A Novel Ultrawideband System for Multiuser Data Communications

Author

Barbieri, Alessandro ; Pancaldi, Fabrizio ; Vitetta, Giorgio M.

Author_Institution

Dept. of Inf. Eng., Univ. of Modena & Reggio Emilia, Modena, Italy

Volume

10

Issue

12

fYear

2011

fDate

12/1/2011 12:00:00 AM

Firstpage

4324

Lastpage

4333

Abstract

In this paper, a novel ultrawideband system for multiuser data communications is proposed. In this system multiple users are allowed to transmit on-off keying modulated signals in the same time intervals and exploiting the same frequency subband. Time/frequency overlapped data frames sent by distinct users include low data rate training sequences characterized by different repetition periods. This transmission strategy, known as rate division multiple access in the technical literature, allows to ease two fundamental tasks at the receive side, namely joint channel estimation and timing synchronization. Channel estimates are exploited by a multiuser detector based on a zero forcing equalizer. Numerical results evidence that the proposed solution yields good error performance at the price of a limited complexity.

Keywords

amplitude shift keying; channel estimation; multi-access systems; multiuser detection; ultra wideband communication; joint channel estimation; multiuser data communication; multiuser detector; on-off keying modulated signal; rate division multiple access; time-frequency overlapped data frames; timing synchronization; transmission strategy; ultrawideband system; zero forcing equalizer; Channel estimation; Complexity theory; Data communication; Multiaccess communication; Payloads; Receivers; Synchronization; Ultra wideband communication; RDMA; UWB; multiuser detection;

fLanguage

English

Journal_Title

Wireless Communications, IEEE Transactions on

Publisher

ieee

ISSN

1536-1276

Type

jour

DOI

10.1109/TWC.2011.101711.110631

Filename

6059455