Distributed antenna system for massive MIMO signals with one fiber optic cable
US10735095B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 13, 2019 |
| Grant date | Aug 4, 2020 |
| Priority date | — |
| Expiry date | Jun 13, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L5/001
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An integrated antenna distributed system incorporates various types of communication signals, such as mobile communication signals, public safety signals, WiFi signals, and other types of communication signals. Such a system uses a single reference signal to support MIMO and Massive MIMO functions using a single optical cable or a single fiber optic cable, and a signal from a remote location. The reference signal is used for frequency stability of remote units (RUs) connected to the head end (HE). For example, a reference signal is selected and sent from the HE to RUs, a bandwidth and frequency conversion of signals to be transmitted is specified and/or performed, a RU receives the converted signals and the reference signal from the HE, where the converted signals may be frequency or band-constrained, and the converted signals are converted at the RUs back to their original frequencies or bands.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.