Receiving apparatus and method, sending apparatus and method, front-end circuit, modulator, and transceiving system
US9281980B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 2, 2014 |
| Grant date | Mar 8, 2016 |
| Priority date | — |
| Expiry date | Dec 2, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/2627
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A receiving apparatus and method, a sending apparatus and method, a front-end circuit, a modulator, and a transceiving system are provided. The sending apparatus includes: a double-sideband OFDM modulator, configured to perform double-sideband OFDM modulation on a bit sequence of service data to obtain a double-sideband OFDM analog electrical signal, where the double-sideband OFDM analog electrical signal carries the service data on both positive and negative sidebands, and an IQMZ, configured to perform optical carrier modulation on the double-sideband OFDM analog electrical signal to obtain a double-sideband OFDM optical signal, where the double-sideband OFDM optical signal carries the service data on both positive and negative sidebands. In comparison with a traditional manner in which service data is only carried on a positive sideband, bandwidth utilization in the present invention doubles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.