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Distributed base station, communication system, and signal transmission method thereof

  • US 20070093273A1
  • Filed: 10/12/2006
  • Published: 04/26/2007
  • Est. Priority Date: 10/18/2005
  • Status: Active Grant
First Claim
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1. A distributed base station (20) serving mobile stations, which comprises multiple antenna-RF processing units (21, 22, 23) and a central processing unit (24) remotely connected with said multiple antenna-RF processing units, each of the antenna-RF processing units having an antenna array formed by multiple antennas, said central processing unit comprising:

  • an MIMO coding unit (241) for MIMO coding of data of each of the mobile stations so that data of each of the mobile stations generates multi-path data symbols;

    a beam-forming unit (242) for multiplying each path data symbol of the multi-path data symbols of each of the mobile stations by a weighted coefficient vector corresponding to this path data symbol, to obtain beam-forming data of each path data symbol of each of the mobile stations; and

    an overlapping unit (243) for, with respect to each antenna in said antenna-RF processing units, overlapping beam-forming data of the respective mobile stations for this antenna and feeding the overlapped beam-forming data to this antenna for transmission.

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