Search. Read. Cite.

Easy to search. Easy to read. Easy to cite with credible sources.

Research Article
Time Domain DS-UWB Channel Estimation using Maximum Likelihood Algorithm

Zhendong Yin, Zhenguo Shi, Guowei Qi and Yi Zhou

Information Technology Journal, 2011, 10(1), 127-133.


This study proposed a direct sequence ultra-wideband (DS-UWB) channel estimation method using Maximum Likelihood algorithm for the indoor dense multi-path UWB channel of preamble structure suggested in the proposal of IEEE P802.15.TG3a. The Normalized Mean Square Channel Estimation Error (NMSCEE) is employed to measure the performance of the estimation method. The effect of the estimation performance influenced by different assisted-pilot numbers and the different Gaussian waveforms as UWB monocycle is discussed in different SNR conditions. Due to Federal Communications Commission (FCC)’s limits, the order of the derivative Gaussian pulse should be 5 of more. The simulation results show that the estimation algorithm can achieve satisfying performance with 60 as the pilot number. And when the pilot number is less than 50, the fifth order Gaussian pulse is the best choice. If the pilot number is more than 50, the ninth order Gaussian pulse is suitable. The results can be as the references and the basis for the practical UWB system.

ASCI-ID: 28-1164

Cited References Fulltext

Related Articles

Performance Analysis of UWB Channels for Wireless Personal Area Networks

Information Technology Journal, 2006, 5(2), 336-341.

Review on Selected Channel Estimation Algorithms for Orthogonal Frequency Division Multiplexing System

Information Technology Journal, 2011, 10(5), 914-926.

Investigation of Optimal Power Allocation for Pilot and Data in Direct-detection Optical OFDM System

Information Technology Journal, 2012, 11(9), 1304-1309.

Sparse Underwater Acoustic Channel Estimation Based on Compressive Sensing

Information Technology Journal, 2013, 12(5), 1040-1044.

A New Channel Estimation Method Based on Per-path Interference Cancellation for Cdma Downlink System

Information Technology Journal, 2013, 12(20), 5636-5640.

CFO Compensation Scheme via Lattice Reduction Algorithm for Uplink MC-CDMA

Information Technology Journal, 2014, 13(17), 2690-2696.

A New Steiner Channel Estimation Method in MIMO OFDM Systems

Information Technology Journal, 2007, 6(8), 1238-1244.

Design of Unmanned Aerial Vehicle Space Communication Links based on DS-UWB

Information Technology Journal, 2010, 9(8), 1713-1718.

Interference Analysis of Multi-user DS-UWB Signals on Unified S-band TT and C Systems

Information Technology Journal, 2013, 12(11), 2261-2264.

A Low-density Parity-check Codes LDPC based Hybrid Multiuser Detection Method for DS-UWB System

Information Technology Journal, 2013, 12(11), 2225-2230.

Cited By

Solving Project Scheduling Problems using Estimation of Distribution Algorithm with Local Simplex Search

Information Technology Journal, 2011, 10(7), 1374. DOI: 10.3923/itj.2011.1374.1380