Title :
Finite-Resolution Digital Receiver for UWB TOA Estimation
Author :
Sun, Fei ; Yin, Huarui ; Wang, Weidong
Author_Institution :
Dept. of Electr. Eng. & Inf. Sci., USTC, Hefei, China
fDate :
1/1/2012 12:00:00 AM
Abstract :
In this paper, the effect of finite-resolution analog-to-digital converter (ADC) quantization on ultra-wideband (UWB) time of arrival (TOA) estimation is investigated. The deflection criterion is introduced for optimizing the nonuniform quantization. The training based TOA estimation algorithm using maximum likelihood (ML) rule is proposed. Compared with the full-resolution and energy-detection (ED) estimators via simulation, we demonstrate that our training based 3-level quantization scheme is satisfactory because it can approach a full-resolution estimator while decreasing the complexity greatly.
Keywords :
analogue-digital conversion; maximum likelihood estimation; quantisation (signal); time-of-arrival estimation; ultra wideband communication; ADC; ML; UWB TOA estimation; energy-detection estimators; finite-resolution analog-to-digital converter quantization; finite-resolution digital receiver; full-resolution estimator; maximum likelihood; training based 3-level quantization scheme; ultra-wideband; Complexity theory; Maximum likelihood estimation; Quantization; Receivers; Signal to noise ratio; Time of arrival estimation; Training; IR-UWB; TOA; finite-resolution; quantization;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2011.111611.112074
