Digital-carrier multi-band user codes for baseband UWB multiple access

Author

Yang, Liuqing ; Giannakis, Georgios B.

Author_Institution

Dept. of ECE, Minnesota Univ., Minneapolis, MN, USA

fYear

2003

fDate

16-19 Nov. 2003

Firstpage

334

Lastpage

338

Abstract

The growing interest towards ultra-wideband (UWB) radios stems from their attractive features that include low-power low-complexity baseband operation, rich multipath diversity, and the potential of enhanced user capacity. Existing baseband spreading codes are not flexible in handling narrowband interference (NBI), which emerges when UWB radios overlay co-existing systems. In this paper, we introduce two novel spreading codes, for baseband UWB multiple access. Utilizing a single or multiple digital subcarriers (SC or MC), these codes give rise to multi-band UWB systems. In addition to providing flexibility in handling NBI, SC- and MC-UWB codes also enable full multipath diversity, and maximum coding gains. Equally attractive is their capability to reduce the number of interfering users, with simple matched filter operations.

Keywords

broadband networks; codes; diversity reception; matched filters; multi-access systems; radiofrequency interference; baseband UWB multiple access; coding gain; digital-carrier multiband user codes; matched filter; multipath diversity; multiple digital subcarriers; narrowband interference; single digital subcarriers; spreading codes; ultrawideband; Baseband; Channel coding; FCC; Frequency conversion; Global Positioning System; Interference; Narrowband; Transceivers; Ultra wideband technology; Wireless LAN;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultra Wideband Systems and Technologies, 2003 IEEE Conference on

Print_ISBN

0-7803-8187-4

Type

conf

DOI

10.1109/UWBST.2003.1267859

Filename

1267859