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TRANSMIT POWER ALLOCATION FOR ADAPTIVE MULTI-CARRIER MULTIPLEXING MIMO SYSTEMS

  • US 20120320868A1
  • Filed: 08/31/2012
  • Published: 12/20/2012
  • Est. Priority Date: 12/20/2007
  • Status: Active Grant
First Claim
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1. A multiple-input-multiple-output, MIMO, communication device comprising a power allocator receiving two or more transmission channels, each of said transmission channels having preassigned a portion of transmit power for each of a group of subcarriers,said power allocator further adapted to assign, for each subcarrier of said group of subcarriers, at least part of the preassigned transmit power portion of a transmission channel that is, according to tonemap information for the transmission channel, not used for transmitting information at the subcarrier, to the other one or more transmission channels that are used for transmitting information at the subcarrier, and a MIMO precoder arranged after the power allocator, the MIMO precoder adapted to precode the transmission'"'"' channels.

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