Effect of precoding on the convergence of turbo equalization for partial response channels

2002 ◽  
Author(s):  
K.R. Narayanan
Keyword(s):  
Partial Response ◽  
Turbo Equalization ◽  
Partial Response Channels

scholarly journals Quantized Turbo Equalization for Non-binary LDPC Coded Partial-Response Channels

2021 ◽  
pp. 13-17
Author(s):  
Nina Zhang ◽  
◽  
Zhiliang Qin ◽  
Yingying Li ◽  
Luyan Xing ◽  
...  
Keyword(s):  
Partial Response ◽  
Transition Probabilities ◽  
Detection Algorithm ◽  
Turbo Equalization ◽  
Bit Patterned Media ◽  
Channel Detection ◽  
Partial Response Channels ◽  
Turbo Equalizer ◽  
Iterative Detection And Decoding ◽  
Channel Transition

In this paper, we consider iterative detection and decoding (i.e., turbo equalization) for nonbinary low-density parity-check (LDPC) coded partial-response channels, where a quantizer is present to discretize the continuous received signal. We propose a turbo equalizer that uses the pre-computed quantized channel transition probabilities in the symbol-level BCJR channel detection algorithm, which significantly reduces the computational complexity by avoiding real-time floating-point multiplications. The proposed approach is further extended to nonbinary LDPC coded bit-patterned media recording (BPMR) channels. Simulation results show that with a small number of quantization bits, the proposed receiver approaches closely the performance of the conventional turbo equalizer operating on unquantized signals.

Noise-predictive turbo equalization for partial-response channels

2005 ◽  
Vol 41 (10) ◽  
pp. 2959-2961 ◽  
Author(s):  
S. Aviran ◽  
P.H. Siegel ◽  
J.K. Wolf
Keyword(s):  
Partial Response ◽  
Turbo Equalization ◽  
Partial Response Channels

Maximum likelihood decoding of RLL-FEC array codes on partial response channels

1993 ◽  
Vol 29 (16) ◽  
pp. 1406 ◽  
Author(s):  
G.S. Markarian ◽  
M. Naderi ◽  
B. Honary ◽  
A. Popplewell ◽  
J.J. O'Reilly
Keyword(s):  
Maximum Likelihood ◽  
Partial Response ◽  
Maximum Likelihood Decoding ◽  
Partial Response Channels ◽  
Array Codes
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