Power amplifier and method for CDMA system
A technology of power amplifier and power amplification, which is applied in the field of CDMA system and can solve problems such as difficult to precisely control power
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[0035] In a preferred embodiment, in order to have linearity while removing non-linearity, it is preferable to adjust the voltage level input to the power amplifier, rather than to adjust the amplification control signal of the power amplifier.
[0036] image 3 It is a schematic block diagram of a power linearization circuit of a CDMA system according to a preferred embodiment of the present invention. Such as image 3 As shown, an adjustment gain (a[n]) is added to the transmission gain signal g[n] to generate linearity in the power amplifier.
[0037] refer to image 3, the power amplifier preferably includes: a linearization input unit 100, which can eliminate the nonlinearity of the power amplifier 300 by compensating the level of an input signal; an amplification controller 200, which can control the amplification factor of the power amplifier 300; and power Amplifier 300 amplifies the power of the signal s(t) output from the linearization input unit 100 under the con...
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