Multiple subcarrier modulation for infrared wireless systems using punctured convolutional codes and variable amplitude block codes

2003 ◽  
Author(s):  
H. Yamaguchi ◽  
T. Ohtsuki ◽  
L. Sasase
Keyword(s):  
Wireless Systems ◽  
Convolutional Codes ◽  
Block Codes ◽  
Variable Amplitude ◽  
Punctured Convolutional Codes

scholarly journals Turbo Equalization Of Nonlinear ISI-channels Using High Rate FEC Codes

2005 ◽  
Vol 3 ◽  
pp. 259-263
Author(s):  
M. Siegrist ◽  
T. Schorr ◽  
A. Dittrich ◽  
W. Sauer-Greff ◽  
R. Urbansky
Keyword(s):  
Data Transmission ◽  
Signal To Noise Ratio ◽  
Convolutional Codes ◽  
Turbo Equalization ◽  
Block Codes ◽  
High Rate ◽  
Turbo Decoding ◽  
Nonlinear Channels ◽  
Punctured Convolutional Codes ◽  
Isi Channels

Abstract. Turbo equalization is a widely known method to cope with low signal to noise ratio (SNR) channels corrupted by linear intersymbol interference (ISI) (Berrou and Galvieux, 1993; Hagenauer et al., 1997). Recently in this workshop it was reported that also for nonlinear channels a remarkable turbo decoding gain can be achieved (Siegrist et al., 2001). However, the classical turbo equalization relies on code rates at 1/3 up to 1/2 which makes it quite unattractive for high rate data transmission. Considering the potential of iterative equalization and decoding, we obtain a considerable turbo decoding gain also for high rate codes of less than 7% redundancy by using punctured convolutional codes and block codes.

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