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 3):
The  claim 1  transmitter apparatus, wherein said generator of COFDM DCM radio-frequency signal comprises:\n a source of radio-frequency oscillations; \n a first pilot-carrier symbols insertion unit connected for introducing pilot carrier symbols at regular intervals among the QAM symbols in said first halves of each one of said successive COFDM symbols; \n a first orthogonal frequency-division multiplex modulator responsive to said first halves of successive COFDM symbols in the frequency domain to generate respective inverse discrete Fourier transform responses responsive to those halves of successive COFDM symbols in the time domain; \n a first guard interval insertion unit arranged to generate a response therefrom which introduces guard intervals between successive inverse discrete Fourier transform responses to said first halves of successive COFDM symbols in the time domain; \n a first single-sideband amplitude modulator for modulating the amplitude of its response to said radio-frequency oscillations in accordance with the amplitude of said response from said first guard interval insertion unit, thereby to generate the lower-frequency sideband of said ISB-COFDM radio-frequency signal; \n a second pilot-carrier symbols insertion unit for introducing pilot carrier symbols at regular intervals among the QAM symbols in said second halves of each one of said successive COFDM symbols; \n a second orthogonal frequency-division multiplex modulator responsive to said second halves of successive COFDM symbols in the frequency domain to generate respective inverse discrete Fourier transform responses responsive to those halves of successive COFDM symbols in the time domain; \n a second guard interval insertion unit arranged to generate a response therefrom which introduces guard intervals between successive inverse discrete Fourier transform responses to said second halves of successive COFDM symbols in the time domain; \n a second single-sideband amplitude modulator for modulating the amplitude of its response to said radio-frequency oscillations in accordance with the amplitude of said response from said second guard interval insertion unit, thereby to generate the upper-frequency sideband of said COFDM DCM radio-frequency signal; and \n a signal combiner connected for combining the lower-frequency and upper-frequency sidebands of said COFDM DCM radio-frequency 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): 0.5738408232254264
- 35 USC 102 Novelty (BERT): 0.6879003683747393
- Combined Prediction Score: 0.5852467777403577
- Mean Citation Score: 546.934846
- Max Citation Score: 795.67267
- Similarity Product: 663.1061187059032

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