A Blind Channel Estimation Technique for TH-PPM UWB Systems

Author

Alizad, A.R. ; Alipanahi, B. ; Ghasemi, A. ; Shiva, M. ; Jamali, S.H. ; Nader-Esfahani, S.

Author_Institution

School of Electrical and Computer Engineering, University of Tehran, Email: aarahvar@ut.ac.ir

Volume

10

fYear

2006

fDate

38869

Firstpage

4717

Lastpage

4722

Abstract

As the UWB systems are designed to operate in environments having dense multipath characteristics (i.e., indoor environments) the channel estimation task is much more involved than the conventional systems. In this paper, we present a new blind channel estimation technique for Time-Hopping Pluse-Position-Modulation (TH-PPM) systems. Our proposed method is based on the Pulse Compression (PC) technique introduced in [1]. In spite of its low complexity, the proposed blind channel estimation method outperforms the Non-Data Aided Maximum Likelihood (NDA-ML) technique. Our simulation results show the promising gain of 4 dB around the Bit Error Rate (BER) of 10-3, compared to NDA-ML. The performance loss, compared to the Perfect Channel Knowledge (PCK) is only 1.5 dB at this BER.

Keywords

Bit error rate; Blind equalizers; Channel estimation; Fading; Finite impulse response filter; Indoor environments; Matrix decomposition; Maximum likelihood estimation; Pulse compression methods; Pulse modulation; TH-PPM; UWB; blind; channel estimation;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, 2006. ICC '06. IEEE International Conference on

Conference_Location

Istanbul

ISSN

8164-9547

Print_ISBN

1-4244-0355-3

Electronic_ISBN

8164-9547

Type

conf

DOI

10.1109/ICC.2006.255385

Filename

4024783