H04B 10/6164
Estimation or correction of the frequency offset between the received optical signal
Official title: {Estimation or correction of the frequency offset between the received optical signal and the optical local oscillator}
H04B10/6164 (Estimation or correction of the frequency offset between the received optical signal) appears on 202 US grants and 227 published applications in this corpus.
Search patents in H04B- Granted patents
- 202
- Published applications
- 227
- Assignees
- 73
- Inventors
- 408
- Latest grant
- 22 Sep 2026
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By publication year. 2026 runs to 8 Oct.
Recent patents
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- Coherent detection method and apparatus, and optical transmission system28 Apr 2026US 12,615,093 B2Zte Corporation
- Optical receiving apparatus and signal detection method17 Sep 2026US 2026/0280718 A1NTT, Inc.
- Communication apparatus, frequency offset estimation method and program13 Aug 2026US 2026/0238339 A1NTT, Inc.
- Optical transmission and reception device and optical receiver7 May 2026US 2026/0128799 A1Mitsubishi Electric Corporation
- Coherent optical receiving method and receiver16 Apr 2026US 2026/0106673 A1UIF (University Industry Foundation), Yonsei University
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Most cited
By later US patents
- Generation of an optical local-oscillator signal for a coherent-detection scheme51US 9,154,231 B2Alcatel Lucent · 2015
- Method and apparatus for transmitter IQ skew and insertion loss detection for coherent optical systems50US 10,574,362 B2Infinera Corporation · 2020
- Coherent phase-shift-keying28US 7,747,177 B2Alcatel-Lucent USA Inc. · 2010
- Feedback-controlled coherent optical receiver with electrical compensation/equalization16US 7,406,269 B2Discovery Semiconductors, Inc. · 2008
- Frequency estimation in an intradyne optical receiver15US 8,073,345 B2Alcatel Lucent · 2011