Title :
A new pulse compression scheme applied to spread ALOHA in VSAT networks
Author :
Wang, Wei-chun ; Scholtz, Robert A.
Author_Institution :
Commun. Sci. Inst., Univ. of Southern California, Los Angeles, CA, USA
Abstract :
A new pulse compression scheme using inverse filters and sidelobe-optimal sequences is proposed. Comparisons are made between the proposed scheme and the conventional matched filter approach. The new scheme is shown to provide very sharp sidelobe reduction capability without increasing the transmission bandwidth, vis-a-vis the conventional scheme. The performances of the two filtering schemes, embedded in a spread ALOHA communication system in a very small aperture terminal (VSAT) data network, are calculated and compared. The inverse filter scheme in many situations has fewer detection errors then does the conventional matched filter scheme with the same bit-energy to thermal-noise ratio
Keywords :
data communication systems; data compression; filtering and prediction theory; matched filters; multi-access systems; protocols; satellite ground stations; spread spectrum communication; telecommunication networks; VSAT networks; bit-energy to thermal-noise ratio; data network; detection errors; inverse filters; matched filter; pulse compression; sidelobe reduction; sidelobe-optimal sequences; spread ALOHA communication system; transmission bandwidth; very small aperture terminal; AWGN; Additive white noise; Apertures; Bandwidth; Filtering; Finite impulse response filter; IIR filters; Intelligent networks; Matched filters; Pulse compression methods; Pulse modulation;
Conference_Titel :
Signals, Systems and Computers, 1993. 1993 Conference Record of The Twenty-Seventh Asilomar Conference on
Conference_Location :
Pacific Grove, CA
Print_ISBN :
0-8186-4120-7
DOI :
10.1109/ACSSC.1993.342435
