中文引用格式： 劉佳，張浩，王波. 一種基于小波聚類的NOMA系統(tǒng)SIC盲檢測算法[J]. 電子技術應用，2023，49(12)：114-119.
英文引用格式： Liu Jia，Zhang Hao，Wang Bo. A novel blind detection algorithm for successive interference cancellation in NOMA system based on wavelet cluster[J]. Application of Electronic Technique，2023，49(12)：114-119.

A novel blind detection algorithm for successive interference cancellation in NOMA system based on wavelet cluster

Abstract： In NOMA downlink multi user transmission scenario, the base station transmits a data packet by multi-user superposition to a destination in the frequency domain. In this system, successive interference cancellation (SIC) receiver is used to eliminate the co-channel interference for each user. Before demodulation and SIC, a blind detection for multi user parameter is required to reduce the signaling overhead of the NOMA system. By utilizing the shape features of constellation map, a blind detection algorithm for multi parameters based on wavelet clustering is proposed, which utilizes the grid-based method in clustering. The simulation results show that the proposed algorithm achieves higher detection performance than the max-log likelihood estimation (MLLE) algorithm under the approximate computation complexity.

Key words : NOMA；blind detection；wavelet cluster；grid-based method