Title :
Codes of binary length for LEO/MEO CDMA systems
Author :
Cercas, F.A.B. ; Tomlinson, M. ; Albuquerque, A.A.
Author_Institution :
Inst. Superior Tecnico, DEEC, Lisbon, Portugal
Abstract :
In LEO/MEO systems there can be significant interference between overlapping spot beams from several satellites. New codes are proposed which are interference resistant and attractive in this application. These codes, named TCH codes, are of binary length, possess near optimum cross-correlation properties and have significant advantages from the implementation point of view. The derivation of these codes is explained. Their potentialities for use in CDMA are also presented and the error rate performance is compared with other schemes in a typical LEO/MEO system application
Keywords :
block codes; code division multiple access; correlation theory; cyclic codes; error statistics; interference suppression; polynomials; satellite communication; LEO/MEO CDMA systems; TCH codes; binary length codes; crosscorrelation; error rate performance; implementation; interference resistant codes; Bit error rate; Doppler effect; Error analysis; Fading; Fast Fourier transforms; Interference; Low earth orbit satellites; Maximum likelihood decoding; Multiaccess communication; Optical reflection;
Conference_Titel :
Universal Personal Communications, 1993. Personal Communications: Gateway to the 21st Century. Conference Record., 2nd International Conference on
Conference_Location :
Ottawa, Ont.
Print_ISBN :
0-7803-1396-8
DOI :
10.1109/ICUPC.1993.528404
