Title :
Correlation properties of time-hopping sequences for impulse radio
Author :
Zhang, Zhenyu ; Zeng, Fanxin ; Ge, Lijia
Author_Institution :
Graduate Sch., Chongqing Commun. Inst., China
Abstract :
Time-hopping (TH) techniques have received increasing attention, as ultra wide band (UWB) impulse radio (IR) is proposed. The correlation properties of TH sequences have an important effect on the performance of IR communication system. This paper analyses the correlation properties of TH sequences. The definition of the correlation function of TH sequences is given. The upper and lower limits of correlation value of time-hopping sequences are obtained. Finally, the way to improve the correlation property of TH sequences is obtained. By this means, the maximum correlation value of TH sequences is decreased to half of original value.
Keywords :
binary sequences; broadband networks; correlation methods; multi-access systems; spread spectrum communication; SSMA; TH sequences; UWB impulse radio; maximum correlation value; performance; spread spectrum multiple access; time-hopping sequences; ultra wide band impulse radio; Delay effects; Digital communication; Digital signal processing; Equations; Frequency; Interference; Modulation; Pulse generation; Signal generators; Spread spectrum communication;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 2003. Proceedings. (ICASSP '03). 2003 IEEE International Conference on
Print_ISBN :
0-7803-7663-3
DOI :
10.1109/ICASSP.2003.1202570
