© The Institution of Electrical Engineers
The letter describes a cheap and reliable solution, using acousticsurface-wave delay lines, for the differential demodulation of phase-shift-keyed digital signals at low digital rates (up to 20 Mbit/s). Results on 4-phase p.s.k. differential demodulators operating at 2.048 Mbit/s are reported in terms of bit error rate against energy per bit/noise spectral density ratio. In addition, using the same technology, a new multidifferential demodulator has been implemented. Owing to multiple differential demodulations carried out on the same signal, a significant improvement in both theoretical and experimental bit error rate is obtained.
References
-
-
1)
-
Lombard, D, Imbeaux, J.C.: `Multidifferential PSK-demodulation for TDMA transmission', Preceedings of satellite communication systems technology, April 1975, London, p. 207–213.
-
2)
-
Imbeaux, J.C., Lombard, D.: `Démodulation multidifférentielle d'une porteuse MDP 4', Colloque national sur le traitement du signal, GRETSI, 1975, Nice, p. 315–321.
-
3)
-
W.C. Lindsey ,
M.K Simon
.
(1973)
Telecommunication systems engineering.
http://iet.metastore.ingenta.com/content/journals/10.1049/el_19770418
Related content
content/journals/10.1049/el_19770418
pub_keyword,iet_inspecKeyword,pub_concept
6
6