SNR mismatch and online estimation in turbo decoding

TA Summers, SG Wilson - IEEE transactions on …, 1998 - ieeexplore.ieee.org
Iterative decoding of turbo codes, as well as other concatenated coding schemes of similar
nature, requires knowledge of the signal-to-noise ratio (SNR) of the channel so that proper …

Turbo-decoding without SNR estimation

A Worm, P Hoeher, N Wehn - IEEE Communications Letters, 2000 - ieeexplore.ieee.org
Theoretically, it is necessary to estimate the SNR when using a MAP of the log-MAP
constituent decoder. The effect of an SNR mismatch on the bit error rate performance of …

Decoherence and quantum error correction for quantum computing and communications

JE Martinez - arxiv preprint arxiv:2202.08600, 2022 - arxiv.org
Quantum technologies have shown immeasurable potential to effectively solve several
information processing tasks such as prime number factorization, unstructured database …

Depolarizing channel mismatch and estimation protocols for quantum turbo codes

J Etxezarreta Martinez, PM Crespo, J Garcia-Frías - Entropy, 2019 - mdpi.com
Quantum turbo codes (QTC) have shown excellent error correction capabilities in the setting
of quantum communication, achieving a performance less than 1 dB away from their …

Effect of mismatched SNR on the performance of log-MAP turbo detector

MA Khalighi - IEEE transactions on vehicular technology, 2003 - ieeexplore.ieee.org
The effect of signal-to-noise ratio (SNR) mismatch on the bit error rate (BER) performance of
log-MAP turbo detector is studied. It is shown that the sensitivity to the mismatched SNR …

Closed-form CRLBs for SNR estimation from turbo-coded BPSK-, MSK-, and square-QAM-modulated signals

F Bellili, A Methenni, S Affes - IEEE transactions on signal …, 2014 - ieeexplore.ieee.org
In this contribution, we derive for the first time the closed-form expressions for the Cramér-
Rao lower bounds (CRLBs) of the signal-to-noise ratio (SNR) estimates from BPSK-, MSK …

DS-CDMA implementation with iterative multiple access interference cancellation

R Dodd, C Schlegel, V Gaudet - IEEE Transactions on Circuits …, 2012 - ieeexplore.ieee.org
In this paper an implementation of iterative joint detection for multiple access interference
using direct-sequence code-division multiple-access (DS-CDMA) is presented. Results for …

Joint synchronization and SNR estimation for turbo codes in AWGN channels

J Sun, MC Valenti - IEEE transactions on communications, 2005 - ieeexplore.ieee.org
Turbo codes are sensitive to both (timing) synchronization errors and signal-to-noise ratio
(SNR) mismatch. Since turbo codes are intended to work in environments with very low …

How to use a priori information of data symbols for SNR estimation

MA Dangl, J Lindner - IEEE Signal Processing Letters, 2006 - ieeexplore.ieee.org
We address the problem of how to use a priori information of data symbols to improve signal-
to-noise ratio (SNR) estimation. Digital transmission with binary phase-shift keying (BPSK) …

Turbo decoders which adapt to noise distribution mismatch

X Huang, N Phamdo - IEEE Communications Letters, 1998 - ieeexplore.ieee.org
This article investigates the sensitivity of turbo decoder performance to mismatch of the
noise distribution, and proposes a simple on-line procedure for estimating the unknown …