PATENT CLAIM ANALYSIS

Application Number: 16206991
Application Type: Utility
Filing Date: 2018-11
Publication Date: 2019-04
Patent Classification: ["375", "262000"]

Abstract:
Communication systems are described that use geometrically shaped constellations that have increased capacity compared to conventional constellations operating within a similar SNR band. In several embodiments, the geometrically shaped is optimized based upon a capacity measure such as parallel decoding capacity or joint capacity. In many embodiments, a capacity optimized geometrically shaped constellation can be used to replace a conventional constellation as part of a firmware upgrade to transmitters and receivers within a communication system. In a number of embodiments, the geometrically shaped constellation is optimized for an Additive White Gaussian Noise channel or a fading channel. In numerous embodiments, the communication uses adaptive rate encoding and the location of points within the geometrically shaped constellation changes as the code rate changes. One embodiment of the invention includes a transmitter configured to transmit signals to a receiver via a communication channel, wherein the transmitter, includes a coder configured to receive user bits and output encoded bits at an expanded output encoded bit rate, a mapper configured to map encoded bits to symbols in a symbol constellation, a modulator configured to generate a signal for transmission via the communication channel using symbols generated by the mapper. In addition, the receiver includes a demodulator configured to demodulate the received signal via the communication channel, a demapper configured to estimate likelihoods from the demodulated signal, a decoder that is configured to estimate decoded bits from the likelihoods generated by the demapper. Furthermore, the symbol constellation is a capacity optimized geometrically spaced symbol constellation that provides a given capacity at a reduced signal-to-noise ratio compared to a signal constellation that maximizes d min .

Claim (Index 1):
A digital communication system, comprising:\n a transmitter configured to transmit signals to a receiver via a communication channel; wherein the transmitter, comprises:\n a coder configured to receive user bits and output encoded bits at an expanded output encoded bit rate; \n a mapper configured to map encoded bits to symbols in a symbol constellation; \n a modulator configured to generate a signal for transmission via the communication channel using symbols generated by the mapper; \n wherein the receiver, comprises:\n a demodulator configured to demodulate the received signal via the communication channel; \n a demapper configured to estimate likelihoods from the demodulated signal; \n a decoder that is configured to estimate decoded bits from the likelihoods generated by the demapper; and \n wherein the symbol constellation is a capacity optimized geometrically spaced symbol constellation that provides a given capacity at a reduced signal-to-noise ratio compared to a signal constellation that maximizes d min .

Metadata:
- Claim Count in Document: 1.0
- Percentile: 98.0
- Lexical Diversity: 2.33065
- Patent Class: 375.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['14491731', '15682475', '15200800', '14943003', '15826579']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.5664200842966549
- 35 USC 102 Novelty (BERT): 0.6409051468690599
- Combined Prediction Score: 0.5738685905538954
- Mean Citation Score: 571.1553759999998
- Max Citation Score: 609.19135
- Similarity Product: 575.303543037793

Labels:
- Claim Label 101: 0
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 1
- Combined Label: 0
- Label 101 Adjusted: 0

Dataset: test