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Communications system employing non-polluting pilot codes

  • US 7,224,942 B2
  • Filed: 07/26/2001
  • Issued: 05/29/2007
  • Est. Priority Date: 07/26/2001
  • Status: Expired due to Fees
First Claim
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1. A method of facilitating estimation of propagation channels between a first number of transmitters and a lesser number of receivers, the method comprising:

  • transmitting information signals for said receivers jointly from said transmitters based on propagation channel estimates, such that interference between information signals is reduced at each said receiver; and

    transmitting a number of dummy pilot signals equal to a difference between the number of transmitters and receivers, such that said dummy pilot signals cause substantially no interference in reception of said information signals by said receivers when said propagation channel estimates substantially match said propagation channels.

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