Wireless system sending signal wave clipping device, transmitter, base station and wave chipping method

Abstract

The embodiment of the invention discloses a wireless system sending signal wave chipping device, a transmitter, a base station and a wave chipping device. The wave chipping device comprises a filter coefficient division unit, a certified program generator (CPG), a buffer unit and a front half part complex multiplication operation result output unit, wherein the filter coefficient division unit is used for dividing a filter coefficient sequence into a front half part and a rear half part that are in conjugate symmetry by taking a filter coefficient at the middle point of the sequence as a symmetric point; the CPG is used for carrying out a complex multiplication operation on a peak value noise signal with the front half part and the rear half part respectively, carrying out an operation on a common multiplication operation item in an equation of the complex multiplication operation of the front half part and the rear half part, respectively applying the calculated result to perform the complex multiplication operation of the peak value noise signal and the front half part and the rear half part, and respectively obtaining the complex multiplication operation results of the front half part and the rear half part; the buffer unit is used for buffering the complex multiplication operation result of the rear half part; and the front part complex multiplication operation result output unit is used for releasing the CPG and outputting the complex multiplication operation result of the front half part after finishing processing various order coefficients of the front half part. According to the embodiment of the invention, repeated multiplication operations can be avoided, and therefore consumption of multiplier resources is saved.

Description

technical field [0001] The invention relates to the technical field of communication, and more specifically relates to a wireless system transmission signal clipping device, a transmitter, a base station and a clipping method. Background technique [0002] In the field of wireless communication, in order to improve the working efficiency of the power amplifier and to prevent the power amplifier from being damaged by the noise signal with too large peak value, the transmitter needs to clip the transmitted signal before transmitting the signal. [0003] At present, the most widely used clipping method includes nuclear clipping. Its basic principle is to first find out the data samples whose amplitude of the transmitted signal exceeds a given threshold in the time domain of the original transmitted signal, and then according to a certain decision strategy, from The data samples that need to be eliminated are extracted from the data samples exceeding the given threshold. The me...

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Problems solved by technology

[0008] In view of this, the embodiment of the present invention provides a wireless system transmission signal clipping device, a transmitter and a clipping method to solve the problems of high hardware system cost and power consumption in the prior art

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