NHZ-TH sequences for quasi-synchronous UWB systems

Author

Zhang, Z. ; Zeng, F. ; Ge, L. ; Liu, Q.

Author_Institution

Chongqing Commun. Inst.

fYear

2005

fDate

15-17 Nov. 2005

Lastpage

5

Abstract

In this paper, we propose a novel set of time-hopping (TH) sequences with no-hit zone (NHZ) suitable for quasi-synchronous time-hopping spread spectrum ultra wideband (QS-THSS-UWB) systems. Different from the existing NHZ-TH sequences, the constructed NHZ-TH sequences not only have good TH auto-correlation and cross-correlation properties in the range of NHZ, but also have large ratio of the number of sequence elements to the number of time slots. As a result, the QS-THSS-UWB systems employing such NHZ-TH sequences can be without multiple-access interference (MAI) as long as the shifts between sequences don´t exceed the NHZ, while the ability of anti-detection and anti-interception of systems will be improved greatly. We provide the construction algorithm of such NHZ-TH sequences and analyze its TH correlation properties. Also, the performance comparison between the proposed NHZ-TH sequences in this paper and the existing NHZ-TH sequences is presented

Keywords

multi-access systems; radiofrequency interference; spread spectrum communication; ultra wideband communication; MAI; anti-detection; anti-interception; auto-correlation; cross-correlation; multiple-access interference; no-hit zone time-hopping sequences; quasi-synchronous UWB systems; spread spectrum ultra wideband;

fLanguage

English

Publisher

ieee

Conference_Titel

Mobile Technology, Applications and Systems, 2005 2nd International Conference on

Conference_Location

Guangzhou

Print_ISBN

981-05-4573-8

Type

conf

DOI

10.1109/MTAS.2005.243884

Filename

1656815