US 12,126,482 B2
Signal processing apparatus and signal processing method
Xingxing Cui, Guangdong (CN); Ying Deng, Guangdong (CN); Zuofeng Zhang, Guangdong (CN); Yenan Bie, Guangdong (CN); and Tian Tian, Guangdong (CN)
Assigned to XI'AN ZHONGXING NEW SOFTWARE CO., LTD., Shaanxi (CN)
Appl. No. 18/031,575
Filed by ZTE CORPORATION, Guangdong (CN)
PCT Filed Jul. 19, 2021, PCT No. PCT/CN2021/107048
§ 371(c)(1), (2) Date Apr. 12, 2023,
PCT Pub. No. WO2022/077985, PCT Pub. Date Apr. 21, 2022.
Claims priority of application No. 202011091511.0 (CN), filed on Oct. 13, 2020.
Prior Publication US 2023/0388173 A1, Nov. 30, 2023
Int. Cl. H04L 27/34 (2006.01); H04B 7/0456 (2017.01)
CPC H04L 27/3405 (2013.01) [H04B 7/0456 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A signal processing apparatus, comprising: a preprocessing unit, a judgment unit, a processing unit and a conversion unit;
the preprocessing unit is configured to generate a joint matrix according to channel matrixes of subcarriers, and perform a parallel-to-serial conversion on QAM signals of the subcarriers to obtain a serial QAM signal comprising a first sub-signal corresponding to each subcarrier;
the judgment unit is configured to determine a constraint relationship of a constellation point in each element according to a determining result obtained by determining that whether the constellation point in each element of the first sub-signal is to be extended in a constellation diagram;
the processing unit is configured to establish a convex optimization model according to the joint matrix, the serial QAM signal and the determining result for the constellation point in each element, and determine a joint time-domain signal of antenna channels according to the constraint relationship of the constellation point in each element and the convex optimization model;
the conversion unit is configured to perform a serial-to-parallel conversion on the joint time-domain signal to obtain a time-domain signal corresponding to each antenna channel.