PATENT CLAIM ANALYSIS

Application Number: 16148922
Application Type: Utility
Filing Date: 2018-10
Publication Date: 2019-01
Patent Classification: ["375", "232000"]

Abstract:
An iterative two dimension equalizer usable in a receiver of orthogonal time frequency space (OTFS) modulated signals is described. In one configuration of the equalizer, a forward path generates, from received time-frequency domain samples and a channel estimate, estimates of data bits and likelihood numbers associated with the estimates of data bits, generated by delay-Doppler domain processing. In the feedback direction, the estimates of data bits are used to generate symbol estimates and autocorrelation matrix estimate in the time domain. In another configuration, a soft symbol mapper is used in the feedback direction for directly generating the feedback input symbol estimate without having to generate estimates of data bits.

Claim (Index 13):
A wireless transceiver apparatus comprising a processor, transmission and reception circuitry and a memory, the apparatus configured to perform a method for recovering information bits from a received signal, the method comprising:\n receiving, at an iterative equalizer, iteration inputs including a two dimensional estimate of a wireless channel over which the received signal is received, a stream of received symbols, a symbol estimate from a previous iteration, and an input autocorrelation matrix estimate from the previous iteration, and computing, from the iteration inputs, a Wiener estimate of the stream of received symbols; transforming the Wiener estimate to symbol estimates in a two dimensional delay-Doppler grid using a two-dimensional symplectic Fourier transform; estimating likelihoods of the symbol estimates in the two dimensional delay-Doppler grid; and generating estimates of information bits from the likelihoods.

Metadata:
- Claim Count in Document: 17.0
- Percentile: 97.0
- Lexical Diversity: 1.80597
- Patent Class: 375.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['16084791', '12195492', '16044414', '15208545', '15743646']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.4387262139984823
- 35 USC 102 Novelty (BERT): 0.4969104108072593
- Combined Prediction Score: 0.44454463367936
- Mean Citation Score: 232.225736
- Max Citation Score: 254.2198
- Similarity Product: 208.8372025764584

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

Dataset: test