|
Title:
|
Performance of trellis-coded 8-DPSK modulation with co-channel interference in land mobile radio channels
|
|
Author:
|
Femenias Nadal, Guillem; Agustí Comes, Ramon
|
|
Other authors:
|
Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions; Universitat Politècnica de Catalunya. GRCM - Grup de Recerca en Comunicacions Mòbils |
|
Abstract:
|
The BER (bit error rate) performance of uncoded 4-DPSK (differential phase shift keying) and coded 8-DPSK (with 8 and 16 state codes) modulation schemes have been studied. A Rayleigh mobile channel and the presence of co-channel interferers have been assumed. BER calculations have been performed by means of computer simulation. In this simulation a Nyquist signaling and an ideal block interleaving process are assumed. Decoding of trellis codes with 8 and 16 states is performed by a soft Viterbi decoder. Results obtained for the uncoded 4-DPSK modulation scheme are considered as reference to determine the improvements introduced by the coding process. Remarkable coding gains can be attained for carrier to interference average power ratios greater than 20 dB. No significant improvements of the BER-performance seem to be obtained by increasing the number of states in the Ungerboeck codes |
|
Abstract:
|
Peer Reviewed |
|
Subject(s):
|
-Àrees temàtiques de la UPC::Enginyeria de la telecomunicació
-Mobile communication systems
-Interference (signal)
-Mobile radio systems
-Comunicacions mòbils, Sistemes de |
|
Rights:
|
|
|
Document type:
|
Article - Published version
Conference Object |
|
Published by:
|
Institute of Electrical and Electronics Engineers (IEEE)
|
|
Share:
|
|
