Digital communication system
US6496542B1 · kind B1 · utility
0Cited by
9References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 30, 1998 |
| Grant date | Dec 17, 2002 |
| Priority date | — |
| Expiry date | Oct 30, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/2071
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Disclosed is a digital communication system for mobile communication, which has: a transmitter for mixing and outputting outputs from two independent and equivalently synchronized transmitting circuits in a &pgr;/4 shift QPSK modulation system; and a receiver for receiving a mixed wave transmitted from the transmitting circuits and demodulating the received signal by using information as to its phase and amplitude.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.