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AssigneeKoninklijke Philips Electronics N.V.
InventorsWilhelmus J. Van Houtum, Henry L. Vermeer
Estimating the term…
In a transmission system a signal is transmitted by a primary station to a secondary station via a transmission medium. The secondary station comprises a tunable receiver for tuning to a signal received from the transmission medium. The receiver also comprises a signal conditioning unit such as an equalizer with a channel estimation unit for determining at least one property of the transmission channel. The determined property is used for setting the signal conditioning unit at a later instant. This instant can be at the change of frequency where the setting for the signal conditioning unit for the new frequency are calculated from the determined property. The property can be stored for later use when the receiver returns to the previous frequency. The determined property can be used for determining the setting of another signal conditioning unit which comprises a pre-equalizer used with transmitter in the secondary station.
A transmission system comprising a primary terminal comprising a transmitter coupled via a transmission channel to a secondary terminal, the secondary terminal comprises channel estimation means for determining at least one transmission property of the transmission channel, a receiver with adjustable tuning means for tuning the receiver to a frequency of the signal received from the transmission channel, the secondary terminal further comprises signal conditioning means for conditioning a signal in said secondary terminal in dependence on said transmission property, characterized in that the secondary terminal comprising, setting means for setting parameters of the signal conditioning means in dependence on a previously determined value of the transmission property within the range of frequencies to which the receiver is tunable, and a transmitter for transmitting a signal on a frequency differing from the frequency of the signal received from the transmission medium and in that the signal conditioning means are arranged for conditioning the signal transmitted by the transmitter, wherein the signal conditioning means are arranged for conditioning the signal received from the transmission medium, in that the tuning means are arranged for switching to the frequency, and in that the setting means are arranged for setting the parameters of the signal conditioning means for said frequency at switching to said frequency and wherein the setting means are arranged for setting the parameters of the signal conditioning means to be parameters previously stored for said frequency.
Transmission system comprising a primary terminal comprising a transmitter coupled via a transmission channel to a secondary terminal, the secondary terminal comprises a receiver with adjustable tuning means for tuning the receiver to a frequency of the signal received from the transmission channel, channel estimation means for determining at least one transmission property of the transmission channel, the secondary terminal further comprises signal conditioning means for conditioning a signal in said secondary terminal in dependence on said transmission property, characterized in that the secondary terminal comprising setting means for setting parameters of the signal conditioning means in dependence on a previously determined value of the transmission property within the range of frequencies to which the receiver is tunable, and the setting means are arranged for calculating the parameters of the signal conditioning means in dependence on previously determined parameters of the signal conditioning means by using a model of the transmission medium, wherein the model comprises a multi-path transmission model and the multi-path transmission model comprises one direct path and one indirect path.
Transmission system comprising a primary terminal comprising a transmitter coupled via a transmission channel to a secondary terminal, the secondary terminal comprises channel estimation means for determining at least one transmission property of the transmission channel, the secondary terminal further comprises signal conditioning means for conditioning a signal in said secondary terminal in dependence on said transmission property, a receiver with adjustable tuning means for tuning the receiver to the frequency of the signal received from the transmission medium, characterized in that the signal conditioning means are arranged for conditioning the signal received from the transmission medium, in that the tuning means are arranged for switching to the frequency, and in that the setting means are arranged for storing the parameters of the signal conditioning means for a plurality of frequencies to which the receiver is tunable, and in that the setting means are arranged for setting the parameters of the signal conditioning means to the parameters previously stored for said frequency.
Dependencies are inferred from the claim text.