Optimal demodulator for satellite-based wireless ATM networks

Author

Liang, Qilian

Author_Institution

Dept. of Electr. Eng., Texas Univ., Arlington, TX, USA

Volume

3

fYear

2003

fDate

11-15 May 2003

Firstpage

2104

Abstract

In this paper, we propose a Bayesian (known as optimal) demodulation scheme for satellite-based time-division-multiple-access (TDMA) wireless asynchronous transfer mode (ATM) networks. Rician flat fading is assumed for the satellite channel (no multipath). Because it is asynchronous between the transmission and receiver in wireless ATM networks, it is most important to focus on the demodulator design. The parameters for the Bayesian demodulator are determined using an unsupervised (blind) clustering method - fuzzy c-means (FCM). Our simulation results show that our demodulator performs better than the block phase estimation demodulator in terms of uncoded bit error rate (BER) with a gain of 0.2 to 0.3 dB.

Keywords

Bayes methods; Rician channels; asynchronous transfer mode; demodulation; satellite communication; time division multiple access; 0.2 to 0.3 dB; Bayesian demodulation scheme; Rician flat fading channel; fuzzy c-mean algorithm; optimal demodulator; satellite-based TDMA; time-division-multiple-access network; uncoded bit error rate; unsupervised data clustering; wireless asynchronous transfer mode; Asynchronous transfer mode; Bayesian methods; Bit error rate; Clustering methods; Demodulation; Fading; Phase estimation; Rician channels; Satellites; Time division multiple access;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, 2003. ICC '03. IEEE International Conference on

Print_ISBN

0-7803-7802-4

Type

conf

DOI

10.1109/ICC.2003.1204004

Filename

1204004