Title :
Optimizing the transmit energy in UWB multiple access communications in multipath fading channels
Author :
Kannan, B. ; Yao Ma ; Chin, F.
Author_Institution :
Center for Wireless Commun., Nat. Univ. of Singapore, Singapore
Abstract :
We propose a new transmit energy optimization method in UWB (ultra wideband) multiple access communications in multipath fading channels. We consider a packetized transmission mode, where each packet contains N/sub pre/ overhead symbols for synchronization purpose and N/sub B/ symbols for data transmission. The effect of packet update rate (N/sub R/), decimation factor (D), number of users (K/sub all/) and the length of PN-sequence (N/sub s/) on the transmitted energy are analyzed. Extensive numerical results are presented to show how these parameters can be chosen to obtain an optimum transmit energy for a given probability of acquisition.
Keywords :
fading channels; multipath channels; optimisation; probability; pulse position modulation; signal detection; spread spectrum communication; PN-sequence; UWB multiple access communications; data transmission; decimation factor; fading channels; multipath channels; overhead symbols; packet update rate; pulse-position-modulation; signal acquisition probability; synchronization; time-hopping spread-spectrum; transmit energy optimization; ultra wideband multiple access communications; wireless channels; AWGN channels; Educational institutions; Fading; Niobium; Optimization methods; Power engineering and energy; Signal to noise ratio; Spread spectrum communication; Transceivers; Wireless communication;
Conference_Titel :
Ultra Wideband Systems and Technologies, 2002. Digest of Papers. 2002 IEEE Conference on
Conference_Location :
Baltimore, MD, USA
Print_ISBN :
0-7803-7496-7
DOI :
10.1109/UWBST.2002.1006330
