Title :
Antenna diversity, coding and interleaving technologies for low Earth orbit satellite hand-held terminals
Author :
Choy, Faith ; Cherniakov, M.
Author_Institution :
Dept. of Comput. Sci. & Electr. Eng., Queensland Univ. Qld., Australia
Abstract :
A handset for a Low Earth Orbit Satellite (LEOS) system is a new type of terminal. In comparison with terrestrial communication systems, LEOS link budget is essentially limited due to the distance between satellites and handsets. This can be partly compensated by utilizing two-element antenna diversity systems at handsets. Antenna diversity systems utilized with and without the coding and interleaving were compared. Correlation between signals received from each antenna element affects the performance of a diversity system. Correlation between signals at a time interval and the adjacent time interval also influences the effectiveness of coding and interleaving, and these are covered in this paper
Keywords :
Rayleigh channels; Viterbi decoding; channel coding; convolutional codes; diversity reception; interleaved codes; mobile satellite communication; multipath channels; quadrature phase shift keying; telecommunication terminals; time division multiple access; Iridium like terminals; LEOS system handset; QPSK; Rayleigh fading; TDMA system simulation; Viterbi decoder; antenna diversity; channel coding; coding technology; convolutional encoding; correlation between signals; diversity system performance; equal gain combining; hand-held terminals; interleaving technology; low Earth orbit satellite; multipath fading; statistical channel model; time diversity; Diversity reception; Fading; Frequency; Interleaved codes; Lasers and Electro-Optics Society; Low earth orbit satellites; Receiving antennas; Satellite antennas; Telephone sets; Transmitters;
Conference_Titel :
Microwave Conference, 1999 Asia Pacific
Print_ISBN :
0-7803-5761-2
DOI :
10.1109/APMC.1999.833701
