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Title: Methods and apparatuses using filter banks for multi-carrier spread spectrum signals

A transmitter includes a synthesis filter bank to spread a data symbol to a plurality of frequencies by encoding the data symbol on each frequency, apply a common pulse-shaping filter, and apply gains to the frequencies such that a power level of each frequency is less than a noise level of other communication signals within the spectrum. Each frequency is modulated onto a different evenly spaced subcarrier. A demodulator in a receiver converts a radio frequency input to a spread-spectrum signal in a baseband. A matched filter filters the spread-spectrum signal with a common filter having characteristics matched to the synthesis filter bank in the transmitter by filtering each frequency to generate a sequence of narrow pulses. A carrier recovery unit generates control signals responsive to the sequence of narrow pulses suitable for generating a phase-locked loop between the demodulator, the matched filter, and the carrier recovery unit.
Inventors:
; ;
Issue Date:
OSTI Identifier:
1341817
Assignee:
BATTELLE ENERGY ALLIANCE, LLC (Idaho Falls, ID) INL
Patent Number(s):
9,559,748
Application Number:
15/061,157
Contract Number:
AC07-05ID14517
Resource Relation:
Patent File Date: 2016 Mar 04
Research Org:
Idaho National Lab. (INL), Idaho Falls, ID (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
99 GENERAL AND MISCELLANEOUS; 42 ENGINEERING

Works referenced in this record: