PATENT CLAIM ANALYSIS

Application Number: 16152351
Application Type: Utility
Filing Date: 2018-10
Publication Date: 2019-05
Patent Classification: ["398", "185000"]

Abstract:
Consistent with the present disclosure, an encoder circuit is provided at a transmit side of an optical fiber link that maps an input sequence of bits of fixed length k a sequence of symbols of a codeword of length n, such that the symbols of the codeword define a predetermined transmission probability distribution. Preferably, each symbol of the codeword is generated during a corresponding clock cycle, such that after n clock cycles, a complete codeword corresponding to the input bit sequence is output. On a receive end of the link, a decoder is provided that outputs the k-bit sequence every n clock cycles. Accordingly, buffers need not be provided at the output of the encoder and the input of the decoder, such that processing of the input sequence, codewords, and output sequence may be achieved efficiently without large buffers and complicated circuitry. Moreover, the input sequence, with any binary alphabet may be matched to a desired output distribution with any arbitrary alphabet. Accordingly, probabilistic constellation shaping may be achieved over constellations of arbitrary size. In addition, relatively long codewords, may be encoded and decoded with the apparatus and method disclosed herein. Accordingly, for a fixed SNR a higher SE (more bits per symbol) can be achieved. Alternatively, for a fixed SE, a lower SNR may be sufficient. Moreover, the resulting SE may be finely tailored to a particular optical link SNR to provide data transmission rates that are higher than the low order modulation formats that would otherwise be employed for optical signals carried by such links.

Claim (Index 25):
An apparatus in accordance with  claim 17 , wherein the decoder circuit calculates a parameter, x, based on one of the n codeword symbols, calculates a parameter, y, such that y is greater than n, and determines that x is within a sub-interval of y corresponding to said one of the n codeword symbols.

Metadata:
- Claim Count in Document: 89.0
- Percentile: 97.0
- Lexical Diversity: 2.25
- Patent Class: 398.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: False
- Related Applications: ['16107141', '11186265', '14867930', '14105854', '13410614']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7057966807685799
- 35 USC 102 Novelty (BERT): 0.5113743656560141
- Combined Prediction Score: 0.6863544492573234
- Mean Citation Score: 220.91995
- Max Citation Score: 243.58203
- Similarity Product: 185.3945355717516

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

Dataset: test