scholarly journals Lower Computation and Storage Complexity of QC-LDPC Codes in Rayleigh Fading Channel

2009 ◽  
pp. 110-113
Author(s):  
Abid Yahya ◽  
Othman Sidek ◽  
M. F. M. Salleh ◽  
Farid Ghani
Keyword(s):  
Fading Channel ◽  
Rayleigh Fading ◽  
Ldpc Codes ◽  
Rayleigh Fading Channel ◽  
Storage Complexity ◽  
And Storage

scholarly journals Research on LDPC in an OFDM System

2021 ◽  
Vol 2078 (1) ◽  
pp. 012075
Author(s):  
Chong-Yue Shi ◽  
Hui Li ◽  
You-Ling zhou ◽  
Ping Wang ◽  
Qian Li ◽  
...  
Keyword(s):  
Fading Channel ◽  
Rayleigh Fading ◽  
Simulation Analysis ◽  
Ldpc Codes ◽  
Ldpc Code ◽  
Rayleigh Fading Channel ◽  
Code Length ◽  
Ofdm System ◽  
Number Of Iterations ◽  
Better Than

Abstract In this paper, LDPC codes and OFDM technologies are studied, and combines LDPC and OFDM to simulate and verify the performance. The encoding of LDPC and logarithmic domain BP decoding algorithm and the principle of OFDM are introduced. Through MATLAB, the simulation of OFDM-LDPC system in different channel, different code length, different iteration times, LDPC and OFDM-LDPC in the same conditions are compared. Through simulation analysis, we can know that the performance of OFDM-LDPC system will improve with the increase of the code length. When the SNR is small, the number of iterations has little effect on the performance of OFDM-LDPC system. When the SNR is large, the performance of the system will be improved with the increase of the number of iterations. The performance of OFDM-LDPC codes is better than that of LDPC codes. The performance of OFDM-LDPC code is better than LDPC code in multipath Rayleigh fading channel.

SoS models for Rayleigh fading channel

2014 ◽  
Author(s):  
Y.H. Ding ◽  
R.J. Tian ◽  
J.S. Tao ◽  
X.R. Ma ◽  
X.C. Wang ◽  
...  
Keyword(s):  
Fading Channel ◽  
Rayleigh Fading ◽  
Rayleigh Fading Channel

Combining Modulation Diversity and Index Assignment to Improve Image VQ for a Rayleigh Fading Channel

2016 ◽  
Author(s):  
Waslon Terllizzie A. Lopes ◽  
Francisco Madeiro ◽  
Benedito G. Aguiar Neto ◽  
Marcelo S. Alencar
Keyword(s):  
Fading Channel ◽  
Rayleigh Fading ◽  
Rayleigh Fading Channel ◽  
Index Assignment ◽  
Modulation Diversity

Dual FH/MFSK system over a Rayleigh fading channel

1996 ◽  
Vol 32 (20) ◽  
pp. 1852 ◽  
Author(s):  
Chanbun Park ◽  
Jae Hong Lee
Keyword(s):  
Fading Channel ◽  
Rayleigh Fading ◽  
Rayleigh Fading Channel
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