Title :
A performance analysis of DS-CDMA and SCPC VSAT networks
Author :
Hayes, David P. ; Ha, T.T.
Author_Institution :
Anal. Sci. Corp., Reston, VA, USA
fDate :
1/1/1990 12:00:00 AM
Abstract :
Spread-spectrum and single-channel-per-carrier (SCPC) transmission techniques work well in very small aperture terminal (VSAT) networks for multiple-access purposes while allowing the Earth station antennas to remain small. Direct-sequence code-division multiple-access (DS-CDMA) is the simplest spread-spectrum technique to use in a VSAT network since a frequency synthesizer is not required for each terminal. An examination is made of the DS-CDMA and SCPC Ku-band VSAT satellite systems for low-density (64-kb/s or less) communications. A method for improving the standard link analysis of DS-CDMA satellite-switched networks by including certain losses is developed. The performance of 50-channel full mesh and star network architectures is analyzed. The selection of operating conditions producing optimum performance is demonstrated
Keywords :
code division multiple access; microwave links; satellite relay systems; spread spectrum communication; DS-CDMA; Earth station antennas; Ku-band; SCPC; VSAT satellite systems; direct sequence code division multiple access network; full mesh network; losses; low density communications; performance analysis; satellite-switched networks; single channel per carrier technique; spread-spectrum technique; standard link analysis; star network architectures; very small aperture terminal network; Apertures; Artificial satellites; Direct-sequence code-division multiple access; Multiaccess communication; Performance analysis; Receiving antennas; Satellite antennas; Satellite ground stations; Spread spectrum communication; Transmitting antennas;
Journal_Title :
Aerospace and Electronic Systems, IEEE Transactions on
