Title :
Code selection to eliminate interchannel interference in a multi-user OFDM satellite system
Author_Institution :
Dept. of Electr. & Comput. Eng., Texas Univ., El Paso, TX, USA
fDate :
Oct. 29 2000-Nov. 1 2000
Abstract :
Orthogonal frequency division multiplexing has been proposed as a modulation format for a multi-user satellite communications system. The main problem with this scheme is that all transmitters operate independently. Thus, prior to timing acquisition, the transmitters are not time aligned and significant interchannel interference results. This paper derives a method for transmitters to code their outputs during acquisition such that interchannel interference is eliminated, independent of frequency separation and timing error.
Keywords :
OFDM modulation; adjacent channel interference; codes; interference suppression; multiuser channels; satellite communication; code selection; frequency separation; interchannel interference elimination; modulation format; multi-user OFDM satellite system; multi-user satellite communications system; orthogonal frequency division multiplexing; timing acquisition; timing error; transmitters; Differential quadrature phase shift keying; Frequency conversion; Interchannel interference; Interference elimination; OFDM; Phase modulation; Phase shift keying; Satellites; Timing; Transmitters;
Conference_Titel :
Signals, Systems and Computers, 2000. Conference Record of the Thirty-Fourth Asilomar Conference on
Conference_Location :
Pacific Grove, CA, USA
Print_ISBN :
0-7803-6514-3
DOI :
10.1109/ACSSC.2000.910931
