Patent ID: 9729240
Date: 2017-08-08
CPC Classifications: H03K,H04B,H04L

Claim:
1. A communication device for processing n-dimensional double square quadrature amplitude modulation (nDSQ) coded signals for pulse amplitude modulation with m levels (PAMm), the communication device coupled with the network, the communication device comprising: a photodetector for receiving optical signals; a communication interface for receiving analog signals; an analog to digital convert (ADC) for converting the analog signals to nDSQ symbols; a channel for receiving nDSQ symbols, the nDSQ symbols including a first nDSQ symbol; a first splicer configured to divide the nDSQ symbol into a first segment representing most significant bits (MSBs) and a second segment representing least significant bits (LSBs); a decoder configured to processes the second segment and to generate an error indication based at least on parity violation; a multiplexer configured to generate PAM (m/2) data using the first segment and the error indication; and a de-mapping module configured to map the PAM (m/2) data to MSBs bits; wherein n is associated with a number of dimensions and is 2 or greater, and m is 2 or greater.