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Hardware-based time alignment of wireless links

  • US 9,490,880 B1
  • Filed: 01/07/2016
  • Issued: 11/08/2016
  • Est. Priority Date: 01/07/2016
  • Status: Active Grant
First Claim
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1. An article of manufacture comprising a baseband digital front-end (BDFE) processor for a multiple-in, multiple-out (MIMO) system having one or more radio-frequency integrated circuit (RFIC) chips connected to the BDFE processor by way of multiple JESD204B lanes, the BDFE processor comprising:

  • one or more sync-alignment circuits comprising one or more sets of integrated circuits that generate multiple, time-aligned JESD204B SYNC˜

    signals for a group of the JESD204B lanes based on a sync-to-lane mapping and a lane-to-group mapping; and

    multiple idle generation circuits comprising multiple sets of the integrated circuits that generate multiple, time-aligned JESD204B IDLE signals for the group of the JESD204B lanes based on a group-to-idle mapping.

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