×

Supporting distinct single-input single-output (SISO) services in a multiple-input multiple-output (MIMO) baseband circuit, particularly suited for a distributed antenna system (DAS)

  • US 10,044,419 B2
  • Filed: 02/03/2017
  • Issued: 08/07/2018
  • Est. Priority Date: 06/09/2015
  • Status: Active Grant
First Claim
Patent Images

1. A multiple-input multiple-output (MIMO) baseband circuit configured to support distinct single-input single-output (SISO) services, comprising:

  • a first MIMO path configured to distribute a first SISO signal;

    a second MIMO path configured to distribute a second SISO signal;

    a first quadrature modulator comprising a first SISO signal input coupled to the first MIMO path, the first SISO signal input configured to receive the first SISO signal; and

    a second quadrature modulator comprising a second SISO signal input coupled to the second MIMO path, the second SISO signal input configured to receive the second SISO signal;

    wherein;

    the first quadrature modulator is configured to modulate the first SISO signal to a first radio frequency (RF) band based on a modulation frequency;

    the second quadrature modulator is configured to modulate the second SISO signal to a second RF band based on the modulation frequency, wherein the second RF band is different from the first RF band;

    the first SISO signal comprises a first in-phase (I) signal and a first quadrature (Q) signal; and

    the second SISO signal comprises a second I signal and a second Q signal.

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