Shahab Oveis Gharan

This inventor holds 71 USPTO granted patents and 9 published patent applications, plus 5 CIPO patents and 12 EPO patents, primarily in Digital Communications (CPC class H04B). Top assignees: Ciena Corporation, Iena Corporation. Active years: 2014-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Shahab Oveis Gharan. Retrieved from https://idiyas.com/inventor/shahab-oveis-gharan

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

USPTO Granted Patents = 71 (Patent Applications = 9)

% Patents Active = 100.0

CIPO Patents = 5 (Patent Applications = 2)

EPO Patents = 12 (Patent Applications = 18)

Average Co-Inventor Count = 3.3

ph-index = 8

Forward Citations = 341(Granted Patents)

Forward Citations (Not Self Cited) = 242(Dec 10, 2025)

Inventors with similar research interests:

Location History:

Palo Alto, CA (US) (2021 - 2022)
Nepean, CA (2015 - 2023)
Ottawa, CA (2014 - 2024)

Company Filing History:

Years Active: 2014-2026

Loading Chart...

Areas of Expertise:

Digital-To-Analog Converter

Forward Error Correction

Probabilistic Constellation Shaping

Nonlinear Impairments

Optical Transceivers

Equalization Techniques

Spectral Efficiency

Clock Recovery

Chromatic Dispersion

Multi-Dimensional Symbols

Frequency Division Multiplexing

Signal Processing

71 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 12756478 - Method and system for blind learning of volterra equalizer parameters (2026-10-06),

2. 12671500 - Wavelength diversity turbulence mitigation method and apparatus for free-space optical communications (2026-06-30),

3. 12640902 - Blind Godard-based timing phase detector for T-spaced transmissions (2026-05-26),

4. 12500797 - Duty-cycle distortion (DCD) and bit-level inter-symbol interference (ISI) pre- compensation for a digital-to-analog converter (DAC) (2025-12-16),

5. 12483352 - Probabilistic constellation shaping of multi-dimensional symbols for improved tolerance to nonlinear impairments (2025-11-25),

6. 12483336 - Method and system for fine frequency finesse filtering (2025-11-25),

7. 12476715 - Method and system for equalizer control per frequency division multiplexed (FDM) signal (2025-11-18),

8. 12476711 - In-phase (I) / quadrature (Q) correlation dither for modulator quadrature control (2025-11-18),

9. 12375326 - Non-linear precoding for maximum likelihood sequence estimation (MLSE) receiver (2025-07-29),

10. 12301267 - Apparatuses and methods for facilitating joint precoding and probabilistic constellation shaping (2025-05-13),

11. 12191994 - Assessing operating conditions of a receiver in a communication network based on forward error correction decoding properties (2025-01-07),

12. 11876525 - Digital-to-analog converter (DAC) distortion pre-compensation (2024-01-16),

13. 11831431 - Probabilistic constellation shaping of multi-dimensional symbols for improved tolerance to nonlinear impairments (2023-11-28),

14. 11818242 - Built-in jitter loading and state of polarization generation to characterize optical transceivers (2023-11-14),

15. 11817873 - Digital-to-analog converter (DAC) architecture optimization (2023-11-14),

Title: The Innovative Contributions of Shahab Oveis Gharan

Introduction

Shahab Oveis Gharan is a prolific inventor based in Ottawa, Canada, known for his groundbreaking contributions in the field of communication technology. With an impressive portfolio of 61 patents, he continues to make significant advancements that enhance the efficiency and performance of communication networks.

Latest Patents

Among his latest innovations, Gharan has developed a system for assessing the operating conditions of a receiver in communication networks based on forward error correction (FEC) decoding properties. This system is adept at measuring FEC decoding properties associated with FEC-encoded bits or symbols at a receiver device within a network. The assessment is grounded in comparisons between the FEC decoding properties and reference FEC data, which aids in maintaining optimal performance.

Additionally, Gharan has introduced a digital-to-analog converter (DAC) distortion pre-compensation apparatus. This invention involves sophisticated circuitry that generates a predicted error signal using a distortion model tailored to address circuit component mismatches in a DAC. The pre-compensated digital signal produced is crucial for improving the accuracy of analog signal conversion, thereby enhancing overall signal quality.

Career Highlights

Shahab Oveis Gharan’s career has been highlighted by his tenure at notable companies such as Ciena Corporation and Iena Corporation, where he leveraged his expertise to contribute to various innovative projects. His work in these organizations has solidified his reputation as a leading figure in the world of patentable inventions.

Collaborations

Throughout his career, Gharan has collaborated with talented individuals such as Kim Bryon Roberts and Michael Andrew Reimer. These partnerships have enriched his projects, fostering an environment of creativity and innovation that has led to numerous successful patents.

Conclusion

In summary, Shahab Oveis Gharan's extensive patent portfolio and his innovative spirit contribute significantly to advancements in communication technologies. His latest patents reflect a commitment to improving system efficiency and performance, and his collaborations have further propelled his contributions to the field. Gharan stands as a remarkable inventor whose work continues to impact the technology landscape profoundly.

Profile summary based on public USPTO records.