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Method and apparatus for asynchronous OFDMA/SC-FDMA

  • US 9,923,701 B2
  • Filed: 12/04/2015
  • Issued: 03/20/2018
  • Est. Priority Date: 03/31/2014
  • Status: Active Grant
First Claim
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1. A method of transmitting data, the method comprising:

  • receiving, by a receiver, a first Orthogonal Frequency Division Multiplexing (OFDM) modulated signal from a first wireless electronic device over a first plurality of subcarriers; and

    receiving, by the receiver, a second OFDM modulated signal from a second wireless electronic device over a second plurality of subcarriers, wherein main lobes of the first OFDM modulated signal and the second OFDM modulated signal have bandwidths in the frequency domain that are equal to respective bandwidths associated with the first plurality of subcarriers and the second plurality of subcarriers, and wherein side lobes of the first OFDM modulated signal and the second OFDM modulated signal have amplitudes below a threshold outside the respective bandwidths of the first plurality of subcarriers and the second plurality of subcarriers.

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