US 9,814,047 B2
Multiband signal processing apparatus and method
Xiangming Kong, Shenzhen (CN)
Assigned to Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed by Huawei Technologies Co., Ltd., Shenzhen, Guangdong (CN)
Filed on Feb. 10, 2017, as Appl. No. 15/429,658.
Application 15/429,658 is a continuation of application No. PCT/CN2014/084079, filed on Aug. 11, 2014.
Prior Publication US 2017/0156150 A1, Jun. 1, 2017
Int. Cl. H04B 1/26 (2006.01); H04W 72/04 (2009.01); H04W 52/02 (2009.01); H04L 12/26 (2006.01)
CPC H04W 72/0453 (2013.01) [H04L 43/16 (2013.01); H04W 52/0203 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A multiband signal processing apparatus, comprising:
a multi-tone local oscillator signal transmission channel comprising a band-pass filter and a frequency mixer;
a multi-tone local oscillator signal generating unit configured to:
generate a multi-tone local oscillator signal according to frequency response information of at least one device comprised in the multi-tone local oscillator signal transmission channel, and
transmit the multi-tone local oscillator signal to the band-pass filter;
wherein the band-pass filter is configured to receive and filter the generated multi-tone local oscillator signal to generate a filtered multi-tone local oscillator signal; and
wherein the frequency mixer is configured to frequency mix a multiband signal and the multi-tone local oscillator signal, in a preset area that comprises a location in which a non-zero spectral component of the multiband signal is located, the multi-tone local oscillator signal has a non-zero spectral component, and in at least one multiplied frequency of multiple contiguous multiplied frequencies of a fundamental frequency, the multi-tone local oscillator signal has no non-zero spectral component.