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Priority claimed from PCT/EP1997/000488external-prioritypatent/WO1998034357A1/en
Application filed by Nokia Telecommunications OyfiledCriticalNokia Telecommunications Oy
Priority to NO993682ApriorityCriticalpatent/NO993682L/en
Publication of NO993682D0publicationCriticalpatent/NO993682D0/en
Publication of NO993682LpublicationCriticalpatent/NO993682L/en
I et mobilt kommunikasjonssystem underlegges signaler som er overført fra mobile stasjoner som beveges i forhold til en basisstasjon en Doppler-effekt. En teknikk beskrives for kompensering for denne Doppler-effekt ved anvendelse av estimerte bit-avgjørelser for mottatte bits som er til- strekkelig nær et nullfase-offsetpunkt slik at det ikke er blitt ødelagt av Doppler-effekten. Doppler-skift målt ved anvendelse av disse estimerte bits kan'deretter forsynes til bits av signalet som er lengre borte fra nullfase-off- setpunktet.In a mobile communication system, signals transmitted from mobile stations that are moved relative to a base station are subject to a Doppler effect. One technique is described for compensating for this Doppler effect by using estimated bit decisions for received bits sufficiently close to a zero phase offset point so that it has not been destroyed by the Doppler effect. Doppler shifts measured using these estimated bits can then be supplied to bits of the signal farther away from the zero phase offset point.
NO993682A1997-02-041999-07-29
Compensation for Doppler shifts in a mobile communication station
NO993682L
(en)
System to generate a doppler correction factor and method to compensate for doppler shift in a signal transmitted between a mobile station and a base station in a mobile communication system