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CN-120223490-B - Signal processing method, communication device, communication system, and readable storage medium

CN120223490BCN 120223490 BCN120223490 BCN 120223490BCN-120223490-B

Abstract

The application provides a signal processing method, communication equipment, a communication system and a readable storage medium, wherein the method comprises the steps of determining a first gain value of an Orthogonal Frequency Division Multiplexing (OFDM) symbol of a current time slot, acquiring a historical gain value which is determined based on a plurality of OFDM symbols of a previous time slot, determining an effective gain value of the OFDM symbol according to the historical gain value and the first gain value of the OFDM symbol, adjusting a received signal based on the effective gain value, enabling a receiver to carry out complementary filtering based on a variance minimum judgment and combining the historical value in a signal demodulation process, effectively solving the problem of demodulation performance degradation caused by unstable adjustment power change, effectively guaranteeing the stability of the signal while guaranteeing the accuracy of power adjustment, and effectively improving the stability of power so as to promote the demodulation performance of the system.

Inventors

  • HU CHENGGONG

Assignees

  • 上海玄戒技术有限公司

Dates

Publication Date
20260508
Application Date
20231225

Claims (9)

  1. 1. A method of signal processing, the method comprising: Acquiring Received Signal Strength Indication (RSSI) of a plurality of sampling points included in an Orthogonal Frequency Division Multiplexing (OFDM) symbol of a current time slot; determining a first gain value of the OFDM symbol as a difference value between an average value of RSSIs of the plurality of sampling points and a target RSSI; Acquiring a historical gain value, wherein the historical gain value is determined based on a plurality of OFDM symbols of the last time slot; Determining an iterative gain coefficient based on a first variance and a second variance, wherein the first variance is the variance of first gain values of a plurality of OFDM symbols of a previous time slot and the first gain values of a plurality of OFDM symbols of a current time slot; Determining an effective gain value of the OFDM symbol based on the historical gain value, the first gain value of the OFDM symbol and the iterative gain coefficient; And adjusting the received signal based on the effective gain value.
  2. 2. The method according to claim 1, wherein the method further comprises: the first variance and the second variance are obtained, and the first variance and the second variance enable variances of the effective gain values to be minimum.
  3. 3. The method according to any one of claims 1-2, wherein the method further comprises: determining a maximum value of first gain values of a plurality of OFDM symbols of the current slot; The maximum value is stored, wherein the stored maximum value is used as a historical gain value for determining an effective gain value of an OFDM symbol of a next time slot.
  4. 4. A signal processing apparatus, the apparatus comprising: A first determining module, configured to obtain received signal strength indication RSSI of a plurality of sampling points included in an orthogonal frequency division multiplexing OFDM symbol of a current slot; A reading module, configured to obtain a historical gain value, where the historical gain value is determined based on a plurality of OFDM symbols of a previous slot; The system comprises a first determining module, a second determining module, a first calculating module and a second calculating module, wherein the first determining module is used for determining an iterative gain coefficient based on a first variance and a second variance, the first variance is the variance of first gain values of a plurality of OFDM symbols of a previous time slot and the first gain values of a plurality of OFDM symbols of a current time slot; and the processing module is used for adjusting the received signal based on the effective gain value.
  5. 5. The apparatus of claim 4, wherein the apparatus further comprises: and the parameter acquisition module is used for acquiring the first variance and the second variance, and the first variance and the second variance enable the variance of the effective gain value to be minimum.
  6. 6. The apparatus according to any one of claims 4-5, further comprising: A third determining module, configured to determine a maximum value of first gain values of a plurality of OFDM symbols of the current slot; And the storage module is used for storing the maximum value, wherein the stored maximum value is used as a historical gain value for determining the effective gain value of the OFDM symbol of the next time slot.
  7. 7. A communication device comprising a storage medium, a processor and a computer program stored on the storage medium and executable on the processor, characterized in that the processor implements the method of any of claims 1 to 3 when executing the computer program.
  8. 8. A chip comprising at least one processor and a communication interface for receiving signals input to or output from the chip, the processor being in communication with the communication interface and implementing the method according to any of claims 1-3 by logic circuitry or execution of code instructions.
  9. 9. A non-transitory computer readable storage medium, wherein instructions in the storage medium, when executed by a processor of a communication device, enable the communication device to perform the method of any one of claims 1-3.

