×

Preamble design for multiple input—multiple output (MIMO), orthogonal frequency division multiplexing (OFDM) system

  • US 7,233,625 B2
  • Filed: 03/28/2001
  • Issued: 06/19/2007
  • Est. Priority Date: 09/01/2000
  • Status: Expired due to Term
First Claim
Patent Images

1. A method of configuring a preamble portion of a data signal for transmission over a plurality of sub-carriers by at least two antennas of a transmitter device, said method comprising:

  • assigning a respective pseudo-noise (PN) code to each of said at least two antennas;

    assigning each of said plurality of sub-carriers to a respective one of said at least two antennas;

    modulating each of said plurality of sub-carriers as a function of said respective pseudo-noise (PN) code that is assigned to a same one of said at least two antennas as said each of said plurality of sub-carriers such that a plurality of modulated sub-carriers are obtained that are each assigned to a respective one of said at least two antennas;

    delivering each of said plurality of modulated sub-carriers to its assigned transmitter; and

    transmitting, at substantially a same time, each said plurality of modulated sub-carriers using its assigned transmitter.

View all claims
  • 3 Assignments
Timeline View
Assignment View
    ×
    ×