PATENT CLAIM ANALYSIS

Application Number: 16039259
Application Type: Utility
Filing Date: 2018-07
Publication Date: 2019-05
Patent Classification: ["375", "259000"]

Abstract:
Transmitting apparatus and receiving apparatus for communication systems using coded orthogonal frequency-division multiplexed (COFDM) dual-subcarrier modulation (DCM) signals. The same coded data is mapped both to COFDM subcarriers located in the lower-frequency half spectrum of the DCM signal and to COFDM subcarriers located in its upper-frequency half spectrum. The mapping of COFDM subcarriers in those half spectra employ labeling diversity preferred for reception of DCM with less error when accompanied by interfering additive white Gaussian noise (AWGN). In preferred forms of COFDM DCM signal, the quadrature amplitude modulation (QAM) of COFDM subcarriers is Gray mapped to position palindromic lattice-point labels along one of the diagonals of each square QAM constellation.

Claim (Index 2):
The  claim 1  transmitter apparatus, wherein said generator of COFDM DCM radio-frequency signal comprises:\n a pilot-carrier symbols insertion unit connected for introducing pilot carrier symbols at regular intervals among the QAM symbols in each one of said successive COFDM symbols; \n an orthogonal frequency-division multiplex modulator responsive to said successive COFDM symbols in the frequency domain to generate respective inverse discrete Fourier transform responses thereto in the time domain; \n a guard interval insertion unit arranged to introduce guard intervals between successive inverse discrete Fourier transform responses; \n a digital-to-analog converter connected for converting said successive inverse discrete Fourier transform responses with said guard intervals therebetween to an analog modulating signal; \n a source of radio-frequency oscillations; and \n a single-sideband amplitude modulator for modulating the amplitude of its response to said radio-frequency oscillations in accordance with the amplitude of said analog modulating signal to generate said COFDM DCM radio-frequency signal for amplification by said power amplifier before being transmitted.

Metadata:
- Claim Count in Document: 53.0
- Percentile: 95.0
- Lexical Diversity: 1.64
- Patent Class: 375.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: False
- Related Applications: ['16037747', '14641428', '14867930', '15213569', '13660861']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.5838871146248537
- 35 USC 102 Novelty (BERT): 0.6624058217452725
- Combined Prediction Score: 0.5917389853368955
- Mean Citation Score: 546.934846
- Max Citation Score: 795.67267
- Similarity Product: 592.8439618192625

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

Dataset: test