Evaluating Word Error Rate via Radius of Decision Region

Author

Dai, Liyun ; Yang, Hongwen

Author_Institution

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

fYear

2011

fDate

5-8 Sept. 2011

Firstpage

1

Lastpage

4

Abstract

In [1], it is shown that the word error rate (WER) of binary codes under binary phase-shift keying (BPSK) modulation can be evaluated via the square radius distribution of decision region and a simple approximation formula of WER for turbo-like codes is presented. In this paper, we extend the method in [1] to more general cases including high-order modulations and fading channels. Moreover, an improved closed-form approximate WER formula is also proposed which can reduce the approximation error to 0.05 dB under a BPSK modulation and additive white Gaussian noise (AWGN) channel for the signal-to-noise ratio (SNR) of interesting in wireless systems.

Keywords

AWGN channels; binary codes; error correction codes; error statistics; fading channels; phase shift keying; BPSK modulation; additive white Gaussian noise channel; binary code; binary phase-shift keying modulation; closed-form approximate WER formula; decision region; fading channel; high-order modulation; radius of decision region; signal-to-noise ratio; square radius distribution; turbo like code; wireless system; word error rate evaluation; Approximation methods; Binary phase shift keying; Decoding; Monte Carlo methods; Parity check codes; Signal to noise ratio;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference (VTC Fall), 2011 IEEE

Conference_Location

San Francisco, CA

ISSN

1090-3038

Print_ISBN

978-1-4244-8328-0

Type

conf

DOI

10.1109/VETECF.2011.6093120

Filename

6093120