Patent ID: 9391715
Filing Date: 2016-07-12
CPC Classification: H04B,H04L

Claim Text:
1. A receiver comprising: an analog front end performing analog-to-digital conversion on a plurality of serial data streams received over an optical fiber to generate a digital signal vector, the digital signal vector comprising at least an in-phase X-polarized component, a quadrature-phase X-polarized component, an in-phase Y-polarized component, and a quadrature-phase Y-polarized component; a bulk chromatic dispersion equalizer applying a frequency domain equalization and producing a first equalized signal vector; a fast equalizer further equalizing the first equalized signal vector by applying a second filter, the fast equalizer producing a second filtered signal vector; a carrier recovery module demodulating the second filtered signal vector to generate a baseband signal vector; and a frame alignment module detecting frames of the baseband signal vector for synchronization with a framer interface, the frame alignment module to select one or more framing operations from a predefined set of framing operations and to apply the selected one or more framing operations to the baseband signal vector, the predefined set of framing operations including: swapping polarizations of X-polarized and Y-polarized components of the baseband signal vector, rotating a constellation of X-polarized or Y-polarized components of the baseband signal vector, or shifting Y-polarized components of the baseband signal vector by an integer multiple of a period of the baseband signal vector.