelesh B. Mehta, Pallav Sudarshan, Andreas F. Molisch, Jinyun Zhang
Abstract: A digital receiver detects symbols in a baseband signal in a DS-CDMA network. The receiver includes multiple spaced apart antennas. A time-frequency rake receiver is connected to each of the antennas. An interference canceller is connected to each output of each of the rake receiver. Each interference canceller produces a contributing symbol in parallel. A diversity combiner determines a decision symbol corresponding to the baseband signal from the contributing symbols.
Type:
Grant
Filed:
August 22, 2000
Date of Patent:
January 4, 2005
Assignee:
Mitsubishi Electric Research Laboratories, Inc.