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Pre-coding in multi-user MIMO

DC
  • US 10,200,227 B2
  • Filed: 12/31/2016
  • Issued: 02/05/2019
  • Est. Priority Date: 05/14/2002
  • Status: Expired due to Fees
First Claim
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1. A non-transitory computer-readable medium including computer-readable program code stored thereon, the computer-readable program code configured to be executed by at least one processor to implement a method for generating an Orthogonal Frequency Division Multiplexing (OFDM) transmission signal, the method comprising:

  • employing an invertible transform to spread a plurality of data symbols with complex-valued coefficients to generate a plurality of spread data symbols;

    mapping the spread data symbols to a plurality of OFDM subcarriers; and

    responsive to the mapping, modulating the spread data symbols onto the plurality of OFDM subcarriers to produce the OFDM transmission signal comprising a superposition of the OFDM subcarriers, wherein employing the invertible transform is configured to provide the superposition with a reduced peak-to-average power ratio.

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