Data detection for cooperative vehicular communication systems with unknown channels

Author

He, Lanlan ; Ma, Shaodan ; Wu, Yik-Chung ; Ng, Tung-Sang

Author_Institution

Dept. of Electr. & Electron. Eng., Univ. of Hong Kong, Hong Kong, China

fYear

2010

fDate

12-15 Dec. 2010

Firstpage

359

Lastpage

362

Abstract

In this paper, data detection for an OFDM-based amplify-and-forward (AF) cooperative vehicular communication system with multiple relays is investigated. Unlike the conventional OFDM AF cooperative systems, the underlying channels experience fast time-variation due to high mobility of the source and destination. To enable data detection, the system model is first reformulated using the generalized complex exponential basis expansion model (GCE-BEM). Then a channel estimator is developed using the Tikhonov regularization method and a data detection method is proposed based on the linear minimum mean square error (LMMSE) criterion. The effectiveness of the proposed data detection algorithm is finally corroborated by computer simulations.

Keywords

OFDM modulation; cooperative communication; mean square error methods; telecommunication channels; vehicular ad hoc networks; OFDM AF cooperative systems; OFDM-based amplify-and-forward; Tikhonov regularization method; channel estimator; computer simulations; cooperative vehicular communication systems; data detection; generalized complex exponential basis expansion model; linear minimum mean square error; unknown channels; Niobium; Amplify-and-forward (AF); Cooperative vehicular communication; Orthogonal frequency division multiplexing (OFDM); Time-varying channel;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronics, Circuits, and Systems (ICECS), 2010 17th IEEE International Conference on

Conference_Location

Athens

Print_ISBN

978-1-4244-8155-2

Type

conf

DOI

10.1109/ICECS.2010.5724527

Filename

5724527