A heterogeneous dual-core receiver system that combines advanced reduced instruction set computing (RISC) machines (ARM) and field programmable gate array (FPGA) is proposed for low-field nuclear magnetic resonance (NMR) applications. This system has advantages, such as high speed analog to digital converter (ADC) acquisition and variable gain control. In this design, the system generator, a system development tool from the Xilinx Company, can implement internal signal processing functions. Experimental results showed that, compared with the traditional receiver, the digital receiver had compact structure, strong reconstruction, high sampling rate and low cost. In addition, variable gain control enabled the digital receiver to achieve a large dynamic range such that the signal-to-noise ratio (SNR) of the reconstructed image could be improved.
LIU Ying
,
ZHANG Yu-wen
,
ZHANG Hao-wei
,
LIANG Zhen
. A Heterogeneous Dual-Core Receiver System for Magnetic Resonance Applications[J]. Chinese Journal of Magnetic Resonance, 2017
, 34(1)
: 100
-107
.
DOI: 10.11938/cjmr20170112
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