Invention Grant
- Patent Title: Frequency division multiplex single-sideband modulation system
- Patent Title (中): 频分多单一单边调制系统
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Application No.: US3676598DApplication Date: 1970-06-08
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Publication No.: US3676598APublication Date: 1972-07-11
- Inventor: KURTH CARL FERDINAND
- Applicant: BELL TELEPHONE LABOR INC
- Assignee: Nokia Bell Labs
- Current Assignee: Nokia Bell Labs
- Priority: US4403070 1970-06-08
- Main IPC: H04J1/04
- IPC: H04J1/04 ; H04J1/05 ; H04J1/02
Abstract:
A frequency division multiplex single-sideband modulation system uses a multiplexed digital filter, the passband of which is sequentially shifted from one multiplexed channel to another in synchronization with an input time division multiplex commutator and a frequency multiplexer modulator. In other embodiments of the invention selected spectral components are advantageously emphasized by signal processing techniques employing repetitive sampling prior to modulation and filtering.
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