| 摘要: |
| 由于物理上行控制信道格式2发送的解调参考信号所占发送信号比例较小，精确检测发送数据具有一定难度。针对现有半盲检测算法在有相位干扰情况下性能较差的问题，通过加入相位补偿过程，利用信号的相关性最小化损失函数，结合现有算法提出了基于相位补偿的半盲检测算法。仿真结果表明，所提算法在信噪比为-10 dB的情况下信号检测误码率相比传统算法下降了48.49%，并且所提算法的适用性相较基于信道复用的半盲检测算法得到了提升，适合实际工程应用。 |
| 关键词: 5G系统 物理上行控制信道 信号检测 半盲检测 相位补偿 |
| DOI： |
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| 基金项目:2019年重庆市技术创新与应用发展专项重大主题专项(cstc2019jscx-zdztzxX0002) |
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| A semi-blind detection algorithm based on phase recovery in 5G systems |
| GAO Jinmeng,CHENG Fang,DENG Bingguang |
| (School of Communication and Information Engineering,Chongqing University of Posts and Telecommunications,Chongqing 400065,China) |
| Abstract: |
| Because the demodulation reference signal sent by physical uplink control channel format 2 accounts for a small proportion of the transmitted signal,it is difficult to detect the outgoing data accurately.For the problem that the performance of semi-blind detection algorithm is poor in the case of phase interference,a semi-blind detection algorithm based on phase compensation is proposed by using the correlation minimization loss function of signals and the existing algorithms.Simulation results show that the proposed algorithm reduces the bit error rate of signal detection by 48.49% compared with the traditional algorithm when the signal-to-noise ratio is -10 dB,and compared with the semi-blind detection algorithm based on channel multiplex,the proposed algorithm is more suitable for practical engineering applications. |
| Key words: 5G system physical uplink control channel signal detection semi-blind detection phase compensation |
《电讯技术》编辑部 