Paper Info
Title
Novel real-time system design for floating-point sub-Nyquist multi-coset signal blind reconstruction
Abstract
We propose a novel real-time system design for multiband signal blind reconstruction using multi-coset sampling theory. Multi-channel signals are acquired under sub-Nyquist sampling frequency to perfectly reconstruct the original signal spectrum. A novel system design with Field-Programmable Gate Array (FPGA) implementation is presented in this paper. There are two main contributions in this paper. Firstly, the FPGA system uses 32-bit single precision floating point dataflow rather than conventional 16-bit fixed point to recover signals with much lower Signal-Noise Ratio (SNR). Secondly, we introduce a novel Jacobi CORDIC eigenvalue decomposition (EVD) core using parallel pivot-seeking circuit and parallel 3-CORDIC design to improve speed significantly. Hermitian matrices of dimensions from 2 to 10 are tested to compare conventional 2-CORDIC EVD and proposed EVD. The proposed EVD effectively reduces on average 36% of processing time for mesh connection system and over 50% for parallel system.
Year
DOI
Venue
2015
10.1109/ISCAS.2015.7168793
International Symposium on Circuits and Systems
Keywords
Field
DocType
Multiband, multi-coset sampling, MUSIC, CORDIC, Jacobi, FPGA, sub-Nyquist, Reconstruction
Single-precision floating-point format,Computer science,Floating point,Signal-to-noise ratio,Sampling (signal processing),Electronic engineering,Gate array,CORDIC,Eigendecomposition of a matrix,Nyquist–Shannon sampling theorem
Conference
ISSN
Citations 
PageRank 
0271-4302
0
0.34
References 
Authors
5
6
Name
Order
Citations
PageRank
Hongxu Yin1133.76
Bah-Hwee Gwee224460.10
Zhiping Lin352.15
Achanna Anil Kumar4245.39
Sirajudeen Gulam Razul59614.41
Chong Meng Samson See617519.41