A Synchronous Compression Method Based on Compressed Sensing for Time-interleaved Sampling

摘要：

The time-interleaved sampling technique, which can reduce the requirement to the speed of ADCs by using parallel operation of multiple ADCs, has become a practical solution for high speed data acquisition. To further reduce the quantity of the acquired data for frequency-sparse signals, this paper presents a new data acquisition and compression method combining time-interleaved sampling technique with Compressed Sampling (CS) theory. We implement synchronous data compression using Field Programmable Gate Array (FPGA) device, in which the asynchronous data streams are first synchronized through multistage buffering method and then compressed by CS approach. An important strength of this method lies in that the entire design is synchronized by a common clock, which allows the circuit to work at a high rate. From the perspective of data stream, we obtain a compressed data steam at a sub-Nyquist rate which reduces the load of storage and transmission significantly. The simulation experiments verify that the original signal can be recovered exactly from the compressed data with overwhelming probability.

关键词： time-interleaved sampling sub-Nyquist synchronous compression compressed sensing

作者: Jianxin Cai Junjie Wang Shuang Cheng Xu Liu

作者单位: The higher Educational Key Laboratory for Measuring & Control Technology and Instnmentations of Heil The higher Educational Key Laboratory for Measuring & Control Technology and Instnmentations of Heil

会议类型: 国际会议

会议名称: 2012 International Conference on Measurement,Information and Control(2012测量、信息与控制国际会议 ICMIC2012)

会议地点: 哈尔滨

会议语种:英文

页码: 59-62

在线出版日期: 2012-05-18（万方平台首次上网日期，不代表论文的发表时间）