Transmission and reception of quad-subcarrier orthogonal frequency division multiplexed signals
US9264144B2 · kind B2 · utility
4Cited by
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20Claims
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Key dates
| Filing date | Oct 22, 2014 |
| Grant date | Feb 16, 2016 |
| Priority date | — |
| Expiry date | Oct 22, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/2601
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A dual-polarization, 4-subcarriers orthogonal frequency division multiplexed signal carrying information bits is transmitted in an optical communication network without transmitting a corresponding pilot tone or training sequence. A receiver receives the transmitted signal and recovers information bits using a blind equalization technique and by equalizing the 4-subcarriers OFDM signal as a 25-QAM signal in time domain with a CMMA (constant multi modulus algorithm) equalization method.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.