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机构地区:[1]上海大学通信与信息工程学院,上海200444
出 处:《工业控制计算机》2024年第1期76-78,共3页Industrial Control Computer
摘 要:为满足高速率卫星通信系统下接收端的高接收信噪比需求,设计了一种基于GPU的多天线组阵合成卫星信号的实现方法。基于全频谱合成的传统方案,加入数字下变频级联多相滤波的非均匀信道化模块,提升处理信号带宽内非均匀分布子信道的灵活性,并采用CPU+GPU异构平台进行高效实现。经仿真及实际信号测试,结果表明该设计相较传统CPU平台实现取得约10~20倍的加速比,为接收端的信号实时处理提供可能性。A method for synthesizing satellite signals using GPU-based antenna arraying is designed to meet the high signal-to-noise ratio(SNR)requirements of a high-rate satellite communication system at the receiver.Based on the traditional approach of full-spectrum synthesis,a non-uniform channelization module with digital down-conversion and cascaded polyphase filtering is introduced to improve the flexibility in handling non-uniformly distributed sub-channels within the signal bandwidth.The implementation is performed on a heterogeneous CPU+GPU platform for high efficiency.Through simulations and actual signal tests,the results show that the proposed design achieves a speedup of approximately 10~20 times compared to a traditional CPU platform,providing the possibility of real-time signal processing at the receiver.
关 键 词:多天线组阵 卫星信号 信号合成 GPU 并行设计
分 类 号:TN927.2[电子电信—通信与信息系统] TN820[电子电信—信息与通信工程]
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