Performance of 4- and 8-state TCM schemes with asymmetric 8-PSK infading channels
Subramaniam, L.V.
Rajan, B.S.
Bahl, R.
Centr for Appl. Res. in Electron., Indian Inst. of Technol., Delhi;
This paper appears in: Vehicular Technology, IEEE Transactions on
Publication Date: Jan 2000
Volume: 49,
Issue: 1
On page(s): 211-219
ISSN: 0018-9545
References Cited: 13
CODEN: ITVTAB
INSPEC Accession Number: 6501339
Digital Object Identifier: 10.1109/25.820713
Current Version Published: 2002-08-06
Abstract
For Rayleigh fading channels, Ricean fading channels with a small
parameter and shadowed Rician channels with the code design criteria are
to maximize the effective length as well as the minimum product distance
of the code. In this paper, we use two different asymmetric 8-PSK signal
sets in 4-state and 8-state rate 2/3 trellis-coded modulation (TCM)
schemes and show performance gain over TCM schemes with symmetric 8-PSK
constellations. The performance gain is due to an increase in the
minimum product distance compared to that of the best known TCM schemes
of comparable states using symmetric 8-PSK signal sets while the
effective length remains same. Simulation is performed over the
Rayleigh, Ricean, and shadowed Rician fading channels to demonstrate the
performance gain of the asymmetric 8-PSK TCM schemes over the symmetric
8-PSK TCM
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