US 12,301,397 B2
Symbol processing method and apparatus
Qianli Ma, Chengdu (CN); Fengwei Liu, Chengdu (CN); and Huang Huang, Shenzhen (CN)
Assigned to Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed by Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed on Apr. 29, 2022, as Appl. No. 17/733,783.
Application 17/733,783 is a continuation of application No. PCT/CN2019/114462, filed on Oct. 30, 2019.
Prior Publication US 2022/0263697 A1, Aug. 18, 2022
Int. Cl. H04L 27/26 (2006.01)
CPC H04L 27/2613 (2013.01) [H04L 27/2607 (2013.01); H04L 27/2636 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A symbol processing method, comprising:
obtaining a plurality of complex-valued symbols;
grouping the plurality of complex-valued symbols into a plurality of sets, wherein each set corresponds to one transmit symbol, the plurality of sets comprise a first set corresponding to a first transmit symbol and a second set corresponding to a second transmit symbol, the first transmit symbol and the second transmit symbol are continuous in time, and the first transmit symbol is located before the second transmit symbol;
performing a copy operation on the first set and the second set, so that both the first set and the second set have a first complex-valued symbol, wherein a time domain index of a start position of a first subset formed by the first complex-valued symbol in the first set is the same as a time domain index of a start position of a second subset formed by the first complex-valued symbol in the second set;
after the copy operation, performing signal processing on the first set and the second set to generate the first transmit symbol and the second transmit symbol,
wherein the signal processing comprises a cyclic shift or frequency domain weighting, and the signal processing causes the start position of the first subset to correspond to a position before a first reference point of the first transmit symbol and an end position of the first subset to correspond to a position after the first reference point of the first transmit symbol, wherein the start position of the first subset in the first set corresponds to a tail position of the first transmit symbol, and the end position of the first subset corresponds to a header position of the first transmit symbol, and further causes the start position of the second subset to correspond to a position before a second reference point of the second transmit symbol and an end position of the second subset to correspond to a position after the second reference point of the second transmit symbol, and wherein the first reference point represents an end position of the transmit symbol, and the second reference point represents a position of a truncated cyclic prefix of the transmit symbol, the position of the truncated cyclic prefix being a start position of a transmit symbol component between the position of the truncated cyclic prefix and the end of the transmit symbol copied to a position before the transmit symbol; and
performing phase adjustment on one or both of the first transmit symbol and the second transmit symbol, so that a symbol component whose end position is the first reference point in the first transmit symbol is the same as a symbol component whose end position is the second reference point in the second transmit symbol after the adjustment.