Issued Patents All Time
Showing 26–50 of 56 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6034952 | Method and instrument for measuring receiving SIR and transmission power controller | Tomohiro Dohi, Syunsuke Seo, Yukihiko Okumura, Mamoru Sawahashi | 2000-03-07 |
| 6031415 | Matched filter circuit for spread spectrum communication | Guoliang Shou, Changming Zhou, Makoto Yamamoto, Mamoru Sawahashi, Sunao Takatori | 2000-02-29 |
| 5953324 | CDMA mobile communication method, system and mobile station apparatus | — | 1999-09-14 |
| 5926512 | Matched filter circuit | Guoliang Shou, Changming Zhou, Makoto Yamamoto, Sunao Takatori, Mamoru Sawahashi | 1999-07-20 |
| 5914943 | Apparatus and method for establishing acquisition of spreading code in CDMA transmission system | Kenichi Higuchi, Mamoru Sawahashi | 1999-06-22 |
| 5910948 | Acquisition scheme and receiver for an asynchronous DS-CDMA cellular communication system | Guoliang Shou, Changming Zhou, Xuping Zhou, Makoto Yamamoto, Sunao Takatori +1 more | 1999-06-08 |
| 5898665 | Coherent tracking apparatus and method for CDMA receiver | Mamoru Sawahashi | 1999-04-27 |
| 5896374 | Variable rate transmission method, transmitter and receiver using the same | Yukihiko Okumura, Koji Ohno, Akihiro Higashi | 1999-04-20 |
| 5850393 | Transmitter receiver for mobile communication system | — | 1998-12-15 |
| 5848096 | Communication method and system using different spreading codes | Guoliang Shou, Changming Zhou, Makoto Yamamoto, Mamoru Sawahashi, Sunao Takatori | 1998-12-08 |
| 5815812 | Soft handoff system of spread spectrum communication | Changming Zhou, Guoliang Shou, Makoto Yamamoto, Mamoru Sawahashi, Sunao Takatori | 1998-09-29 |
| 5790590 | Matched filter circuit | Guoliang Shou, Changming Zhou, Makoto Yamamoto, Sunao Takatori, Mamoru Sawahashi | 1998-08-04 |
| 5768306 | Sliding correlator used in CDMA systems to establish initial synchronization | Mamoru Sawahashi | 1998-06-16 |
| 5748623 | Code division multiple access transmitter and receiver | Mamoru Sawahashi | 1998-05-05 |
| 5745531 | Automatic gain control apparatus, communication system, and automatic gain control method | Mamoru Sawahashi | 1998-04-28 |
| 5740096 | Filter circuit for communication | Guoliang Shou, Changming Zhou, Makoto Yamamoto, Mamoru Sawahashi, Sunao Takatori | 1998-04-14 |
| 5734648 | CDMA communications method and system | Mamoru Sawahashi | 1998-03-31 |
| 5715235 | Communication system capable of performing FDMA transmission | Mamoru Sawahashi, Tomohiro Dohi | 1998-02-03 |
| 5694388 | CDMA demodulator and demodulation method | Mamoru Sawahashi, Hidehiro Andou | 1997-12-02 |
| 5692015 | Coherent detector and a coherent detection method for a digital communication receiver | Akihiro Higashi, Koji Ohno, Mamoru Sawahashi | 1997-11-25 |
| 5684832 | Maximum likelihood differential detecting method and differential detector thereof | Mamoru Sawahashi, Tomohiro Dohi | 1997-11-04 |
| 5654667 | Linear predictive differential detection method for DPSK waves | — | 1997-08-05 |
| 5652765 | Receiver and repeater for spread spectrum communications | Mamoru Sawahashi, Akihiro Higashi, Koji Ohno, Tomohiro Dohi | 1997-07-29 |
| 5638362 | Correlation detector and communication apparatus | Tomohiro Dohi, Mamoru Sawahashi | 1997-06-10 |
| 5619167 | Maximum likelihood decoding coherent detection method | — | 1997-04-08 |