An approximate formula for WER of turbo-like codes and its application

Author

Liyun Dai ; Hongwen Yang

Author_Institution

Sch. of Inf. & Commun. Eng., Beijing Univ. of Posts & Telecommun., Beijing, China

fYear

2011

fDate

14-16 Oct. 2011

Firstpage

41

Lastpage

44

Abstract

By using radius of decision region, an approximate formula for word error rate (WER) of Turbo-like codes is presented in [1]. The approximate formula has a simple form of Gaussian Q-function with multiple arguments including the signal to noise ratio (SNR), the code length, and two parameters determined by the code structure and the decoding algorithm. This formula makes it possible to theoretically analyze the performance of turbo-like codes over fading channels. In this paper, we apply the formula to evaluate the WER of LDPC code over block fading channels. Simulation results show that the theoretical analysis matches well with the Monte Carlo simulation for both Rician and Nakagami-m fading channels.

Keywords

Gaussian channels; Monte Carlo methods; Nakagami channels; Rician channels; approximation theory; block codes; channel coding; decoding; parity check codes; turbo codes; Gaussian Q-function; LDPC code; Monte Carlo simulation; Nakagami-m block fading channel; Rician block fading channel; SNR; WER; approximate formula; decision radius region; decoding algorithm; signal to noise ratio; turbo-like code; word error rate; LDPC codes; Nakagami fading; Rician fading; block fading; radius of decision region; word error rate (WER);

fLanguage

English

Publisher

iet

Conference_Titel

Communication Technology and Application (ICCTA 2011), IET International Conference on

Conference_Location

Beijing

Type

conf

DOI

10.1049/cp.2011.0626

Filename

6192822