Extended time tracking and peak energy in-window demodulation for use in a direct sequence spread spectrum system
December 6, 2015. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesSpread spectrum modem Bi-directional data telemetry system Distribution energy management system Digital cordless telephone systems Radio communication system using spread spectrum techniques System and method for generating signal waveforms in a CDMA cellular telephone system Direct sequence spread spectrum (DSSS) communications system with frequency modulation utilized to achieve spectral spreading CDMA microcellular telephone system and distributed antenna system therefor System and method for generating signal waveforms in a CDMA cellular telephone system Portable cellular telephone using spread spectrum communication with mobile transceiver InventorAssigneeApplicationNo. 568053 filed on 12/06/1995US Classes:375/152, Matched-filter-type receiver375/149, Having specific code synchronization375/342Locating predetermined portion of pulseExaminersPrimary: Tse, Young T.Attorney, Agent or FirmInternational ClassH04R 001/707AbstractA direct sequence spread spectrum communication system in a digital cordless telephone having a basestation and a handset that each implement an extended .linevert split.EE.linevert split.+.linevert split.E.linevert split.-.linevert split.L.linevert split.-.linevert split.LL.linevert split. time tracking system and peak matched filter demodulation within a related window to permit one sample per chip analog-to-digital conversion and demodulation for longer code sequences (providing savings in hardware and complexity) and to permit enhanced two sample per chip analog-to-digital conversion and demodulation for shorter code sequences (providing more robust fading immunity). | |