Description

Signal processing method, communication device, communication system, and readable storage medium Technical Field The present application relates to the field of wireless communications technologies, and in particular, to a signal processing method, a communication device, a communication system, and a readable storage medium. Background With the continuous development of wireless communication technology, the fifth generation mobile communication technology (5th Generation Mobile Communication Technology,5G) is a new generation broadband mobile communication technology, and compared with broadband signals in a long term evolution (Long Term Evolution, LTE) system, broadband signals have wider channel bandwidths and richer modulation methods, but at the same time, the fifth generation mobile communication technology also provides new challenges for power control. In the process of receiving signals by the system, the received signals are sampled by an Analog-to-Digital Converter (ADC) due to uncertainty of distance, transmission path, fading degree, interference, modulation mode of the signals and the like, and after digital down conversion, the obtained quantized digital signals have larger variation range, so that demodulation difficulty is increased. Disclosure of Invention The present application aims to solve at least one of the technical problems in the related art to some extent. For this purpose, the following technical scheme is proposed: An embodiment of a first aspect of the present application provides a signal processing method, including: determining a first gain value of an Orthogonal Frequency Division Multiplexing (OFDM) symbol of a current time slot; Acquiring a historical gain value, wherein the historical gain value is determined based on a plurality of OFDM symbols of the last time slot; Determining an effective gain value of the OFDM symbol according to the historical gain value and the first gain value of the OFDM symbol; And adjusting the received signal based on the effective gain value. Optionally, the determining the first gain value of the OFDM symbol of the current slot includes: Acquiring Received Signal Strength Indication (RSSI) of a plurality of sampling points included in the OFDM symbol; And determining a first gain value of the OFDM symbol as a difference value between an average value of RSSIs of the plurality of sampling points and a target RSSI. Optionally, the determining the effective gain value of the OFDM symbol according to the historical gain value and the first gain value of the OFDM symbol includes: obtaining an iteration gain coefficient; based on the historical gain values, a first gain value of the OFDM symbol and the iterative gain coefficient, an effective gain value of the OFDM symbol is determined. Optionally, the obtaining the iterative gain coefficient includes: determining the iterative gain coefficient based on the first variance and the second variance; Wherein, the first variance is the variance of the first gain values of the plurality of OFDM symbols of the previous time slot and the first gain values of the plurality of OFDM symbols of the current time slot; the second variance is a variance of a first gain value of a plurality of OFDM symbols of the current slot. Optionally, the method further comprises: the first variance and the second variance are obtained, and the first variance and the second variance enable variances of the effective gain values to be minimum. Optionally, the method further comprises: determining a maximum value of first gain values of a plurality of OFDM symbols of the current slot; The maximum value is stored as a historical gain value for determining an effective gain value of an OFDM symbol of a next slot. An embodiment of a second aspect of the present application proposes a signal processing apparatus including: The device comprises: A first determining module, configured to determine a first gain value of an orthogonal frequency division multiplexing OFDM symbol of a current slot; A reading module, configured to obtain a historical gain value, where the historical gain value is determined based on a plurality of OFDM symbols of a previous slot; a second determining module, configured to determine an effective gain value of the OFDM symbol according to the historical gain value and the first gain value of the OFDM symbol; and the processing module is used for adjusting the received signal based on the effective gain value. Optionally, the first determining module is specifically configured to: Acquiring Received Signal Strength Indication (RSSI) of a plurality of sampling points included in the OFDM symbol; And determining a first gain value of the OFDM symbol as a difference value between an average value of RSSIs of the plurality of sampling points and a target RSSI. Optionally, the second determining module is specifically configured to: obtaining an iteration gain coefficient; based on the historical gain values