Title
A Low-Complexity Hardware Implementation of Compressed Sensing-Based Channel Estimation for ISDB-T System.
Abstract
Compressed sensing (CS) is one of the hottest research topics in the sparse signal reconstruction problem. But CS implementation has a drawback of high computational complexity due to calculation between large size of matrices. In this paper, we will propose a low-complexity CS hardware realization for channel estimation in the integrated services digital broadcasting-terrestrial (ISDB-T) system using several optimization methods to reduce the implementation complexity of CS usage. Since the ISDB-T is based on orthogonal frequency division and multiplexing system, the measurement matrix of CS computation is a truncated discrete Fourier transform (DFT) matrix. We can exploit the symmetrical property of this DFT matrix to significantly reduce its multiplication complexity and random access memory usage. To achieve fast reconstruction period, this paper also provides a hardware architecture for the proposed method and its realization in field programmable gate array. The simulation results show that the proposed methods can achieve lower complexity CS-based channel estimation with almost the identical system performance with the conventional method. Moreover, the realized hardware can achieve the fastest execution time compare to that of other existing methods.
Year
DOI
Venue
2017
10.1109/TBC.2016.2617286
TBC
Keywords
Field
DocType
Matching pursuit algorithms,Multiplexing,Digital multimedia broadcasting,Data communication,Communication standards,Hardware,Channel estimation
Telecommunications,Computer science,Field-programmable gate array,Electronic engineering,Discrete Fourier transform,Computer hardware,Multiplexing,Compressed sensing,Random access,DFT matrix,Computational complexity theory,Hardware architecture
Journal
Volume
Issue
ISSN
63
1
0018-9316
Citations 
PageRank 
References 
0
0.34
17
Authors
3
Name
Order
Citations
PageRank
Rian Ferdian100.68
Yafei Hou21211.89
Minoru Okada325058.32