Continuous phase modulation in wireless communications

By adopting continuous phase modulation and its variants in 5G NR technology, combined with DFT pre-coding and frequency domain equalization, the problems of low transceiver energy efficiency and poor nonlinear power amplifier robustness in millimeter wave scenarios are solved, and a higher Communication flexibility and frequency domain user reuse effect.

CN119213723APending Publication Date: 2024-12-27QUALCOMM INC
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Patent Information

Application Number
CN202380041050.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Priority Date
2022-05-27
Filing Date
2023-05-19
Publication Date
2024-12-27

AI Technical Summary

Technical Problem

The existing 5G NR technology has problems with low transceiver energy efficiency and poor robustness to nonlinear power amplifiers in millimeter wave scenarios with high bandwidth and limited coverage, and multiple access technology is in user multiplexing and frequency domain modulation. There are restrictions.

Method used

Continuous phase modulation (CPM) and its variants such as constrained envelope CPM (ceCPM) and multi-amplitude CPM (MACPM), combined with DFT pre-coding and frequency domain equalization technology, dynamically configure modulation schemes and parameters to adapt to communication conditions and improve frequency Domain user reuse and tolerance for nonlinear distortion.

Benefits of technology

It improves communication flexibility between wireless devices and energy efficiency in high bandwidth scenarios, enhances the robustness of nonlinear power amplifiers, and improves frequency domain user multiplexing and channel tolerance through dynamic modulation parameter optimization.

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Abstract

Aspects presented herein may improve communications at high bandwidth or limited coverage scenarios, which may specify high transceiver energy efficiency and robustness to non-linear power amplifiers. In one aspect, a first network node sends first information indicating at least one of a modulation scheme or a modulation parameter to a second network node, where the modulation scheme is from a set of modulation schemes and the modulation parameter is associated with the modulation scheme, and where the set of modulation schemes includes one or more of: APSK, QAM, CPM, ceCPM, or MACPM. The first network node receives second information from the second network node indicating at least one of the modulation scheme for at least one transmission or the modulation parameter associated with the modulation scheme.
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