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(cè)算法[J]. 電子技術(shù)應(yīng)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
Liu Jia1，2,，Zhang Hao1,，Wang Bo1
1.School of Information and Communication Engineering， Guilin University of Electronic Technology,， Guilin 541004,， China； 2.Samsung Research China-Beijing （SRC-B）,， Beijing 100028,，China
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
