Patent ID: 7230996
Filing Date: 2007-06-12
Classification: H04B

Abstract:
1. A transmitting circuit device, comprising: a first signal source which outputs a first signal that is a binary or multilevel discrete analog signal or an analog signal with a binary or multilevel discrete envelope and that has signal components and quantization noise components; a second signal source which outputs a second signal composed of the quantization noise components; a first amplifier which amplifies the first signal; a combiner which cancels out the quantization noise components by combining an output of the first amplifier and the second signal; a signal processor which performs signal processing on incoming third vector data, and thereby outputs (1) first vector data that is a signal whose envelope can take a smaller number of values when vector-modulated than can a signal envelope obtained by vector-modulating the third vector data and (2) second vector data that is a signal obtained by subtracting the third vector data from the first vector data, wherein: