Performance of concatenated trellis-coded 16QAM with pilot symbol aided technique in the presence of fading

Author

Tsie, K.Y. ; Aghvami, A.H.

Author_Institution

King´´s Coll., London Univ., UK

fYear

1993

fDate

2-4 Nov 1993

Firstpage

352

Lastpage

356

Abstract

The performance of a concatenated trellis-coded 16QAM modem is presented for Rayleigh, Rician and shadowed land mobile satellite communication channels. For the concatenated coded modulation scheme, the outer code is a rate of 223/255 Reed-Solomon code and the inner code is a rate of 3/4, 8-state trellis-coded modulation (TCM). Time-multiplexed TCM codecs are used for interleaving and a pilot symbol aided method is used to provide amplitude and phase references to the receiver, in order that coherent detection can be employed. Error performance is compared with TCM 16QAM and uncoded 8PSK systems. In addition to data transmission, the system performance for digital speech transmission is also evaluated by taking into account of decoding delay and interleaving

Keywords

Reed-Solomon codes; amplitude modulation; codecs; decoding; fading; modems; telecommunication channels; trellis codes; 8-state trellis-coded modulation; Rayleigh channel; Reed-Solomon code; Rician channel; coherent detection; concatenated coded modulation; concatenated trellis-coded 16QAM modem; data transmission; decoding delay; digital speech transmission; fading; inner code; interleaving; outer code; phase references; pilot symbol aided technique; shadowed land mobile satellite communication channels; system performance; time multiplexed TCM codecs; uncoded 8PSK systems;

fLanguage

English

Publisher

iet

Conference_Titel

Satellite Communications - ECSC-3, 1993., 3rd European Conference on

Conference_Location

Manchester

Print_ISBN

0-85296-603-2

Type

conf

Filename

266082