Title :
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
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;
Conference_Titel :
Vehicular Technology Conference (VTC Fall), 2011 IEEE
Conference_Location :
San Francisco, CA
Print_ISBN :
978-1-4244-8328-0
DOI :
10.1109/VETECF.2011.6093120
