Method and system for scaling a multi-channel signal
First Claim
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1. A communication unit comprising:
- a transmitter;
a processor, configured to facilitate receiving information representative of a configuration for a plurality of channels;
determining whether a scaling factor is to be applied;
determining the scaling factor responsive to the configuration for producing a signal having a substantially constant amplitude;
scaling the signal provided by a combination of the plurality of channels utilizing the scaling factor; and
providing the signal to the transmitter, responsive to the scaling, wherein the scaling factor results in the signal, as scaled, having the substantially constant amplitude, anda data mapper receiving the plurality of channels, and outputting the signal, wherein the scaling is performed in the data mapper,wherein the configuration includes a number of channels, and a weighting of channels.
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Abstract
A communication unit is provided having a transmitter and a processor (103). The processor (103) receives information (105) representative of a configuration of physical channels (107). The processor (103) determines a scaling factor responsive to the information (105) and facilitates scaling a signal (109, 111) provided by a combination of the channels utilizing the scaling factor. The scaled signal (109, 111) is provided to the transmitter.
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Citations
17 Claims
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1. A communication unit comprising:
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a transmitter; a processor, configured to facilitate receiving information representative of a configuration for a plurality of channels;
determining whether a scaling factor is to be applied;
determining the scaling factor responsive to the configuration for producing a signal having a substantially constant amplitude;
scaling the signal provided by a combination of the plurality of channels utilizing the scaling factor; and
providing the signal to the transmitter, responsive to the scaling, wherein the scaling factor results in the signal, as scaled, having the substantially constant amplitude, anda data mapper receiving the plurality of channels, and outputting the signal, wherein the scaling is performed in the data mapper, wherein the configuration includes a number of channels, and a weighting of channels.
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2. A communication unit comprising:
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a transmitter; a processor, configured to facilitate receiving information representative of a configuration for a plurality of channels;
determining a scaling factor responsive to the configuration;
scaling a signal provided by a combination of the plurality of channels utilizing the scaling factor; and
providing the signal to the transmitter, responsive to the scaling;a data mapper receiving the plurality of channels and outputting the signal; an in-phase scale multiplier; and a quadrature scale multiplier; wherein the scaling is performed in the in-phase scale multiplier and the quadrature scale multiplier, and wherein the signal, as scaled, has a substantially constant amplitude. - View Dependent Claims (3, 4, 5, 6, 7)
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8. A modulator, comprising:
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a data mapper, configured to facilitate receiving a plurality of physical channels, wherein an amplitude of the respective physical channels can differ;
combine the plurality of physical channels to form a signal;
adjust the signal responsive to a scaling factor to provide an adjusted signal having a substantially constant signal level that is independent of the plurality of physical channels; and
output the adjusted signal to a transmitter; anda processor, configured to;
facilitate determining a configuration of the plurality of physical channels;
determining whether the scaling factor is to be applied;
compute the scaling factor responsive to the configuration; and
apply the scaling factor to the signal,wherein the configuration includes a number of channels, and a weighting of channels, and wherein the transmitter transmits the signal at a substantially constant transmit level for a first configuration and for a different configuration of the plurality of physical channels. - View Dependent Claims (9, 10, 11)
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12. A method of scaling a signal under different channel configurations, comprising:
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inputting a plurality of physical channels of a signal, wherein each physical channel of the plurality of physical channels can have a different configuration; scaling the plurality of physical channels, wherein the scaling is responsive to a configuration including a number of channels, and a weighting of respective physical channels; providing, responsive to the scaling, an in-phase signal and a quadrature signal, the in-phase signal and the quadrature signal being a combination of the plurality of physical channels as scaled; performing pulse shaping and interpolation on the in-phase signal and the quadrature signal; and combining the in-phase signal and the quadrature signal to provide an output signal, the output signal coupled to a transmitter at a substantially constant amplitude, wherein the transmitter transmits the output signal at a substantially constant transmit level for a first configuration and for a different configuration of the plurality of physical channels. - View Dependent Claims (13, 14, 15, 16, 17)
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Specification