×

Distributed antenna system for MIMO signals

  • US 9,602,176 B2
  • Filed: 01/04/2016
  • Issued: 03/21/2017
  • Est. Priority Date: 10/01/2010
  • Status: Active Grant
First Claim
Patent Images

1. A distributed antenna system, comprising:

  • a master unit configured to receive at least one set of multiple input multiple output (MIMO) channel signals at an original MIMO frequency from at least one signal source, the MIMO channel signals including at least a first MIMO channel signal and a second MIMO channel signal;

    the master unit further configured to receive at least one non-MIMO signal that has a frequency in a first legacy service frequency band and having a band processing circuit component configured for processing the signal in the first legacy service frequency band;

    the master unit being configured to frequency convert at least one of the first and second MIMO channel signals from the original MIMO frequency to a different frequency close to the first legacy service frequency band, the master unit further configured to process the at least one converted MIMO channel signal and the non-MIMO signal using the same band processing circuit component, and to combine non-MIMO signals in the first legacy service band and the first MIMO channel signal and the second MIMO channel signal for transmission;

    an optical link operably coupled with the master unit;

    a unit located remotely from the master unit and in communication with the master unit via the optical link for transceiving the MIMO channel signals and non-MIMO signals, the unit including band processing circuitry configured for processing together the non-MIMO signal in the first legacy service frequency band and the at least one converted MIMO channel signal and separating the converted MIMO channel signal from the non-MIMO signal;

    conversion circuitry configured to receive the at least one converted MIMO channel signal and to frequency convert the at least one converted MIMO channel signal from the frequency close to the first legacy service frequency band back to the original MIMO frequency for transmission over one or more antennas.

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