Iterative Detection and Decoding for TDMR With 2-D Intersymbol Interference Using the Four-Rectangular-Grain Model

2015 ◽  
Vol 51 (7) ◽  
pp. 1-12 ◽  
Author(s):  
Michael Carosino ◽  
Jiyang Yu ◽  
Yiming Chen ◽  
Morteza Mehrnoush ◽  
Benjamin J. Belzer ◽  
...  
Keyword(s):  
Intersymbol Interference ◽  
Iterative Detection ◽  
Iterative Detection And Decoding ◽  
Grain Model

scholarly journals Graph-Based Detection and LDPC Decoding over 2D Intersymbol Interference Channels

2021 ◽  
pp. 91-98
Author(s):  
Yingying Li ◽  
◽  
Zhiliang Qin ◽  
Lianghui Zou ◽  
Yu Qin ◽  
...  
Keyword(s):  
Intersymbol Interference ◽  
Iterative Detection ◽  
Interference Channels ◽  
Parity Check ◽  
Ldpc Decoder ◽  
Ldpc Decoding ◽  
Low Density Parity Check ◽  
Iterative Detection And Decoding ◽  
Check Node ◽  
Isi Channels

In this paper, we propose a fully graph-based iterative detection and decoding scheme for Low-Density Parity-Check (LDPC) coded generalized two-dimensional (2D) intersymbol interference (ISI) channels. The 2D detector consists of a downtrack detector based on the symbol-level sum-product algorithm (SPA) and a bit-level SPA-based crosstrack detector. A LDPC decoder based on simplified check node operations is also proposed to provide soft information for the 2D channel detector. Numerical results show that the proposed receiver achieves better performance as compared with the trellis-based BCJR detector over 2×2 2D channels while at a significantly lower computational complexity.

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