Title :
The PSD analysis of UWB time hopping impulse radio multi-user aggregate signals
Author :
Yue, Guangrong ; Li, Shaoqian ; Ge, Lijia
Author_Institution :
Nat.Key Lab. of Commun., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
This paper studies the power spectrum density (PSD) of ultra wideband (UWB) time hopping (TH) multi-user aggregate signals with asynchronous transmission and with synchronous transmission. TH codes under consideration are deterministic period code and random integer code. Two UWB modulations, TH pulse position modulation (PPM) and TH pulse amplitude modulation (PAM), are considered in this paper. The distribution of the time delay of UWB asynchronous transmission can dominate the PSD of aggregate signals. The main system parameters, which determine the PSD of UWB aggregate signals, are investigated in detail.
Keywords :
delay estimation; modulation coding; multiuser detection; pulse amplitude modulation; pulse position modulation; ultra wideband communication; PAM; PPM; PSD analysis; TH codes; UWB modulations; asynchronous transmission; deterministic period code; multi-user aggregate signals; power spectrum density; pulse amplitude modulation; pulse position modulation; random integer code; synchronous transmission; time delay; time hopping impulse radio; ultra wideband time hopping; Aggregates; Amplitude modulation; Bandwidth; Digital communication; Digital signal processing; Pulse modulation; Signal analysis; Spread spectrum communication; Ultra wideband technology; Wireless communication;
Conference_Titel :
Communications, Circuits and Systems, 2005. Proceedings. 2005 International Conference on
Print_ISBN :
0-7803-9015-6
DOI :
10.1109/ICCCAS.2005.1493445
