Name
Title | ||
|---|---|---|
Maximum likelihood scale parameter estimation: An application to gain estimation for QAM constellations |
Abstract | ||
|---|---|---|
In this paper we address the problem of scale parameter estimation, introducing a reduced complexity Maximum Likelihood (ML) estimation procedure. The estimator stems from the observation that, when the estimandum acts as a shift parameter on a multinomially distributed statistic, direct maximization of the likelihood function can be conducted by an efficient DFT based procedure. A suitable exponential warping of the observation's domain is known to transform a scale parameter problem into a shift estimation problem, thus allowing the afore mentioned reduced complexity ML estimation for shift parameter to be applied also in scale parameter estimation problems. As a case study, we analyze a gain estimator for general QAM constellations. Simulation results and theoretical performance analysis show that the herein presented estimator outperforms selected state of the art high order moments estimator, approaching the Cramér-Rao Lower Bound (CRLB) for a wide range of SNR. |
Year | Venue | Keywords |
|---|---|---|
2010 | Aalborg | discrete fourier transforms,maximum likelihood estimation,quadrature amplitude modulation,crlb,cramér-rao lower bound,dft based procedure efficiency,ml estimation procedure,qam constellations,snr,complexity reduction,direct maximization,estimandum,exponential warping,gain estimation,high order moment estimator,likelihood function,maximum likelihood estimation procedure,multinomially distributed statistic,scale parameter estimation,shift parameter estimation problem,signal to noise ratio |
Field | DocType | ISSN |
Cramér–Rao bound,Mathematical optimization,Likelihood function,Upper and lower bounds,Minimum chi-square estimation,Algorithm,Estimation theory,Maximum likelihood sequence estimation,Mathematics,Scale parameter,Estimator | Conference | 2219-5491 |
Citations | PageRank | References |
0 | 0.34 | 7 |
Authors | ||
3 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Stefania Colonnese | 1 | 137 | 26.43 |
| Stefano Rinauro | 2 | 50 | 8.72 |
| Gaetano Scarano | 3 | 209 | 31.32 |