Results 221 to 230 of about 144,869 (263)

Improved SNR Estimation Algorithm

2017 International Conference on Computer Systems, Electronics and Control (ICCSEC), 2017
As for several NDA SNR estimation algorithm for QPSK signal, their SNR estimation performance is poor. This article puts forward an improved low complexity SNR estimation algorithm to improve the SNR estimation range and accuracy. The mean, bias and variance of the new algorithm are simulated.
Xu Qun, Zhou Jian
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SNR estimation for nonconstant modulus constellations

IEEE Transactions on Signal Processing, 2004
We propose a new technique to estimate the signal-to-noise ratio (SNR) over the flat-fading channel. This is a non-data-aided, envelope-based estimator that can be applied to non-constant modulus constellations which is a feature not found in the existing approaches.
null Ping Gao, C. Tepedelenlioglu
openaire   +1 more source

A reduced complexity SNR estimator

IET Conference Publications, 2009
This paper presents a novel reduced complexity SNR estimator, whose performances are comparable with the maximum-likelihood estimator while saving one half of the floating point multiplications and one third of the floating point sums. A detailed statistical description of the estimate, as well as simulation results, are provided. (4 pages)
CANDREVA, ENZO ALBERTO, CORAZZA, GIOVANNI EMANUELE, VANELLI CORALLI, ALESSANDRO   +2 more
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Turbo-decoding without SNR estimation

IEEE Communications Letters, 2000
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 turbo-codes and the design of good variance estimators have been addressed by several authors.
A. Worm, P. Hoeher, N. Wehn
openaire   +1 more source

Squared envelope-based SNR estimation

Journal of the Chinese Institute of Engineers, 2013
Two novel squared envelope (SQE)-based and nondata-aided (NDA) signal-to-noise ratio (SNR) estimators over slow fading channel are proposed, which are robust to carrier offsets and can be applied to both nonconstant modulus (NCM) and constant modulus (CM) constellations.
Miin-Jong Hao, Wei-Lun Tsai, Yu-Chi Tsai
openaire   +1 more source

SNR-Based Link Quality Estimation

2012 IEEE 75th Vehicular Technology Conference (VTC Spring), 2012
The ability to accurately estimate wireless link quality is critical to the performance of routing protocols and rate adaptation algorithms in wireless mesh networks. Current link quality estimation methods utilize the packet delivery ratio (PDR) measurement of periodic broadcast probes sent at the lowest transmission rate.
Wee Lum Tan, Peizhao Hu, Marius Portmann
openaire   +1 more source